| 1 | /* $Id: TM.cpp 77284 2019-02-12 15:41:39Z vboxsync $ */
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| 2 | /** @file
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| 3 | * TM - Time Manager.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2019 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | /** @page pg_tm TM - The Time Manager
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| 19 | *
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| 20 | * The Time Manager abstracts the CPU clocks and manages timers used by the VMM,
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| 21 | * device and drivers.
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| 22 | *
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| 23 | * @see grp_tm
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| 24 | *
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| 25 | *
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| 26 | * @section sec_tm_clocks Clocks
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| 27 | *
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| 28 | * There are currently 4 clocks:
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| 29 | * - Virtual (guest).
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| 30 | * - Synchronous virtual (guest).
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| 31 | * - CPU Tick (TSC) (guest). Only current use is rdtsc emulation. Usually a
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| 32 | * function of the virtual clock.
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| 33 | * - Real (host). This is only used for display updates atm.
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| 34 | *
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| 35 | * The most important clocks are the three first ones and of these the second is
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| 36 | * the most interesting.
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| 37 | *
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| 38 | *
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| 39 | * The synchronous virtual clock is tied to the virtual clock except that it
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| 40 | * will take into account timer delivery lag caused by host scheduling. It will
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| 41 | * normally never advance beyond the head timer, and when lagging too far behind
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| 42 | * it will gradually speed up to catch up with the virtual clock. All devices
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| 43 | * implementing time sources accessible to and used by the guest is using this
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| 44 | * clock (for timers and other things). This ensures consistency between the
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| 45 | * time sources.
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| 46 | *
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| 47 | * The virtual clock is implemented as an offset to a monotonic, high
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| 48 | * resolution, wall clock. The current time source is using the RTTimeNanoTS()
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| 49 | * machinery based upon the Global Info Pages (GIP), that is, we're using TSC
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| 50 | * deltas (usually 10 ms) to fill the gaps between GIP updates. The result is
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| 51 | * a fairly high res clock that works in all contexts and on all hosts. The
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| 52 | * virtual clock is paused when the VM isn't in the running state.
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| 53 | *
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| 54 | * The CPU tick (TSC) is normally virtualized as a function of the synchronous
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| 55 | * virtual clock, where the frequency defaults to the host cpu frequency (as we
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| 56 | * measure it). In this mode it is possible to configure the frequency. Another
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| 57 | * (non-default) option is to use the raw unmodified host TSC values. And yet
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| 58 | * another, to tie it to time spent executing guest code. All these things are
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| 59 | * configurable should non-default behavior be desirable.
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| 60 | *
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| 61 | * The real clock is a monotonic clock (when available) with relatively low
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| 62 | * resolution, though this a bit host specific. Note that we're currently not
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| 63 | * servicing timers using the real clock when the VM is not running, this is
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| 64 | * simply because it has not been needed yet therefore not implemented.
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| 65 | *
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| 66 | *
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| 67 | * @subsection subsec_tm_timesync Guest Time Sync / UTC time
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| 68 | *
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| 69 | * Guest time syncing is primarily taken care of by the VMM device. The
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| 70 | * principle is very simple, the guest additions periodically asks the VMM
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| 71 | * device what the current UTC time is and makes adjustments accordingly.
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| 72 | *
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| 73 | * A complicating factor is that the synchronous virtual clock might be doing
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| 74 | * catchups and the guest perception is currently a little bit behind the world
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| 75 | * but it will (hopefully) be catching up soon as we're feeding timer interrupts
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| 76 | * at a slightly higher rate. Adjusting the guest clock to the current wall
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| 77 | * time in the real world would be a bad idea then because the guest will be
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| 78 | * advancing too fast and run ahead of world time (if the catchup works out).
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| 79 | * To solve this problem TM provides the VMM device with an UTC time source that
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| 80 | * gets adjusted with the current lag, so that when the guest eventually catches
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| 81 | * up the lag it will be showing correct real world time.
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| 82 | *
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| 83 | *
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| 84 | * @section sec_tm_timers Timers
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| 85 | *
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| 86 | * The timers can use any of the TM clocks described in the previous section.
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| 87 | * Each clock has its own scheduling facility, or timer queue if you like.
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| 88 | * There are a few factors which makes it a bit complex. First, there is the
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| 89 | * usual R0 vs R3 vs. RC thing. Then there are multiple threads, and then there
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| 90 | * is the timer thread that periodically checks whether any timers has expired
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| 91 | * without EMT noticing. On the API level, all but the create and save APIs
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| 92 | * must be multithreaded. EMT will always run the timers.
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| 93 | *
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| 94 | * The design is using a doubly linked list of active timers which is ordered
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| 95 | * by expire date. This list is only modified by the EMT thread. Updates to
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| 96 | * the list are batched in a singly linked list, which is then processed by the
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| 97 | * EMT thread at the first opportunity (immediately, next time EMT modifies a
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| 98 | * timer on that clock, or next timer timeout). Both lists are offset based and
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| 99 | * all the elements are therefore allocated from the hyper heap.
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| 100 | *
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| 101 | * For figuring out when there is need to schedule and run timers TM will:
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| 102 | * - Poll whenever somebody queries the virtual clock.
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| 103 | * - Poll the virtual clocks from the EM and REM loops.
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| 104 | * - Poll the virtual clocks from trap exit path.
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| 105 | * - Poll the virtual clocks and calculate first timeout from the halt loop.
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| 106 | * - Employ a thread which periodically (100Hz) polls all the timer queues.
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| 107 | *
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| 108 | *
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| 109 | * @image html TMTIMER-Statechart-Diagram.gif
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| 110 | *
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| 111 | * @section sec_tm_timer Logging
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| 112 | *
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| 113 | * Level 2: Logs a most of the timer state transitions and queue servicing.
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| 114 | * Level 3: Logs a few oddments.
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| 115 | * Level 4: Logs TMCLOCK_VIRTUAL_SYNC catch-up events.
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| 116 | *
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| 117 | */
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| 118 |
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| 119 |
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| 120 | /*********************************************************************************************************************************
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| 121 | * Header Files *
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| 122 | *********************************************************************************************************************************/
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| 123 | #define LOG_GROUP LOG_GROUP_TM
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| 124 | #ifdef DEBUG_bird
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| 125 | # define DBGFTRACE_DISABLED /* annoying */
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| 126 | #endif
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| 127 | #include <VBox/vmm/tm.h>
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| 128 | #include <iprt/asm-amd64-x86.h> /* for SUPGetCpuHzFromGip from sup.h */
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| 129 | #include <VBox/vmm/vmm.h>
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| 130 | #include <VBox/vmm/mm.h>
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| 131 | #include <VBox/vmm/hm.h>
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| 132 | #include <VBox/vmm/nem.h>
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| 133 | #include <VBox/vmm/gim.h>
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| 134 | #include <VBox/vmm/ssm.h>
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| 135 | #include <VBox/vmm/dbgf.h>
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| 136 | #include <VBox/vmm/dbgftrace.h>
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| 137 | #ifdef VBOX_WITH_REM
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| 138 | # include <VBox/vmm/rem.h>
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| 139 | #endif
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| 140 | #include <VBox/vmm/pdmapi.h>
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| 141 | #include <VBox/vmm/iom.h>
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| 142 | #include "TMInternal.h"
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| 143 | #include <VBox/vmm/vm.h>
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| 144 | #include <VBox/vmm/uvm.h>
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| 145 |
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| 146 | #include <VBox/vmm/pdmdev.h>
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| 147 | #include <VBox/param.h>
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| 148 | #include <VBox/err.h>
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| 149 |
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| 150 | #include <VBox/log.h>
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| 151 | #include <iprt/asm.h>
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| 152 | #include <iprt/asm-math.h>
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| 153 | #include <iprt/assert.h>
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| 154 | #include <iprt/file.h>
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| 155 | #include <iprt/thread.h>
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| 156 | #include <iprt/time.h>
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| 157 | #include <iprt/timer.h>
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| 158 | #include <iprt/semaphore.h>
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| 159 | #include <iprt/string.h>
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| 160 | #include <iprt/env.h>
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| 161 |
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| 162 | #include "TMInline.h"
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| 163 |
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| 164 |
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| 165 | /*********************************************************************************************************************************
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| 166 | * Defined Constants And Macros *
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| 167 | *********************************************************************************************************************************/
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| 168 | /** The current saved state version.*/
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| 169 | #define TM_SAVED_STATE_VERSION 3
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| 170 |
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| 171 |
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| 172 | /*********************************************************************************************************************************
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| 173 | * Internal Functions *
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| 174 | *********************************************************************************************************************************/
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| 175 | static bool tmR3HasFixedTSC(PVM pVM);
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| 176 | static uint64_t tmR3CalibrateTSC(void);
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| 177 | static DECLCALLBACK(int) tmR3Save(PVM pVM, PSSMHANDLE pSSM);
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| 178 | static DECLCALLBACK(int) tmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
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| 179 | static DECLCALLBACK(void) tmR3TimerCallback(PRTTIMER pTimer, void *pvUser, uint64_t iTick);
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| 180 | static void tmR3TimerQueueRun(PVM pVM, PTMTIMERQUEUE pQueue);
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| 181 | static void tmR3TimerQueueRunVirtualSync(PVM pVM);
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| 182 | static DECLCALLBACK(int) tmR3SetWarpDrive(PUVM pUVM, uint32_t u32Percent);
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| 183 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
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| 184 | static DECLCALLBACK(void) tmR3CpuLoadTimer(PVM pVM, PTMTIMER pTimer, void *pvUser);
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| 185 | #endif
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| 186 | static DECLCALLBACK(void) tmR3TimerInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
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| 187 | static DECLCALLBACK(void) tmR3TimerInfoActive(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
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| 188 | static DECLCALLBACK(void) tmR3InfoClocks(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
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| 189 | static DECLCALLBACK(VBOXSTRICTRC) tmR3CpuTickParavirtDisable(PVM pVM, PVMCPU pVCpu, void *pvData);
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| 190 | static const char * tmR3GetTSCModeName(PVM pVM);
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| 191 | static const char * tmR3GetTSCModeNameEx(TMTSCMODE enmMode);
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| 192 |
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| 193 |
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| 194 | /**
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| 195 | * Initializes the TM.
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| 196 | *
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| 197 | * @returns VBox status code.
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| 198 | * @param pVM The cross context VM structure.
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| 199 | */
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| 200 | VMM_INT_DECL(int) TMR3Init(PVM pVM)
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| 201 | {
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| 202 | LogFlow(("TMR3Init:\n"));
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| 203 |
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| 204 | /*
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| 205 | * Assert alignment and sizes.
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| 206 | */
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| 207 | AssertCompileMemberAlignment(VM, tm.s, 32);
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| 208 | AssertCompile(sizeof(pVM->tm.s) <= sizeof(pVM->tm.padding));
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| 209 | AssertCompileMemberAlignment(TM, TimerCritSect, 8);
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| 210 | AssertCompileMemberAlignment(TM, VirtualSyncLock, 8);
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| 211 |
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| 212 | /*
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| 213 | * Init the structure.
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| 214 | */
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| 215 | void *pv;
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| 216 | int rc = MMHyperAlloc(pVM, sizeof(pVM->tm.s.paTimerQueuesR3[0]) * TMCLOCK_MAX, 0, MM_TAG_TM, &pv);
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| 217 | AssertRCReturn(rc, rc);
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| 218 | pVM->tm.s.paTimerQueuesR3 = (PTMTIMERQUEUE)pv;
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| 219 | pVM->tm.s.paTimerQueuesR0 = MMHyperR3ToR0(pVM, pv);
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| 220 | pVM->tm.s.paTimerQueuesRC = MMHyperR3ToRC(pVM, pv);
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| 221 |
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| 222 | pVM->tm.s.offVM = RT_UOFFSETOF(VM, tm.s);
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| 223 | pVM->tm.s.idTimerCpu = pVM->cCpus - 1; /* The last CPU. */
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| 224 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL].enmClock = TMCLOCK_VIRTUAL;
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| 225 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL].u64Expire = INT64_MAX;
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| 226 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL_SYNC].enmClock = TMCLOCK_VIRTUAL_SYNC;
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| 227 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL_SYNC].u64Expire = INT64_MAX;
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| 228 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_REAL].enmClock = TMCLOCK_REAL;
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| 229 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_REAL].u64Expire = INT64_MAX;
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| 230 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_TSC].enmClock = TMCLOCK_TSC;
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| 231 | pVM->tm.s.paTimerQueuesR3[TMCLOCK_TSC].u64Expire = INT64_MAX;
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| 232 |
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| 233 |
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| 234 | /*
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| 235 | * We directly use the GIP to calculate the virtual time. We map the
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| 236 | * the GIP into the guest context so we can do this calculation there
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| 237 | * as well and save costly world switches.
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| 238 | */
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| 239 | PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
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| 240 | pVM->tm.s.pvGIPR3 = (void *)pGip;
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| 241 | AssertMsgReturn(pVM->tm.s.pvGIPR3, ("GIP support is now required!\n"), VERR_TM_GIP_REQUIRED);
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| 242 | AssertMsgReturn((pGip->u32Version >> 16) == (SUPGLOBALINFOPAGE_VERSION >> 16),
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| 243 | ("Unsupported GIP version %#x! (expected=%#x)\n", pGip->u32Version, SUPGLOBALINFOPAGE_VERSION),
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| 244 | VERR_TM_GIP_VERSION);
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| 245 |
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| 246 | RTHCPHYS HCPhysGIP;
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| 247 | rc = SUPR3GipGetPhys(&HCPhysGIP);
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| 248 | AssertMsgRCReturn(rc, ("Failed to get GIP physical address!\n"), rc);
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| 249 |
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| 250 | RTGCPTR GCPtr;
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| 251 | #ifdef SUP_WITH_LOTS_OF_CPUS
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| 252 | rc = MMR3HyperMapHCPhys(pVM, pVM->tm.s.pvGIPR3, NIL_RTR0PTR, HCPhysGIP, (size_t)pGip->cPages * PAGE_SIZE,
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| 253 | "GIP", &GCPtr);
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| 254 | #else
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| 255 | rc = MMR3HyperMapHCPhys(pVM, pVM->tm.s.pvGIPR3, NIL_RTR0PTR, HCPhysGIP, PAGE_SIZE, "GIP", &GCPtr);
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| 256 | #endif
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| 257 | if (RT_FAILURE(rc))
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| 258 | {
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| 259 | AssertMsgFailed(("Failed to map GIP into GC, rc=%Rrc!\n", rc));
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| 260 | return rc;
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| 261 | }
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| 262 | pVM->tm.s.pvGIPRC = GCPtr;
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| 263 | LogFlow(("TMR3Init: HCPhysGIP=%RHp at %RRv\n", HCPhysGIP, pVM->tm.s.pvGIPRC));
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| 264 | MMR3HyperReserve(pVM, PAGE_SIZE, "fence", NULL);
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| 265 |
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| 266 | /* Check assumptions made in TMAllVirtual.cpp about the GIP update interval. */
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| 267 | if ( pGip->u32Magic == SUPGLOBALINFOPAGE_MAGIC
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| 268 | && pGip->u32UpdateIntervalNS >= 250000000 /* 0.25s */)
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| 269 | return VMSetError(pVM, VERR_TM_GIP_UPDATE_INTERVAL_TOO_BIG, RT_SRC_POS,
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| 270 | N_("The GIP update interval is too big. u32UpdateIntervalNS=%RU32 (u32UpdateHz=%RU32)"),
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| 271 | pGip->u32UpdateIntervalNS, pGip->u32UpdateHz);
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| 272 |
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| 273 | /* Log GIP info that may come in handy. */
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| 274 | LogRel(("TM: GIP - u32Mode=%d (%s) u32UpdateHz=%u u32UpdateIntervalNS=%u enmUseTscDelta=%d (%s) fGetGipCpu=%#x cCpus=%d\n",
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| 275 | pGip->u32Mode, SUPGetGIPModeName(pGip), pGip->u32UpdateHz, pGip->u32UpdateIntervalNS,
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| 276 | pGip->enmUseTscDelta, SUPGetGIPTscDeltaModeName(pGip), pGip->fGetGipCpu, pGip->cCpus));
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| 277 | LogRel(("TM: GIP - u64CpuHz=%'RU64 (%#RX64) SUPGetCpuHzFromGip => %'RU64\n",
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| 278 | pGip->u64CpuHz, pGip->u64CpuHz, SUPGetCpuHzFromGip(pGip)));
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| 279 | for (uint32_t iCpuSet = 0; iCpuSet < RT_ELEMENTS(pGip->aiCpuFromCpuSetIdx); iCpuSet++)
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| 280 | {
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| 281 | uint16_t iGipCpu = pGip->aiCpuFromCpuSetIdx[iCpuSet];
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| 282 | if (iGipCpu != UINT16_MAX)
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| 283 | LogRel(("TM: GIP - CPU: iCpuSet=%#x idCpu=%#x idApic=%#x iGipCpu=%#x i64TSCDelta=%RI64 enmState=%d u64CpuHz=%RU64(*) cErrors=%u\n",
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| 284 | iCpuSet, pGip->aCPUs[iGipCpu].idCpu, pGip->aCPUs[iGipCpu].idApic, iGipCpu, pGip->aCPUs[iGipCpu].i64TSCDelta,
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| 285 | pGip->aCPUs[iGipCpu].enmState, pGip->aCPUs[iGipCpu].u64CpuHz, pGip->aCPUs[iGipCpu].cErrors));
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| 286 | }
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| 287 |
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| 288 | /*
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| 289 | * Setup the VirtualGetRaw backend.
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| 290 | */
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| 291 | pVM->tm.s.pfnVirtualGetRawR3 = tmVirtualNanoTSRediscover;
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| 292 | pVM->tm.s.VirtualGetRawDataR3.pfnRediscover = tmVirtualNanoTSRediscover;
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| 293 | pVM->tm.s.VirtualGetRawDataR3.pfnBad = tmVirtualNanoTSBad;
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| 294 | pVM->tm.s.VirtualGetRawDataR3.pfnBadCpuIndex = tmVirtualNanoTSBadCpuIndex;
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| 295 | pVM->tm.s.VirtualGetRawDataR3.pu64Prev = &pVM->tm.s.u64VirtualRawPrev;
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| 296 | pVM->tm.s.VirtualGetRawDataRC.pu64Prev = MMHyperR3ToRC(pVM, (void *)&pVM->tm.s.u64VirtualRawPrev);
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| 297 | pVM->tm.s.VirtualGetRawDataR0.pu64Prev = MMHyperR3ToR0(pVM, (void *)&pVM->tm.s.u64VirtualRawPrev);
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| 298 | AssertRelease(pVM->tm.s.VirtualGetRawDataR0.pu64Prev);
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| 299 | /* The rest is done in TMR3InitFinalize() since it's too early to call PDM. */
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| 300 |
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| 301 | /*
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| 302 | * Init the locks.
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| 303 | */
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| 304 | rc = PDMR3CritSectInit(pVM, &pVM->tm.s.TimerCritSect, RT_SRC_POS, "TM Timer Lock");
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| 305 | if (RT_FAILURE(rc))
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| 306 | return rc;
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| 307 | rc = PDMR3CritSectInit(pVM, &pVM->tm.s.VirtualSyncLock, RT_SRC_POS, "TM VirtualSync Lock");
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| 308 | if (RT_FAILURE(rc))
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| 309 | return rc;
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| 310 |
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| 311 | /*
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| 312 | * Get our CFGM node, create it if necessary.
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| 313 | */
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| 314 | PCFGMNODE pCfgHandle = CFGMR3GetChild(CFGMR3GetRoot(pVM), "TM");
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| 315 | if (!pCfgHandle)
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| 316 | {
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| 317 | rc = CFGMR3InsertNode(CFGMR3GetRoot(pVM), "TM", &pCfgHandle);
|
|---|
| 318 | AssertRCReturn(rc, rc);
|
|---|
| 319 | }
|
|---|
| 320 |
|
|---|
| 321 | /*
|
|---|
| 322 | * Specific errors about some obsolete TM settings (remove after 2015-12-03).
|
|---|
| 323 | */
|
|---|
| 324 | if (CFGMR3Exists(pCfgHandle, "TSCVirtualized"))
|
|---|
| 325 | return VMSetError(pVM, VERR_CFGM_CONFIG_UNKNOWN_VALUE, RT_SRC_POS,
|
|---|
| 326 | N_("Configuration error: TM setting \"TSCVirtualized\" is no longer supported. Use the \"TSCMode\" setting instead."));
|
|---|
| 327 | if (CFGMR3Exists(pCfgHandle, "UseRealTSC"))
|
|---|
| 328 | return VMSetError(pVM, VERR_CFGM_CONFIG_UNKNOWN_VALUE, RT_SRC_POS,
|
|---|
| 329 | N_("Configuration error: TM setting \"UseRealTSC\" is no longer supported. Use the \"TSCMode\" setting instead."));
|
|---|
| 330 |
|
|---|
| 331 | if (CFGMR3Exists(pCfgHandle, "MaybeUseOffsettedHostTSC"))
|
|---|
| 332 | return VMSetError(pVM, VERR_CFGM_CONFIG_UNKNOWN_VALUE, RT_SRC_POS,
|
|---|
| 333 | N_("Configuration error: TM setting \"MaybeUseOffsettedHostTSC\" is no longer supported. Use the \"TSCMode\" setting instead."));
|
|---|
| 334 |
|
|---|
| 335 | /*
|
|---|
| 336 | * Validate the rest of the TM settings.
|
|---|
| 337 | */
|
|---|
| 338 | rc = CFGMR3ValidateConfig(pCfgHandle, "/TM/",
|
|---|
| 339 | "TSCMode|"
|
|---|
| 340 | "TSCModeSwitchAllowed|"
|
|---|
| 341 | "TSCTicksPerSecond|"
|
|---|
| 342 | "TSCTiedToExecution|"
|
|---|
| 343 | "TSCNotTiedToHalt|"
|
|---|
| 344 | "ScheduleSlack|"
|
|---|
| 345 | "CatchUpStopThreshold|"
|
|---|
| 346 | "CatchUpGiveUpThreshold|"
|
|---|
| 347 | "CatchUpStartThreshold0|CatchUpStartThreshold1|CatchUpStartThreshold2|CatchUpStartThreshold3|"
|
|---|
| 348 | "CatchUpStartThreshold4|CatchUpStartThreshold5|CatchUpStartThreshold6|CatchUpStartThreshold7|"
|
|---|
| 349 | "CatchUpStartThreshold8|CatchUpStartThreshold9|"
|
|---|
| 350 | "CatchUpPrecentage0|CatchUpPrecentage1|CatchUpPrecentage2|CatchUpPrecentage3|"
|
|---|
| 351 | "CatchUpPrecentage4|CatchUpPrecentage5|CatchUpPrecentage6|CatchUpPrecentage7|"
|
|---|
| 352 | "CatchUpPrecentage8|CatchUpPrecentage9|"
|
|---|
| 353 | "UTCOffset|"
|
|---|
| 354 | "UTCTouchFileOnJump|"
|
|---|
| 355 | "WarpDrivePercentage|"
|
|---|
| 356 | "HostHzMax|"
|
|---|
| 357 | "HostHzFudgeFactorTimerCpu|"
|
|---|
| 358 | "HostHzFudgeFactorOtherCpu|"
|
|---|
| 359 | "HostHzFudgeFactorCatchUp100|"
|
|---|
| 360 | "HostHzFudgeFactorCatchUp200|"
|
|---|
| 361 | "HostHzFudgeFactorCatchUp400|"
|
|---|
| 362 | "TimerMillies"
|
|---|
| 363 | ,
|
|---|
| 364 | "",
|
|---|
| 365 | "TM", 0);
|
|---|
| 366 | if (RT_FAILURE(rc))
|
|---|
| 367 | return rc;
|
|---|
| 368 |
|
|---|
| 369 | /*
|
|---|
| 370 | * Determine the TSC configuration and frequency.
|
|---|
| 371 | */
|
|---|
| 372 | /** @cfgm{/TM/TSCMode, string, Depends on the CPU and VM config}
|
|---|
| 373 | * The name of the TSC mode to use: VirtTSCEmulated, RealTSCOffset or Dynamic.
|
|---|
| 374 | * The default depends on the VM configuration and the capabilities of the
|
|---|
| 375 | * host CPU. Other config options or runtime changes may override the TSC
|
|---|
| 376 | * mode specified here.
|
|---|
| 377 | */
|
|---|
| 378 | char szTSCMode[32];
|
|---|
| 379 | rc = CFGMR3QueryString(pCfgHandle, "TSCMode", szTSCMode, sizeof(szTSCMode));
|
|---|
| 380 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 381 | {
|
|---|
| 382 | /** @todo Rainy-day/never: Dynamic mode isn't currently suitable for SMP VMs, so
|
|---|
| 383 | * fall back on the more expensive emulated mode. With the current TSC handling
|
|---|
| 384 | * (frequent switching between offsetted mode and taking VM exits, on all VCPUs
|
|---|
| 385 | * without any kind of coordination) will lead to inconsistent TSC behavior with
|
|---|
| 386 | * guest SMP, including TSC going backwards. */
|
|---|
| 387 | pVM->tm.s.enmTSCMode = NEMR3NeedSpecialTscMode(pVM) ? TMTSCMODE_NATIVE_API
|
|---|
| 388 | : pVM->cCpus == 1 && tmR3HasFixedTSC(pVM) ? TMTSCMODE_DYNAMIC : TMTSCMODE_VIRT_TSC_EMULATED;
|
|---|
| 389 | }
|
|---|
| 390 | else if (RT_FAILURE(rc))
|
|---|
| 391 | return VMSetError(pVM, rc, RT_SRC_POS, N_("Configuration error: Failed to querying string value \"TSCMode\""));
|
|---|
| 392 | else
|
|---|
| 393 | {
|
|---|
| 394 | if (!RTStrCmp(szTSCMode, "VirtTSCEmulated"))
|
|---|
| 395 | pVM->tm.s.enmTSCMode = TMTSCMODE_VIRT_TSC_EMULATED;
|
|---|
| 396 | else if (!RTStrCmp(szTSCMode, "RealTSCOffset"))
|
|---|
| 397 | pVM->tm.s.enmTSCMode = TMTSCMODE_REAL_TSC_OFFSET;
|
|---|
| 398 | else if (!RTStrCmp(szTSCMode, "Dynamic"))
|
|---|
| 399 | pVM->tm.s.enmTSCMode = TMTSCMODE_DYNAMIC;
|
|---|
| 400 | else
|
|---|
| 401 | return VMSetError(pVM, rc, RT_SRC_POS, N_("Configuration error: Unrecognized TM TSC mode value \"%s\""), szTSCMode);
|
|---|
| 402 | if (NEMR3NeedSpecialTscMode(pVM))
|
|---|
| 403 | {
|
|---|
| 404 | LogRel(("TM: NEM overrides the /TM/TSCMode=%s settings.\n", szTSCMode));
|
|---|
| 405 | pVM->tm.s.enmTSCMode = TMTSCMODE_NATIVE_API;
|
|---|
| 406 | }
|
|---|
| 407 | }
|
|---|
| 408 |
|
|---|
| 409 | /**
|
|---|
| 410 | * @cfgm{/TM/TSCModeSwitchAllowed, bool, Whether TM TSC mode switch is allowed
|
|---|
| 411 | * at runtime}
|
|---|
| 412 | * When using paravirtualized guests, we dynamically switch TSC modes to a more
|
|---|
| 413 | * optimal one for performance. This setting allows overriding this behaviour.
|
|---|
| 414 | */
|
|---|
| 415 | rc = CFGMR3QueryBool(pCfgHandle, "TSCModeSwitchAllowed", &pVM->tm.s.fTSCModeSwitchAllowed);
|
|---|
| 416 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 417 | {
|
|---|
| 418 | /* This is finally determined in TMR3InitFinalize() as GIM isn't initialized yet. */
|
|---|
| 419 | pVM->tm.s.fTSCModeSwitchAllowed = true;
|
|---|
| 420 | }
|
|---|
| 421 | else if (RT_FAILURE(rc))
|
|---|
| 422 | return VMSetError(pVM, rc, RT_SRC_POS, N_("Configuration error: Failed to querying bool value \"TSCModeSwitchAllowed\""));
|
|---|
| 423 | if (pVM->tm.s.fTSCModeSwitchAllowed && pVM->tm.s.enmTSCMode == TMTSCMODE_NATIVE_API)
|
|---|
| 424 | {
|
|---|
| 425 | LogRel(("TM: NEM overrides the /TM/TSCModeSwitchAllowed setting.\n"));
|
|---|
| 426 | pVM->tm.s.fTSCModeSwitchAllowed = false;
|
|---|
| 427 | }
|
|---|
| 428 |
|
|---|
| 429 | /** @cfgm{/TM/TSCTicksPerSecond, uint32_t, Current TSC frequency from GIP}
|
|---|
| 430 | * The number of TSC ticks per second (i.e. the TSC frequency). This will
|
|---|
| 431 | * override enmTSCMode.
|
|---|
| 432 | */
|
|---|
| 433 | rc = CFGMR3QueryU64(pCfgHandle, "TSCTicksPerSecond", &pVM->tm.s.cTSCTicksPerSecond);
|
|---|
| 434 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 435 | {
|
|---|
| 436 | pVM->tm.s.cTSCTicksPerSecond = tmR3CalibrateTSC();
|
|---|
| 437 | if ( ( pVM->tm.s.enmTSCMode == TMTSCMODE_DYNAMIC
|
|---|
| 438 | || pVM->tm.s.enmTSCMode == TMTSCMODE_VIRT_TSC_EMULATED)
|
|---|
| 439 | && pVM->tm.s.cTSCTicksPerSecond >= _4G)
|
|---|
| 440 | {
|
|---|
| 441 | pVM->tm.s.cTSCTicksPerSecond = _4G - 1; /* (A limitation of our math code) */
|
|---|
| 442 | pVM->tm.s.enmTSCMode = TMTSCMODE_VIRT_TSC_EMULATED;
|
|---|
| 443 | }
|
|---|
| 444 | }
|
|---|
| 445 | else if (RT_FAILURE(rc))
|
|---|
| 446 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 447 | N_("Configuration error: Failed to querying uint64_t value \"TSCTicksPerSecond\""));
|
|---|
| 448 | else if ( pVM->tm.s.cTSCTicksPerSecond < _1M
|
|---|
| 449 | || pVM->tm.s.cTSCTicksPerSecond >= _4G)
|
|---|
| 450 | return VMSetError(pVM, VERR_INVALID_PARAMETER, RT_SRC_POS,
|
|---|
| 451 | N_("Configuration error: \"TSCTicksPerSecond\" = %RI64 is not in the range 1MHz..4GHz-1"),
|
|---|
| 452 | pVM->tm.s.cTSCTicksPerSecond);
|
|---|
| 453 | else if (pVM->tm.s.enmTSCMode != TMTSCMODE_NATIVE_API)
|
|---|
| 454 | pVM->tm.s.enmTSCMode = TMTSCMODE_VIRT_TSC_EMULATED;
|
|---|
| 455 | else
|
|---|
| 456 | {
|
|---|
| 457 | LogRel(("TM: NEM overrides the /TM/TSCTicksPerSecond=%RU64 setting.\n", pVM->tm.s.cTSCTicksPerSecond));
|
|---|
| 458 | pVM->tm.s.cTSCTicksPerSecond = tmR3CalibrateTSC();
|
|---|
| 459 | }
|
|---|
| 460 |
|
|---|
| 461 | /** @cfgm{/TM/TSCTiedToExecution, bool, false}
|
|---|
| 462 | * Whether the TSC should be tied to execution. This will exclude most of the
|
|---|
| 463 | * virtualization overhead, but will by default include the time spent in the
|
|---|
| 464 | * halt state (see TM/TSCNotTiedToHalt). This setting will override all other
|
|---|
| 465 | * TSC settings except for TSCTicksPerSecond and TSCNotTiedToHalt, which should
|
|---|
| 466 | * be used avoided or used with great care. Note that this will only work right
|
|---|
| 467 | * together with VT-x or AMD-V, and with a single virtual CPU. */
|
|---|
| 468 | rc = CFGMR3QueryBoolDef(pCfgHandle, "TSCTiedToExecution", &pVM->tm.s.fTSCTiedToExecution, false);
|
|---|
| 469 | if (RT_FAILURE(rc))
|
|---|
| 470 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 471 | N_("Configuration error: Failed to querying bool value \"TSCTiedToExecution\""));
|
|---|
| 472 | if (pVM->tm.s.fTSCTiedToExecution && pVM->tm.s.enmTSCMode == TMTSCMODE_NATIVE_API)
|
|---|
| 473 | return VMSetError(pVM, VERR_INVALID_PARAMETER, RT_SRC_POS, N_("/TM/TSCTiedToExecution is not supported in NEM mode!"));
|
|---|
| 474 | if (pVM->tm.s.fTSCTiedToExecution)
|
|---|
| 475 | pVM->tm.s.enmTSCMode = TMTSCMODE_VIRT_TSC_EMULATED;
|
|---|
| 476 |
|
|---|
| 477 |
|
|---|
| 478 | /** @cfgm{/TM/TSCNotTiedToHalt, bool, false}
|
|---|
| 479 | * This is used with /TM/TSCTiedToExecution to control how TSC operates
|
|---|
| 480 | * accross HLT instructions. When true HLT is considered execution time and
|
|---|
| 481 | * TSC continues to run, while when false (default) TSC stops during halt. */
|
|---|
| 482 | rc = CFGMR3QueryBoolDef(pCfgHandle, "TSCNotTiedToHalt", &pVM->tm.s.fTSCNotTiedToHalt, false);
|
|---|
| 483 | if (RT_FAILURE(rc))
|
|---|
| 484 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 485 | N_("Configuration error: Failed to querying bool value \"TSCNotTiedToHalt\""));
|
|---|
| 486 |
|
|---|
| 487 | /*
|
|---|
| 488 | * Configure the timer synchronous virtual time.
|
|---|
| 489 | */
|
|---|
| 490 | /** @cfgm{/TM/ScheduleSlack, uint32_t, ns, 0, UINT32_MAX, 100000}
|
|---|
| 491 | * Scheduling slack when processing timers. */
|
|---|
| 492 | rc = CFGMR3QueryU32(pCfgHandle, "ScheduleSlack", &pVM->tm.s.u32VirtualSyncScheduleSlack);
|
|---|
| 493 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 494 | pVM->tm.s.u32VirtualSyncScheduleSlack = 100000; /* 0.100ms (ASSUMES virtual time is nanoseconds) */
|
|---|
| 495 | else if (RT_FAILURE(rc))
|
|---|
| 496 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 497 | N_("Configuration error: Failed to querying 32-bit integer value \"ScheduleSlack\""));
|
|---|
| 498 |
|
|---|
| 499 | /** @cfgm{/TM/CatchUpStopThreshold, uint64_t, ns, 0, UINT64_MAX, 500000}
|
|---|
| 500 | * When to stop a catch-up, considering it successful. */
|
|---|
| 501 | rc = CFGMR3QueryU64(pCfgHandle, "CatchUpStopThreshold", &pVM->tm.s.u64VirtualSyncCatchUpStopThreshold);
|
|---|
| 502 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 503 | pVM->tm.s.u64VirtualSyncCatchUpStopThreshold = 500000; /* 0.5ms */
|
|---|
| 504 | else if (RT_FAILURE(rc))
|
|---|
| 505 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 506 | N_("Configuration error: Failed to querying 64-bit integer value \"CatchUpStopThreshold\""));
|
|---|
| 507 |
|
|---|
| 508 | /** @cfgm{/TM/CatchUpGiveUpThreshold, uint64_t, ns, 0, UINT64_MAX, 60000000000}
|
|---|
| 509 | * When to give up a catch-up attempt. */
|
|---|
| 510 | rc = CFGMR3QueryU64(pCfgHandle, "CatchUpGiveUpThreshold", &pVM->tm.s.u64VirtualSyncCatchUpGiveUpThreshold);
|
|---|
| 511 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 512 | pVM->tm.s.u64VirtualSyncCatchUpGiveUpThreshold = UINT64_C(60000000000); /* 60 sec */
|
|---|
| 513 | else if (RT_FAILURE(rc))
|
|---|
| 514 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 515 | N_("Configuration error: Failed to querying 64-bit integer value \"CatchUpGiveUpThreshold\""));
|
|---|
| 516 |
|
|---|
| 517 |
|
|---|
| 518 | /** @cfgm{/TM/CatchUpPrecentage[0..9], uint32_t, %, 1, 2000, various}
|
|---|
| 519 | * The catch-up percent for a given period. */
|
|---|
| 520 | /** @cfgm{/TM/CatchUpStartThreshold[0..9], uint64_t, ns, 0, UINT64_MAX}
|
|---|
| 521 | * The catch-up period threshold, or if you like, when a period starts. */
|
|---|
| 522 | #define TM_CFG_PERIOD(iPeriod, DefStart, DefPct) \
|
|---|
| 523 | do \
|
|---|
| 524 | { \
|
|---|
| 525 | uint64_t u64; \
|
|---|
| 526 | rc = CFGMR3QueryU64(pCfgHandle, "CatchUpStartThreshold" #iPeriod, &u64); \
|
|---|
| 527 | if (rc == VERR_CFGM_VALUE_NOT_FOUND) \
|
|---|
| 528 | u64 = UINT64_C(DefStart); \
|
|---|
| 529 | else if (RT_FAILURE(rc)) \
|
|---|
| 530 | return VMSetError(pVM, rc, RT_SRC_POS, N_("Configuration error: Failed to querying 64-bit integer value \"CatchUpThreshold" #iPeriod "\"")); \
|
|---|
| 531 | if ( (iPeriod > 0 && u64 <= pVM->tm.s.aVirtualSyncCatchUpPeriods[iPeriod - 1].u64Start) \
|
|---|
| 532 | || u64 >= pVM->tm.s.u64VirtualSyncCatchUpGiveUpThreshold) \
|
|---|
| 533 | return VMSetError(pVM, VERR_INVALID_PARAMETER, RT_SRC_POS, N_("Configuration error: Invalid start of period #" #iPeriod ": %'RU64"), u64); \
|
|---|
| 534 | pVM->tm.s.aVirtualSyncCatchUpPeriods[iPeriod].u64Start = u64; \
|
|---|
| 535 | rc = CFGMR3QueryU32(pCfgHandle, "CatchUpPrecentage" #iPeriod, &pVM->tm.s.aVirtualSyncCatchUpPeriods[iPeriod].u32Percentage); \
|
|---|
| 536 | if (rc == VERR_CFGM_VALUE_NOT_FOUND) \
|
|---|
| 537 | pVM->tm.s.aVirtualSyncCatchUpPeriods[iPeriod].u32Percentage = (DefPct); \
|
|---|
| 538 | else if (RT_FAILURE(rc)) \
|
|---|
| 539 | return VMSetError(pVM, rc, RT_SRC_POS, N_("Configuration error: Failed to querying 32-bit integer value \"CatchUpPrecentage" #iPeriod "\"")); \
|
|---|
| 540 | } while (0)
|
|---|
| 541 | /* This needs more tuning. Not sure if we really need so many period and be so gentle. */
|
|---|
| 542 | TM_CFG_PERIOD(0, 750000, 5); /* 0.75ms at 1.05x */
|
|---|
| 543 | TM_CFG_PERIOD(1, 1500000, 10); /* 1.50ms at 1.10x */
|
|---|
| 544 | TM_CFG_PERIOD(2, 8000000, 25); /* 8ms at 1.25x */
|
|---|
| 545 | TM_CFG_PERIOD(3, 30000000, 50); /* 30ms at 1.50x */
|
|---|
| 546 | TM_CFG_PERIOD(4, 75000000, 75); /* 75ms at 1.75x */
|
|---|
| 547 | TM_CFG_PERIOD(5, 175000000, 100); /* 175ms at 2x */
|
|---|
| 548 | TM_CFG_PERIOD(6, 500000000, 200); /* 500ms at 3x */
|
|---|
| 549 | TM_CFG_PERIOD(7, 3000000000, 300); /* 3s at 4x */
|
|---|
| 550 | TM_CFG_PERIOD(8,30000000000, 400); /* 30s at 5x */
|
|---|
| 551 | TM_CFG_PERIOD(9,55000000000, 500); /* 55s at 6x */
|
|---|
| 552 | AssertCompile(RT_ELEMENTS(pVM->tm.s.aVirtualSyncCatchUpPeriods) == 10);
|
|---|
| 553 | #undef TM_CFG_PERIOD
|
|---|
| 554 |
|
|---|
| 555 | /*
|
|---|
| 556 | * Configure real world time (UTC).
|
|---|
| 557 | */
|
|---|
| 558 | /** @cfgm{/TM/UTCOffset, int64_t, ns, INT64_MIN, INT64_MAX, 0}
|
|---|
| 559 | * The UTC offset. This is used to put the guest back or forwards in time. */
|
|---|
| 560 | rc = CFGMR3QueryS64(pCfgHandle, "UTCOffset", &pVM->tm.s.offUTC);
|
|---|
| 561 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 562 | pVM->tm.s.offUTC = 0; /* ns */
|
|---|
| 563 | else if (RT_FAILURE(rc))
|
|---|
| 564 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 565 | N_("Configuration error: Failed to querying 64-bit integer value \"UTCOffset\""));
|
|---|
| 566 |
|
|---|
| 567 | /** @cfgm{/TM/UTCTouchFileOnJump, string, none}
|
|---|
| 568 | * File to be written to everytime the host time jumps. */
|
|---|
| 569 | rc = CFGMR3QueryStringAlloc(pCfgHandle, "UTCTouchFileOnJump", &pVM->tm.s.pszUtcTouchFileOnJump);
|
|---|
| 570 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 571 | pVM->tm.s.pszUtcTouchFileOnJump = NULL;
|
|---|
| 572 | else if (RT_FAILURE(rc))
|
|---|
| 573 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 574 | N_("Configuration error: Failed to querying string value \"UTCTouchFileOnJump\""));
|
|---|
| 575 |
|
|---|
| 576 | /*
|
|---|
| 577 | * Setup the warp drive.
|
|---|
| 578 | */
|
|---|
| 579 | /** @cfgm{/TM/WarpDrivePercentage, uint32_t, %, 0, 20000, 100}
|
|---|
| 580 | * The warp drive percentage, 100% is normal speed. This is used to speed up
|
|---|
| 581 | * or slow down the virtual clock, which can be useful for fast forwarding
|
|---|
| 582 | * borring periods during tests. */
|
|---|
| 583 | rc = CFGMR3QueryU32(pCfgHandle, "WarpDrivePercentage", &pVM->tm.s.u32VirtualWarpDrivePercentage);
|
|---|
| 584 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 585 | rc = CFGMR3QueryU32(CFGMR3GetRoot(pVM), "WarpDrivePercentage", &pVM->tm.s.u32VirtualWarpDrivePercentage); /* legacy */
|
|---|
| 586 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 587 | pVM->tm.s.u32VirtualWarpDrivePercentage = 100;
|
|---|
| 588 | else if (RT_FAILURE(rc))
|
|---|
| 589 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 590 | N_("Configuration error: Failed to querying uint32_t value \"WarpDrivePercent\""));
|
|---|
| 591 | else if ( pVM->tm.s.u32VirtualWarpDrivePercentage < 2
|
|---|
| 592 | || pVM->tm.s.u32VirtualWarpDrivePercentage > 20000)
|
|---|
| 593 | return VMSetError(pVM, VERR_INVALID_PARAMETER, RT_SRC_POS,
|
|---|
| 594 | N_("Configuration error: \"WarpDrivePercent\" = %RI32 is not in the range 2..20000"),
|
|---|
| 595 | pVM->tm.s.u32VirtualWarpDrivePercentage);
|
|---|
| 596 | pVM->tm.s.fVirtualWarpDrive = pVM->tm.s.u32VirtualWarpDrivePercentage != 100;
|
|---|
| 597 | if (pVM->tm.s.fVirtualWarpDrive)
|
|---|
| 598 | {
|
|---|
| 599 | if (pVM->tm.s.enmTSCMode == TMTSCMODE_NATIVE_API)
|
|---|
| 600 | LogRel(("TM: Warp-drive active, escept for TSC which is in NEM mode. u32VirtualWarpDrivePercentage=%RI32\n",
|
|---|
| 601 | pVM->tm.s.u32VirtualWarpDrivePercentage));
|
|---|
| 602 | else
|
|---|
| 603 | {
|
|---|
| 604 | pVM->tm.s.enmTSCMode = TMTSCMODE_VIRT_TSC_EMULATED;
|
|---|
| 605 | LogRel(("TM: Warp-drive active. u32VirtualWarpDrivePercentage=%RI32\n", pVM->tm.s.u32VirtualWarpDrivePercentage));
|
|---|
| 606 | }
|
|---|
| 607 | }
|
|---|
| 608 |
|
|---|
| 609 | /*
|
|---|
| 610 | * Gather the Host Hz configuration values.
|
|---|
| 611 | */
|
|---|
| 612 | rc = CFGMR3QueryU32Def(pCfgHandle, "HostHzMax", &pVM->tm.s.cHostHzMax, 20000);
|
|---|
| 613 | if (RT_FAILURE(rc))
|
|---|
| 614 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 615 | N_("Configuration error: Failed to querying uint32_t value \"HostHzMax\""));
|
|---|
| 616 |
|
|---|
| 617 | rc = CFGMR3QueryU32Def(pCfgHandle, "HostHzFudgeFactorTimerCpu", &pVM->tm.s.cPctHostHzFudgeFactorTimerCpu, 111);
|
|---|
| 618 | if (RT_FAILURE(rc))
|
|---|
| 619 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 620 | N_("Configuration error: Failed to querying uint32_t value \"HostHzFudgeFactorTimerCpu\""));
|
|---|
| 621 |
|
|---|
| 622 | rc = CFGMR3QueryU32Def(pCfgHandle, "HostHzFudgeFactorOtherCpu", &pVM->tm.s.cPctHostHzFudgeFactorOtherCpu, 110);
|
|---|
| 623 | if (RT_FAILURE(rc))
|
|---|
| 624 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 625 | N_("Configuration error: Failed to querying uint32_t value \"HostHzFudgeFactorOtherCpu\""));
|
|---|
| 626 |
|
|---|
| 627 | rc = CFGMR3QueryU32Def(pCfgHandle, "HostHzFudgeFactorCatchUp100", &pVM->tm.s.cPctHostHzFudgeFactorCatchUp100, 300);
|
|---|
| 628 | if (RT_FAILURE(rc))
|
|---|
| 629 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 630 | N_("Configuration error: Failed to querying uint32_t value \"HostHzFudgeFactorCatchUp100\""));
|
|---|
| 631 |
|
|---|
| 632 | rc = CFGMR3QueryU32Def(pCfgHandle, "HostHzFudgeFactorCatchUp200", &pVM->tm.s.cPctHostHzFudgeFactorCatchUp200, 250);
|
|---|
| 633 | if (RT_FAILURE(rc))
|
|---|
| 634 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 635 | N_("Configuration error: Failed to querying uint32_t value \"HostHzFudgeFactorCatchUp200\""));
|
|---|
| 636 |
|
|---|
| 637 | rc = CFGMR3QueryU32Def(pCfgHandle, "HostHzFudgeFactorCatchUp400", &pVM->tm.s.cPctHostHzFudgeFactorCatchUp400, 200);
|
|---|
| 638 | if (RT_FAILURE(rc))
|
|---|
| 639 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 640 | N_("Configuration error: Failed to querying uint32_t value \"HostHzFudgeFactorCatchUp400\""));
|
|---|
| 641 |
|
|---|
| 642 | /*
|
|---|
| 643 | * Finally, setup and report.
|
|---|
| 644 | */
|
|---|
| 645 | pVM->tm.s.enmOriginalTSCMode = pVM->tm.s.enmTSCMode;
|
|---|
| 646 | CPUMR3SetCR4Feature(pVM, X86_CR4_TSD, ~X86_CR4_TSD);
|
|---|
| 647 | LogRel(("TM: cTSCTicksPerSecond=%'RU64 (%#RX64) enmTSCMode=%d (%s)\n"
|
|---|
| 648 | "TM: TSCTiedToExecution=%RTbool TSCNotTiedToHalt=%RTbool\n",
|
|---|
| 649 | pVM->tm.s.cTSCTicksPerSecond, pVM->tm.s.cTSCTicksPerSecond, pVM->tm.s.enmTSCMode, tmR3GetTSCModeName(pVM),
|
|---|
| 650 | pVM->tm.s.fTSCTiedToExecution, pVM->tm.s.fTSCNotTiedToHalt));
|
|---|
| 651 |
|
|---|
| 652 | /*
|
|---|
| 653 | * Start the timer (guard against REM not yielding).
|
|---|
| 654 | */
|
|---|
| 655 | /** @cfgm{/TM/TimerMillies, uint32_t, ms, 1, 1000, 10}
|
|---|
| 656 | * The watchdog timer interval. */
|
|---|
| 657 | uint32_t u32Millies;
|
|---|
| 658 | rc = CFGMR3QueryU32(pCfgHandle, "TimerMillies", &u32Millies);
|
|---|
| 659 | if (rc == VERR_CFGM_VALUE_NOT_FOUND)
|
|---|
| 660 | u32Millies = VM_IS_HM_ENABLED(pVM) ? 1000 : 10;
|
|---|
| 661 | else if (RT_FAILURE(rc))
|
|---|
| 662 | return VMSetError(pVM, rc, RT_SRC_POS,
|
|---|
| 663 | N_("Configuration error: Failed to query uint32_t value \"TimerMillies\""));
|
|---|
| 664 | rc = RTTimerCreate(&pVM->tm.s.pTimer, u32Millies, tmR3TimerCallback, pVM);
|
|---|
| 665 | if (RT_FAILURE(rc))
|
|---|
| 666 | {
|
|---|
| 667 | AssertMsgFailed(("Failed to create timer, u32Millies=%d rc=%Rrc.\n", u32Millies, rc));
|
|---|
| 668 | return rc;
|
|---|
| 669 | }
|
|---|
| 670 | Log(("TM: Created timer %p firing every %d milliseconds\n", pVM->tm.s.pTimer, u32Millies));
|
|---|
| 671 | pVM->tm.s.u32TimerMillies = u32Millies;
|
|---|
| 672 |
|
|---|
| 673 | /*
|
|---|
| 674 | * Register saved state.
|
|---|
| 675 | */
|
|---|
| 676 | rc = SSMR3RegisterInternal(pVM, "tm", 1, TM_SAVED_STATE_VERSION, sizeof(uint64_t) * 8,
|
|---|
| 677 | NULL, NULL, NULL,
|
|---|
| 678 | NULL, tmR3Save, NULL,
|
|---|
| 679 | NULL, tmR3Load, NULL);
|
|---|
| 680 | if (RT_FAILURE(rc))
|
|---|
| 681 | return rc;
|
|---|
| 682 |
|
|---|
| 683 | /*
|
|---|
| 684 | * Register statistics.
|
|---|
| 685 | */
|
|---|
| 686 | STAM_REL_REG_USED(pVM,(void*)&pVM->tm.s.VirtualGetRawDataR3.c1nsSteps,STAMTYPE_U32, "/TM/R3/1nsSteps", STAMUNIT_OCCURENCES, "Virtual time 1ns steps (due to TSC / GIP variations).");
|
|---|
| 687 | STAM_REL_REG_USED(pVM,(void*)&pVM->tm.s.VirtualGetRawDataR3.cBadPrev, STAMTYPE_U32, "/TM/R3/cBadPrev", STAMUNIT_OCCURENCES, "Times the previous virtual time was considered erratic (shouldn't ever happen).");
|
|---|
| 688 | STAM_REL_REG_USED(pVM,(void*)&pVM->tm.s.VirtualGetRawDataR0.c1nsSteps,STAMTYPE_U32, "/TM/R0/1nsSteps", STAMUNIT_OCCURENCES, "Virtual time 1ns steps (due to TSC / GIP variations).");
|
|---|
| 689 | STAM_REL_REG_USED(pVM,(void*)&pVM->tm.s.VirtualGetRawDataR0.cBadPrev, STAMTYPE_U32, "/TM/R0/cBadPrev", STAMUNIT_OCCURENCES, "Times the previous virtual time was considered erratic (shouldn't ever happen).");
|
|---|
| 690 | STAM_REL_REG_USED(pVM,(void*)&pVM->tm.s.VirtualGetRawDataRC.c1nsSteps,STAMTYPE_U32, "/TM/RC/1nsSteps", STAMUNIT_OCCURENCES, "Virtual time 1ns steps (due to TSC / GIP variations).");
|
|---|
| 691 | STAM_REL_REG_USED(pVM,(void*)&pVM->tm.s.VirtualGetRawDataRC.cBadPrev, STAMTYPE_U32, "/TM/RC/cBadPrev", STAMUNIT_OCCURENCES, "Times the previous virtual time was considered erratic (shouldn't ever happen).");
|
|---|
| 692 | STAM_REL_REG( pVM,(void*)&pVM->tm.s.offVirtualSync, STAMTYPE_U64, "/TM/VirtualSync/CurrentOffset", STAMUNIT_NS, "The current offset. (subtract GivenUp to get the lag)");
|
|---|
| 693 | STAM_REL_REG_USED(pVM,(void*)&pVM->tm.s.offVirtualSyncGivenUp, STAMTYPE_U64, "/TM/VirtualSync/GivenUp", STAMUNIT_NS, "Nanoseconds of the 'CurrentOffset' that's been given up and won't ever be attempted caught up with.");
|
|---|
| 694 | STAM_REL_REG( pVM,(void*)&pVM->tm.s.uMaxHzHint, STAMTYPE_U32, "/TM/MaxHzHint", STAMUNIT_HZ, "Max guest timer frequency hint.");
|
|---|
| 695 |
|
|---|
| 696 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 697 | STAM_REG_USED(pVM,(void *)&pVM->tm.s.VirtualGetRawDataR3.cExpired, STAMTYPE_U32, "/TM/R3/cExpired", STAMUNIT_OCCURENCES, "Times the TSC interval expired (overlaps 1ns steps).");
|
|---|
| 698 | STAM_REG_USED(pVM,(void *)&pVM->tm.s.VirtualGetRawDataR3.cUpdateRaces,STAMTYPE_U32, "/TM/R3/cUpdateRaces", STAMUNIT_OCCURENCES, "Thread races when updating the previous timestamp.");
|
|---|
| 699 | STAM_REG_USED(pVM,(void *)&pVM->tm.s.VirtualGetRawDataR0.cExpired, STAMTYPE_U32, "/TM/R0/cExpired", STAMUNIT_OCCURENCES, "Times the TSC interval expired (overlaps 1ns steps).");
|
|---|
| 700 | STAM_REG_USED(pVM,(void *)&pVM->tm.s.VirtualGetRawDataR0.cUpdateRaces,STAMTYPE_U32, "/TM/R0/cUpdateRaces", STAMUNIT_OCCURENCES, "Thread races when updating the previous timestamp.");
|
|---|
| 701 | STAM_REG_USED(pVM,(void *)&pVM->tm.s.VirtualGetRawDataRC.cExpired, STAMTYPE_U32, "/TM/RC/cExpired", STAMUNIT_OCCURENCES, "Times the TSC interval expired (overlaps 1ns steps).");
|
|---|
| 702 | STAM_REG_USED(pVM,(void *)&pVM->tm.s.VirtualGetRawDataRC.cUpdateRaces,STAMTYPE_U32, "/TM/RC/cUpdateRaces", STAMUNIT_OCCURENCES, "Thread races when updating the previous timestamp.");
|
|---|
| 703 | STAM_REG(pVM, &pVM->tm.s.StatDoQueues, STAMTYPE_PROFILE, "/TM/DoQueues", STAMUNIT_TICKS_PER_CALL, "Profiling timer TMR3TimerQueuesDo.");
|
|---|
| 704 | STAM_REG(pVM, &pVM->tm.s.aStatDoQueues[TMCLOCK_VIRTUAL], STAMTYPE_PROFILE_ADV, "/TM/DoQueues/Virtual", STAMUNIT_TICKS_PER_CALL, "Time spent on the virtual clock queue.");
|
|---|
| 705 | STAM_REG(pVM, &pVM->tm.s.aStatDoQueues[TMCLOCK_VIRTUAL_SYNC], STAMTYPE_PROFILE_ADV, "/TM/DoQueues/VirtualSync", STAMUNIT_TICKS_PER_CALL, "Time spent on the virtual sync clock queue.");
|
|---|
| 706 | STAM_REG(pVM, &pVM->tm.s.aStatDoQueues[TMCLOCK_REAL], STAMTYPE_PROFILE_ADV, "/TM/DoQueues/Real", STAMUNIT_TICKS_PER_CALL, "Time spent on the real clock queue.");
|
|---|
| 707 |
|
|---|
| 708 | STAM_REG(pVM, &pVM->tm.s.StatPoll, STAMTYPE_COUNTER, "/TM/Poll", STAMUNIT_OCCURENCES, "TMTimerPoll calls.");
|
|---|
| 709 | STAM_REG(pVM, &pVM->tm.s.StatPollAlreadySet, STAMTYPE_COUNTER, "/TM/Poll/AlreadySet", STAMUNIT_OCCURENCES, "TMTimerPoll calls where the FF was already set.");
|
|---|
| 710 | STAM_REG(pVM, &pVM->tm.s.StatPollELoop, STAMTYPE_COUNTER, "/TM/Poll/ELoop", STAMUNIT_OCCURENCES, "Times TMTimerPoll has given up getting a consistent virtual sync data set.");
|
|---|
| 711 | STAM_REG(pVM, &pVM->tm.s.StatPollMiss, STAMTYPE_COUNTER, "/TM/Poll/Miss", STAMUNIT_OCCURENCES, "TMTimerPoll calls where nothing had expired.");
|
|---|
| 712 | STAM_REG(pVM, &pVM->tm.s.StatPollRunning, STAMTYPE_COUNTER, "/TM/Poll/Running", STAMUNIT_OCCURENCES, "TMTimerPoll calls where the queues were being run.");
|
|---|
| 713 | STAM_REG(pVM, &pVM->tm.s.StatPollSimple, STAMTYPE_COUNTER, "/TM/Poll/Simple", STAMUNIT_OCCURENCES, "TMTimerPoll calls where we could take the simple path.");
|
|---|
| 714 | STAM_REG(pVM, &pVM->tm.s.StatPollVirtual, STAMTYPE_COUNTER, "/TM/Poll/HitsVirtual", STAMUNIT_OCCURENCES, "The number of times TMTimerPoll found an expired TMCLOCK_VIRTUAL queue.");
|
|---|
| 715 | STAM_REG(pVM, &pVM->tm.s.StatPollVirtualSync, STAMTYPE_COUNTER, "/TM/Poll/HitsVirtualSync", STAMUNIT_OCCURENCES, "The number of times TMTimerPoll found an expired TMCLOCK_VIRTUAL_SYNC queue.");
|
|---|
| 716 |
|
|---|
| 717 | STAM_REG(pVM, &pVM->tm.s.StatPostponedR3, STAMTYPE_COUNTER, "/TM/PostponedR3", STAMUNIT_OCCURENCES, "Postponed due to unschedulable state, in ring-3.");
|
|---|
| 718 | STAM_REG(pVM, &pVM->tm.s.StatPostponedRZ, STAMTYPE_COUNTER, "/TM/PostponedRZ", STAMUNIT_OCCURENCES, "Postponed due to unschedulable state, in ring-0 / RC.");
|
|---|
| 719 |
|
|---|
| 720 | STAM_REG(pVM, &pVM->tm.s.StatScheduleOneR3, STAMTYPE_PROFILE, "/TM/ScheduleOneR3", STAMUNIT_TICKS_PER_CALL, "Profiling the scheduling of one queue during a TMTimer* call in EMT.");
|
|---|
| 721 | STAM_REG(pVM, &pVM->tm.s.StatScheduleOneRZ, STAMTYPE_PROFILE, "/TM/ScheduleOneRZ", STAMUNIT_TICKS_PER_CALL, "Profiling the scheduling of one queue during a TMTimer* call in EMT.");
|
|---|
| 722 | STAM_REG(pVM, &pVM->tm.s.StatScheduleSetFF, STAMTYPE_COUNTER, "/TM/ScheduleSetFF", STAMUNIT_OCCURENCES, "The number of times the timer FF was set instead of doing scheduling.");
|
|---|
| 723 |
|
|---|
| 724 | STAM_REG(pVM, &pVM->tm.s.StatTimerSet, STAMTYPE_COUNTER, "/TM/TimerSet", STAMUNIT_OCCURENCES, "Calls, except virtual sync timers");
|
|---|
| 725 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetOpt, STAMTYPE_COUNTER, "/TM/TimerSet/Opt", STAMUNIT_OCCURENCES, "Optimized path taken.");
|
|---|
| 726 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetR3, STAMTYPE_PROFILE, "/TM/TimerSet/R3", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSet calls made in ring-3.");
|
|---|
| 727 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRZ, STAMTYPE_PROFILE, "/TM/TimerSet/RZ", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSet calls made in ring-0 / RC.");
|
|---|
| 728 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStActive, STAMTYPE_COUNTER, "/TM/TimerSet/StActive", STAMUNIT_OCCURENCES, "ACTIVE");
|
|---|
| 729 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStExpDeliver, STAMTYPE_COUNTER, "/TM/TimerSet/StExpDeliver", STAMUNIT_OCCURENCES, "EXPIRED_DELIVER");
|
|---|
| 730 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStOther, STAMTYPE_COUNTER, "/TM/TimerSet/StOther", STAMUNIT_OCCURENCES, "Other states");
|
|---|
| 731 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStPendStop, STAMTYPE_COUNTER, "/TM/TimerSet/StPendStop", STAMUNIT_OCCURENCES, "PENDING_STOP");
|
|---|
| 732 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStPendStopSched, STAMTYPE_COUNTER, "/TM/TimerSet/StPendStopSched", STAMUNIT_OCCURENCES, "PENDING_STOP_SCHEDULE");
|
|---|
| 733 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStPendSched, STAMTYPE_COUNTER, "/TM/TimerSet/StPendSched", STAMUNIT_OCCURENCES, "PENDING_SCHEDULE");
|
|---|
| 734 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStPendResched, STAMTYPE_COUNTER, "/TM/TimerSet/StPendResched", STAMUNIT_OCCURENCES, "PENDING_RESCHEDULE");
|
|---|
| 735 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetStStopped, STAMTYPE_COUNTER, "/TM/TimerSet/StStopped", STAMUNIT_OCCURENCES, "STOPPED");
|
|---|
| 736 |
|
|---|
| 737 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetVs, STAMTYPE_COUNTER, "/TM/TimerSetVs", STAMUNIT_OCCURENCES, "TMTimerSet calls on virtual sync timers");
|
|---|
| 738 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetVsR3, STAMTYPE_PROFILE, "/TM/TimerSetVs/R3", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSet calls made in ring-3 on virtual sync timers.");
|
|---|
| 739 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetVsRZ, STAMTYPE_PROFILE, "/TM/TimerSetVs/RZ", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSet calls made in ring-0 / RC on virtual sync timers.");
|
|---|
| 740 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetVsStActive, STAMTYPE_COUNTER, "/TM/TimerSetVs/StActive", STAMUNIT_OCCURENCES, "ACTIVE");
|
|---|
| 741 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetVsStExpDeliver, STAMTYPE_COUNTER, "/TM/TimerSetVs/StExpDeliver", STAMUNIT_OCCURENCES, "EXPIRED_DELIVER");
|
|---|
| 742 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetVsStStopped, STAMTYPE_COUNTER, "/TM/TimerSetVs/StStopped", STAMUNIT_OCCURENCES, "STOPPED");
|
|---|
| 743 |
|
|---|
| 744 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelative, STAMTYPE_COUNTER, "/TM/TimerSetRelative", STAMUNIT_OCCURENCES, "Calls, except virtual sync timers");
|
|---|
| 745 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeOpt, STAMTYPE_COUNTER, "/TM/TimerSetRelative/Opt", STAMUNIT_OCCURENCES, "Optimized path taken.");
|
|---|
| 746 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeR3, STAMTYPE_PROFILE, "/TM/TimerSetRelative/R3", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSetRelative calls made in ring-3 (sans virtual sync).");
|
|---|
| 747 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeRZ, STAMTYPE_PROFILE, "/TM/TimerSetRelative/RZ", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSetReltaive calls made in ring-0 / RC (sans virtual sync).");
|
|---|
| 748 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStActive, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StActive", STAMUNIT_OCCURENCES, "ACTIVE");
|
|---|
| 749 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStExpDeliver, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StExpDeliver", STAMUNIT_OCCURENCES, "EXPIRED_DELIVER");
|
|---|
| 750 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStOther, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StOther", STAMUNIT_OCCURENCES, "Other states");
|
|---|
| 751 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStPendStop, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StPendStop", STAMUNIT_OCCURENCES, "PENDING_STOP");
|
|---|
| 752 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStPendStopSched, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StPendStopSched",STAMUNIT_OCCURENCES, "PENDING_STOP_SCHEDULE");
|
|---|
| 753 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStPendSched, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StPendSched", STAMUNIT_OCCURENCES, "PENDING_SCHEDULE");
|
|---|
| 754 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStPendResched, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StPendResched", STAMUNIT_OCCURENCES, "PENDING_RESCHEDULE");
|
|---|
| 755 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeStStopped, STAMTYPE_COUNTER, "/TM/TimerSetRelative/StStopped", STAMUNIT_OCCURENCES, "STOPPED");
|
|---|
| 756 |
|
|---|
| 757 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeVs, STAMTYPE_COUNTER, "/TM/TimerSetRelativeVs", STAMUNIT_OCCURENCES, "TMTimerSetRelative calls on virtual sync timers");
|
|---|
| 758 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeVsR3, STAMTYPE_PROFILE, "/TM/TimerSetRelativeVs/R3", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSetRelative calls made in ring-3 on virtual sync timers.");
|
|---|
| 759 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeVsRZ, STAMTYPE_PROFILE, "/TM/TimerSetRelativeVs/RZ", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerSetReltaive calls made in ring-0 / RC on virtual sync timers.");
|
|---|
| 760 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeVsStActive, STAMTYPE_COUNTER, "/TM/TimerSetRelativeVs/StActive", STAMUNIT_OCCURENCES, "ACTIVE");
|
|---|
| 761 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeVsStExpDeliver, STAMTYPE_COUNTER, "/TM/TimerSetRelativeVs/StExpDeliver", STAMUNIT_OCCURENCES, "EXPIRED_DELIVER");
|
|---|
| 762 | STAM_REG(pVM, &pVM->tm.s.StatTimerSetRelativeVsStStopped, STAMTYPE_COUNTER, "/TM/TimerSetRelativeVs/StStopped", STAMUNIT_OCCURENCES, "STOPPED");
|
|---|
| 763 |
|
|---|
| 764 | STAM_REG(pVM, &pVM->tm.s.StatTimerStopR3, STAMTYPE_PROFILE, "/TM/TimerStopR3", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerStop calls made in ring-3.");
|
|---|
| 765 | STAM_REG(pVM, &pVM->tm.s.StatTimerStopRZ, STAMTYPE_PROFILE, "/TM/TimerStopRZ", STAMUNIT_TICKS_PER_CALL, "Profiling TMTimerStop calls made in ring-0 / RC.");
|
|---|
| 766 |
|
|---|
| 767 | STAM_REG(pVM, &pVM->tm.s.StatVirtualGet, STAMTYPE_COUNTER, "/TM/VirtualGet", STAMUNIT_OCCURENCES, "The number of times TMTimerGet was called when the clock was running.");
|
|---|
| 768 | STAM_REG(pVM, &pVM->tm.s.StatVirtualGetSetFF, STAMTYPE_COUNTER, "/TM/VirtualGetSetFF", STAMUNIT_OCCURENCES, "Times we set the FF when calling TMTimerGet.");
|
|---|
| 769 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGet, STAMTYPE_COUNTER, "/TM/VirtualSyncGet", STAMUNIT_OCCURENCES, "The number of times tmVirtualSyncGetEx was called.");
|
|---|
| 770 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGetAdjLast, STAMTYPE_COUNTER, "/TM/VirtualSyncGet/AdjLast", STAMUNIT_OCCURENCES, "Times we've adjusted against the last returned time stamp .");
|
|---|
| 771 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGetELoop, STAMTYPE_COUNTER, "/TM/VirtualSyncGet/ELoop", STAMUNIT_OCCURENCES, "Times tmVirtualSyncGetEx has given up getting a consistent virtual sync data set.");
|
|---|
| 772 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGetExpired, STAMTYPE_COUNTER, "/TM/VirtualSyncGet/Expired", STAMUNIT_OCCURENCES, "Times tmVirtualSyncGetEx encountered an expired timer stopping the clock.");
|
|---|
| 773 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGetLocked, STAMTYPE_COUNTER, "/TM/VirtualSyncGet/Locked", STAMUNIT_OCCURENCES, "Times we successfully acquired the lock in tmVirtualSyncGetEx.");
|
|---|
| 774 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGetLockless, STAMTYPE_COUNTER, "/TM/VirtualSyncGet/Lockless", STAMUNIT_OCCURENCES, "Times tmVirtualSyncGetEx returned without needing to take the lock.");
|
|---|
| 775 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGetSetFF, STAMTYPE_COUNTER, "/TM/VirtualSyncGet/SetFF", STAMUNIT_OCCURENCES, "Times we set the FF when calling tmVirtualSyncGetEx.");
|
|---|
| 776 | STAM_REG(pVM, &pVM->tm.s.StatVirtualPause, STAMTYPE_COUNTER, "/TM/VirtualPause", STAMUNIT_OCCURENCES, "The number of times TMR3TimerPause was called.");
|
|---|
| 777 | STAM_REG(pVM, &pVM->tm.s.StatVirtualResume, STAMTYPE_COUNTER, "/TM/VirtualResume", STAMUNIT_OCCURENCES, "The number of times TMR3TimerResume was called.");
|
|---|
| 778 |
|
|---|
| 779 | STAM_REG(pVM, &pVM->tm.s.StatTimerCallbackSetFF, STAMTYPE_COUNTER, "/TM/CallbackSetFF", STAMUNIT_OCCURENCES, "The number of times the timer callback set FF.");
|
|---|
| 780 | STAM_REG(pVM, &pVM->tm.s.StatTimerCallback, STAMTYPE_COUNTER, "/TM/Callback", STAMUNIT_OCCURENCES, "The number of times the timer callback is invoked.");
|
|---|
| 781 |
|
|---|
| 782 | STAM_REG(pVM, &pVM->tm.s.StatTSCCatchupLE010, STAMTYPE_COUNTER, "/TM/TSC/Intercept/CatchupLE010", STAMUNIT_OCCURENCES, "In catch-up mode, 10% or lower.");
|
|---|
| 783 | STAM_REG(pVM, &pVM->tm.s.StatTSCCatchupLE025, STAMTYPE_COUNTER, "/TM/TSC/Intercept/CatchupLE025", STAMUNIT_OCCURENCES, "In catch-up mode, 25%-11%.");
|
|---|
| 784 | STAM_REG(pVM, &pVM->tm.s.StatTSCCatchupLE100, STAMTYPE_COUNTER, "/TM/TSC/Intercept/CatchupLE100", STAMUNIT_OCCURENCES, "In catch-up mode, 100%-26%.");
|
|---|
| 785 | STAM_REG(pVM, &pVM->tm.s.StatTSCCatchupOther, STAMTYPE_COUNTER, "/TM/TSC/Intercept/CatchupOther", STAMUNIT_OCCURENCES, "In catch-up mode, > 100%.");
|
|---|
| 786 | STAM_REG(pVM, &pVM->tm.s.StatTSCNotFixed, STAMTYPE_COUNTER, "/TM/TSC/Intercept/NotFixed", STAMUNIT_OCCURENCES, "TSC is not fixed, it may run at variable speed.");
|
|---|
| 787 | STAM_REG(pVM, &pVM->tm.s.StatTSCNotTicking, STAMTYPE_COUNTER, "/TM/TSC/Intercept/NotTicking", STAMUNIT_OCCURENCES, "TSC is not ticking.");
|
|---|
| 788 | STAM_REG(pVM, &pVM->tm.s.StatTSCSyncNotTicking, STAMTYPE_COUNTER, "/TM/TSC/Intercept/SyncNotTicking", STAMUNIT_OCCURENCES, "VirtualSync isn't ticking.");
|
|---|
| 789 | STAM_REG(pVM, &pVM->tm.s.StatTSCWarp, STAMTYPE_COUNTER, "/TM/TSC/Intercept/Warp", STAMUNIT_OCCURENCES, "Warpdrive is active.");
|
|---|
| 790 | STAM_REG(pVM, &pVM->tm.s.StatTSCSet, STAMTYPE_COUNTER, "/TM/TSC/Sets", STAMUNIT_OCCURENCES, "Calls to TMCpuTickSet.");
|
|---|
| 791 | STAM_REG(pVM, &pVM->tm.s.StatTSCUnderflow, STAMTYPE_COUNTER, "/TM/TSC/Underflow", STAMUNIT_OCCURENCES, "TSC underflow; corrected with last seen value .");
|
|---|
| 792 | STAM_REG(pVM, &pVM->tm.s.StatVirtualPause, STAMTYPE_COUNTER, "/TM/TSC/Pause", STAMUNIT_OCCURENCES, "The number of times the TSC was paused.");
|
|---|
| 793 | STAM_REG(pVM, &pVM->tm.s.StatVirtualResume, STAMTYPE_COUNTER, "/TM/TSC/Resume", STAMUNIT_OCCURENCES, "The number of times the TSC was resumed.");
|
|---|
| 794 | #endif /* VBOX_WITH_STATISTICS */
|
|---|
| 795 |
|
|---|
| 796 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
|---|
| 797 | {
|
|---|
| 798 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.offTSCRawSrc, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_TICKS, "TSC offset relative the raw source", "/TM/TSC/offCPU%u", i);
|
|---|
| 799 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
|---|
| 800 | # if defined(VBOX_WITH_STATISTICS) || defined(VBOX_WITH_NS_ACCOUNTING_STATS)
|
|---|
| 801 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.StatNsTotal, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_NS, "Resettable: Total CPU run time.", "/TM/CPU/%02u", i);
|
|---|
| 802 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.StatNsExecuting, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_OCCURENCE, "Resettable: Time spent executing guest code.", "/TM/CPU/%02u/PrfExecuting", i);
|
|---|
| 803 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.StatNsExecLong, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_OCCURENCE, "Resettable: Time spent executing guest code - long hauls.", "/TM/CPU/%02u/PrfExecLong", i);
|
|---|
| 804 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.StatNsExecShort, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_OCCURENCE, "Resettable: Time spent executing guest code - short stretches.", "/TM/CPU/%02u/PrfExecShort", i);
|
|---|
| 805 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.StatNsExecTiny, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_OCCURENCE, "Resettable: Time spent executing guest code - tiny bits.", "/TM/CPU/%02u/PrfExecTiny", i);
|
|---|
| 806 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.StatNsHalted, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_OCCURENCE, "Resettable: Time spent halted.", "/TM/CPU/%02u/PrfHalted", i);
|
|---|
| 807 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.StatNsOther, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_NS_PER_OCCURENCE, "Resettable: Time spent in the VMM or preempted.", "/TM/CPU/%02u/PrfOther", i);
|
|---|
| 808 | # endif
|
|---|
| 809 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.cNsTotal, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_NS, "Total CPU run time.", "/TM/CPU/%02u/cNsTotal", i);
|
|---|
| 810 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.cNsExecuting, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_NS, "Time spent executing guest code.", "/TM/CPU/%02u/cNsExecuting", i);
|
|---|
| 811 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.cNsHalted, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_NS, "Time spent halted.", "/TM/CPU/%02u/cNsHalted", i);
|
|---|
| 812 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.cNsOther, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_NS, "Time spent in the VMM or preempted.", "/TM/CPU/%02u/cNsOther", i);
|
|---|
| 813 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.cPeriodsExecuting, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Times executed guest code.", "/TM/CPU/%02u/cPeriodsExecuting", i);
|
|---|
| 814 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.cPeriodsHalted, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Times halted.", "/TM/CPU/%02u/cPeriodsHalted", i);
|
|---|
| 815 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.CpuLoad.cPctExecuting, STAMTYPE_U8, STAMVISIBILITY_ALWAYS, STAMUNIT_PCT, "Time spent executing guest code recently.", "/TM/CPU/%02u/pctExecuting", i);
|
|---|
| 816 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.CpuLoad.cPctHalted, STAMTYPE_U8, STAMVISIBILITY_ALWAYS, STAMUNIT_PCT, "Time spent halted recently.", "/TM/CPU/%02u/pctHalted", i);
|
|---|
| 817 | STAMR3RegisterF(pVM, &pVM->aCpus[i].tm.s.CpuLoad.cPctOther, STAMTYPE_U8, STAMVISIBILITY_ALWAYS, STAMUNIT_PCT, "Time spent in the VMM or preempted recently.", "/TM/CPU/%02u/pctOther", i);
|
|---|
| 818 | #endif
|
|---|
| 819 | }
|
|---|
| 820 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
|---|
| 821 | STAMR3RegisterF(pVM, &pVM->tm.s.CpuLoad.cPctExecuting, STAMTYPE_U8, STAMVISIBILITY_ALWAYS, STAMUNIT_PCT, "Time spent executing guest code recently.", "/TM/CPU/pctExecuting");
|
|---|
| 822 | STAMR3RegisterF(pVM, &pVM->tm.s.CpuLoad.cPctHalted, STAMTYPE_U8, STAMVISIBILITY_ALWAYS, STAMUNIT_PCT, "Time spent halted recently.", "/TM/CPU/pctHalted");
|
|---|
| 823 | STAMR3RegisterF(pVM, &pVM->tm.s.CpuLoad.cPctOther, STAMTYPE_U8, STAMVISIBILITY_ALWAYS, STAMUNIT_PCT, "Time spent in the VMM or preempted recently.", "/TM/CPU/pctOther");
|
|---|
| 824 | #endif
|
|---|
| 825 |
|
|---|
| 826 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 827 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncCatchup, STAMTYPE_PROFILE_ADV, "/TM/VirtualSync/CatchUp", STAMUNIT_TICKS_PER_OCCURENCE, "Counting and measuring the times spent catching up.");
|
|---|
| 828 | STAM_REG(pVM, (void *)&pVM->tm.s.fVirtualSyncCatchUp, STAMTYPE_U8, "/TM/VirtualSync/CatchUpActive", STAMUNIT_NONE, "Catch-Up active indicator.");
|
|---|
| 829 | STAM_REG(pVM, (void *)&pVM->tm.s.u32VirtualSyncCatchUpPercentage, STAMTYPE_U32, "/TM/VirtualSync/CatchUpPercentage", STAMUNIT_PCT, "The catch-up percentage. (+100/100 to get clock multiplier)");
|
|---|
| 830 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncFF, STAMTYPE_PROFILE, "/TM/VirtualSync/FF", STAMUNIT_TICKS_PER_OCCURENCE, "Time spent in TMR3VirtualSyncFF by all but the dedicate timer EMT.");
|
|---|
| 831 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGiveUp, STAMTYPE_COUNTER, "/TM/VirtualSync/GiveUp", STAMUNIT_OCCURENCES, "Times the catch-up was abandoned.");
|
|---|
| 832 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncGiveUpBeforeStarting, STAMTYPE_COUNTER, "/TM/VirtualSync/GiveUpBeforeStarting",STAMUNIT_OCCURENCES, "Times the catch-up was abandoned before even starting. (Typically debugging++.)");
|
|---|
| 833 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncRun, STAMTYPE_COUNTER, "/TM/VirtualSync/Run", STAMUNIT_OCCURENCES, "Times the virtual sync timer queue was considered.");
|
|---|
| 834 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncRunRestart, STAMTYPE_COUNTER, "/TM/VirtualSync/Run/Restarts", STAMUNIT_OCCURENCES, "Times the clock was restarted after a run.");
|
|---|
| 835 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncRunStop, STAMTYPE_COUNTER, "/TM/VirtualSync/Run/Stop", STAMUNIT_OCCURENCES, "Times the clock was stopped when calculating the current time before examining the timers.");
|
|---|
| 836 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncRunStoppedAlready, STAMTYPE_COUNTER, "/TM/VirtualSync/Run/StoppedAlready", STAMUNIT_OCCURENCES, "Times the clock was already stopped elsewhere (TMVirtualSyncGet).");
|
|---|
| 837 | STAM_REG(pVM, &pVM->tm.s.StatVirtualSyncRunSlack, STAMTYPE_PROFILE, "/TM/VirtualSync/Run/Slack", STAMUNIT_NS_PER_OCCURENCE, "The scheduling slack. (Catch-up handed out when running timers.)");
|
|---|
| 838 | for (unsigned i = 0; i < RT_ELEMENTS(pVM->tm.s.aVirtualSyncCatchUpPeriods); i++)
|
|---|
| 839 | {
|
|---|
| 840 | STAMR3RegisterF(pVM, &pVM->tm.s.aVirtualSyncCatchUpPeriods[i].u32Percentage, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_PCT, "The catch-up percentage.", "/TM/VirtualSync/Periods/%u", i);
|
|---|
| 841 | STAMR3RegisterF(pVM, &pVM->tm.s.aStatVirtualSyncCatchupAdjust[i], STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Times adjusted to this period.", "/TM/VirtualSync/Periods/%u/Adjust", i);
|
|---|
| 842 | STAMR3RegisterF(pVM, &pVM->tm.s.aStatVirtualSyncCatchupInitial[i], STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Times started in this period.", "/TM/VirtualSync/Periods/%u/Initial", i);
|
|---|
| 843 | STAMR3RegisterF(pVM, &pVM->tm.s.aVirtualSyncCatchUpPeriods[i].u64Start, STAMTYPE_U64, STAMVISIBILITY_ALWAYS, STAMUNIT_NS, "Start of this period (lag).", "/TM/VirtualSync/Periods/%u/Start", i);
|
|---|
| 844 | }
|
|---|
| 845 | #endif /* VBOX_WITH_STATISTICS */
|
|---|
| 846 |
|
|---|
| 847 | /*
|
|---|
| 848 | * Register info handlers.
|
|---|
| 849 | */
|
|---|
| 850 | DBGFR3InfoRegisterInternalEx(pVM, "timers", "Dumps all timers. No arguments.", tmR3TimerInfo, DBGFINFO_FLAGS_RUN_ON_EMT);
|
|---|
| 851 | DBGFR3InfoRegisterInternalEx(pVM, "activetimers", "Dumps active all timers. No arguments.", tmR3TimerInfoActive, DBGFINFO_FLAGS_RUN_ON_EMT);
|
|---|
| 852 | DBGFR3InfoRegisterInternalEx(pVM, "clocks", "Display the time of the various clocks.", tmR3InfoClocks, DBGFINFO_FLAGS_RUN_ON_EMT);
|
|---|
| 853 |
|
|---|
| 854 | return VINF_SUCCESS;
|
|---|
| 855 | }
|
|---|
| 856 |
|
|---|
| 857 |
|
|---|
| 858 | /**
|
|---|
| 859 | * Checks if the host CPU has a fixed TSC frequency.
|
|---|
| 860 | *
|
|---|
| 861 | * @returns true if it has, false if it hasn't.
|
|---|
| 862 | *
|
|---|
| 863 | * @remarks This test doesn't bother with very old CPUs that don't do power
|
|---|
| 864 | * management or any other stuff that might influence the TSC rate.
|
|---|
| 865 | * This isn't currently relevant.
|
|---|
| 866 | */
|
|---|
| 867 | static bool tmR3HasFixedTSC(PVM pVM)
|
|---|
| 868 | {
|
|---|
| 869 | /*
|
|---|
| 870 | * ASSUME that if the GIP is in invariant TSC mode, it's because the CPU
|
|---|
| 871 | * actually has invariant TSC.
|
|---|
| 872 | */
|
|---|
| 873 | PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
|
|---|
| 874 | if (pGip->u32Mode == SUPGIPMODE_INVARIANT_TSC)
|
|---|
| 875 | return true;
|
|---|
| 876 |
|
|---|
| 877 | /*
|
|---|
| 878 | * Go by features and model info from the CPUID instruction.
|
|---|
| 879 | */
|
|---|
| 880 | if (ASMHasCpuId())
|
|---|
| 881 | {
|
|---|
| 882 | uint32_t uEAX, uEBX, uECX, uEDX;
|
|---|
| 883 |
|
|---|
| 884 | /*
|
|---|
| 885 | * By feature. (Used to be AMD specific, intel seems to have picked it up.)
|
|---|
| 886 | */
|
|---|
| 887 | ASMCpuId(0x80000000, &uEAX, &uEBX, &uECX, &uEDX);
|
|---|
| 888 | if (uEAX >= 0x80000007 && ASMIsValidExtRange(uEAX))
|
|---|
| 889 | {
|
|---|
| 890 | ASMCpuId(0x80000007, &uEAX, &uEBX, &uECX, &uEDX);
|
|---|
| 891 | if ( (uEDX & X86_CPUID_AMD_ADVPOWER_EDX_TSCINVAR) /* TscInvariant */
|
|---|
| 892 | && pGip->u32Mode != SUPGIPMODE_ASYNC_TSC) /* No fixed tsc if the gip timer is in async mode. */
|
|---|
| 893 | return true;
|
|---|
| 894 | }
|
|---|
| 895 |
|
|---|
| 896 | /*
|
|---|
| 897 | * By model.
|
|---|
| 898 | */
|
|---|
| 899 | if (CPUMGetHostCpuVendor(pVM) == CPUMCPUVENDOR_AMD)
|
|---|
| 900 | {
|
|---|
| 901 | /*
|
|---|
| 902 | * AuthenticAMD - Check for APM support and that TscInvariant is set.
|
|---|
| 903 | *
|
|---|
| 904 | * This test isn't correct with respect to fixed/non-fixed TSC and
|
|---|
| 905 | * older models, but this isn't relevant since the result is currently
|
|---|
| 906 | * only used for making a decision on AMD-V models.
|
|---|
| 907 | */
|
|---|
| 908 | #if 0 /* Promoted to generic */
|
|---|
| 909 | ASMCpuId(0x80000000, &uEAX, &uEBX, &uECX, &uEDX);
|
|---|
| 910 | if (uEAX >= 0x80000007)
|
|---|
| 911 | {
|
|---|
| 912 | ASMCpuId(0x80000007, &uEAX, &uEBX, &uECX, &uEDX);
|
|---|
| 913 | if ( (uEDX & X86_CPUID_AMD_ADVPOWER_EDX_TSCINVAR) /* TscInvariant */
|
|---|
| 914 | && ( pGip->u32Mode == SUPGIPMODE_SYNC_TSC /* No fixed tsc if the gip timer is in async mode. */
|
|---|
| 915 | || pGip->u32Mode == SUPGIPMODE_INVARIANT_TSC))
|
|---|
| 916 | return true;
|
|---|
| 917 | }
|
|---|
| 918 | #endif
|
|---|
| 919 | }
|
|---|
| 920 | else if (CPUMGetHostCpuVendor(pVM) == CPUMCPUVENDOR_INTEL)
|
|---|
| 921 | {
|
|---|
| 922 | /*
|
|---|
| 923 | * GenuineIntel - Check the model number.
|
|---|
| 924 | *
|
|---|
| 925 | * This test is lacking in the same way and for the same reasons
|
|---|
| 926 | * as the AMD test above.
|
|---|
| 927 | */
|
|---|
| 928 | /** @todo use ASMGetCpuFamily() and ASMGetCpuModel() here. */
|
|---|
| 929 | ASMCpuId(1, &uEAX, &uEBX, &uECX, &uEDX);
|
|---|
| 930 | unsigned uModel = (uEAX >> 4) & 0x0f;
|
|---|
| 931 | unsigned uFamily = (uEAX >> 8) & 0x0f;
|
|---|
| 932 | if (uFamily == 0x0f)
|
|---|
| 933 | uFamily += (uEAX >> 20) & 0xff;
|
|---|
| 934 | if (uFamily >= 0x06)
|
|---|
| 935 | uModel += ((uEAX >> 16) & 0x0f) << 4;
|
|---|
| 936 | if ( (uFamily == 0x0f /*P4*/ && uModel >= 0x03)
|
|---|
| 937 | || (uFamily == 0x06 /*P2/P3*/ && uModel >= 0x0e))
|
|---|
| 938 | return true;
|
|---|
| 939 | }
|
|---|
| 940 | else if (CPUMGetHostCpuVendor(pVM) == CPUMCPUVENDOR_VIA)
|
|---|
| 941 | {
|
|---|
| 942 | /*
|
|---|
| 943 | * CentaurHauls - Check the model, family and stepping.
|
|---|
| 944 | *
|
|---|
| 945 | * This only checks for VIA CPU models Nano X2, Nano X3,
|
|---|
| 946 | * Eden X2 and QuadCore.
|
|---|
| 947 | */
|
|---|
| 948 | /** @todo use ASMGetCpuFamily() and ASMGetCpuModel() here. */
|
|---|
| 949 | ASMCpuId(1, &uEAX, &uEBX, &uECX, &uEDX);
|
|---|
| 950 | unsigned uStepping = (uEAX & 0x0f);
|
|---|
| 951 | unsigned uModel = (uEAX >> 4) & 0x0f;
|
|---|
| 952 | unsigned uFamily = (uEAX >> 8) & 0x0f;
|
|---|
| 953 | if ( uFamily == 0x06
|
|---|
| 954 | && uModel == 0x0f
|
|---|
| 955 | && uStepping >= 0x0c
|
|---|
| 956 | && uStepping <= 0x0f)
|
|---|
| 957 | return true;
|
|---|
| 958 | }
|
|---|
| 959 | else if (CPUMGetHostCpuVendor(pVM) == CPUMCPUVENDOR_SHANGHAI)
|
|---|
| 960 | {
|
|---|
| 961 | /*
|
|---|
| 962 | * Shanghai - Check the model, family and stepping.
|
|---|
| 963 | */
|
|---|
| 964 | /** @todo use ASMGetCpuFamily() and ASMGetCpuModel() here. */
|
|---|
| 965 | ASMCpuId(1, &uEAX, &uEBX, &uECX, &uEDX);
|
|---|
| 966 | unsigned uFamily = (uEAX >> 8) & 0x0f;
|
|---|
| 967 | if ( uFamily == 0x06
|
|---|
| 968 | || uFamily == 0x07)
|
|---|
| 969 | {
|
|---|
| 970 | return true;
|
|---|
| 971 | }
|
|---|
| 972 | }
|
|---|
| 973 | }
|
|---|
| 974 | return false;
|
|---|
| 975 | }
|
|---|
| 976 |
|
|---|
| 977 |
|
|---|
| 978 | /**
|
|---|
| 979 | * Calibrate the CPU tick.
|
|---|
| 980 | *
|
|---|
| 981 | * @returns Number of ticks per second.
|
|---|
| 982 | */
|
|---|
| 983 | static uint64_t tmR3CalibrateTSC(void)
|
|---|
| 984 | {
|
|---|
| 985 | uint64_t u64Hz;
|
|---|
| 986 |
|
|---|
| 987 | /*
|
|---|
| 988 | * Use GIP when available. Prefere the nominal one, no need to wait for it.
|
|---|
| 989 | */
|
|---|
| 990 | PSUPGLOBALINFOPAGE pGip = g_pSUPGlobalInfoPage;
|
|---|
| 991 | if (pGip)
|
|---|
| 992 | {
|
|---|
| 993 | u64Hz = pGip->u64CpuHz;
|
|---|
| 994 | if (u64Hz < _1T && u64Hz > _1M)
|
|---|
| 995 | return u64Hz;
|
|---|
| 996 | AssertFailed(); /* This shouldn't happen. */
|
|---|
| 997 |
|
|---|
| 998 | u64Hz = SUPGetCpuHzFromGip(pGip);
|
|---|
| 999 | if (u64Hz < _1T && u64Hz > _1M)
|
|---|
| 1000 | return u64Hz;
|
|---|
| 1001 |
|
|---|
| 1002 | AssertFailed(); /* This shouldn't happen. */
|
|---|
| 1003 | }
|
|---|
| 1004 | /* else: This should only happen in fake SUPLib mode, which we don't really support any more... */
|
|---|
| 1005 |
|
|---|
| 1006 | /* Call this once first to make sure it's initialized. */
|
|---|
| 1007 | RTTimeNanoTS();
|
|---|
| 1008 |
|
|---|
| 1009 | /*
|
|---|
| 1010 | * Yield the CPU to increase our chances of getting
|
|---|
| 1011 | * a correct value.
|
|---|
| 1012 | */
|
|---|
| 1013 | RTThreadYield(); /* Try avoid interruptions between TSC and NanoTS samplings. */
|
|---|
| 1014 | static const unsigned s_auSleep[5] = { 50, 30, 30, 40, 40 };
|
|---|
| 1015 | uint64_t au64Samples[5];
|
|---|
| 1016 | unsigned i;
|
|---|
| 1017 | for (i = 0; i < RT_ELEMENTS(au64Samples); i++)
|
|---|
| 1018 | {
|
|---|
| 1019 | RTMSINTERVAL cMillies;
|
|---|
| 1020 | int cTries = 5;
|
|---|
| 1021 | uint64_t u64Start = ASMReadTSC();
|
|---|
| 1022 | uint64_t u64End;
|
|---|
| 1023 | uint64_t StartTS = RTTimeNanoTS();
|
|---|
| 1024 | uint64_t EndTS;
|
|---|
| 1025 | do
|
|---|
| 1026 | {
|
|---|
| 1027 | RTThreadSleep(s_auSleep[i]);
|
|---|
| 1028 | u64End = ASMReadTSC();
|
|---|
| 1029 | EndTS = RTTimeNanoTS();
|
|---|
| 1030 | cMillies = (RTMSINTERVAL)((EndTS - StartTS + 500000) / 1000000);
|
|---|
| 1031 | } while ( cMillies == 0 /* the sleep may be interrupted... */
|
|---|
| 1032 | || (cMillies < 20 && --cTries > 0));
|
|---|
| 1033 | uint64_t u64Diff = u64End - u64Start;
|
|---|
| 1034 |
|
|---|
| 1035 | au64Samples[i] = (u64Diff * 1000) / cMillies;
|
|---|
| 1036 | AssertMsg(cTries > 0, ("cMillies=%d i=%d\n", cMillies, i));
|
|---|
| 1037 | }
|
|---|
| 1038 |
|
|---|
| 1039 | /*
|
|---|
| 1040 | * Discard the highest and lowest results and calculate the average.
|
|---|
| 1041 | */
|
|---|
| 1042 | unsigned iHigh = 0;
|
|---|
| 1043 | unsigned iLow = 0;
|
|---|
| 1044 | for (i = 1; i < RT_ELEMENTS(au64Samples); i++)
|
|---|
| 1045 | {
|
|---|
| 1046 | if (au64Samples[i] < au64Samples[iLow])
|
|---|
| 1047 | iLow = i;
|
|---|
| 1048 | if (au64Samples[i] > au64Samples[iHigh])
|
|---|
| 1049 | iHigh = i;
|
|---|
| 1050 | }
|
|---|
| 1051 | au64Samples[iLow] = 0;
|
|---|
| 1052 | au64Samples[iHigh] = 0;
|
|---|
| 1053 |
|
|---|
| 1054 | u64Hz = au64Samples[0];
|
|---|
| 1055 | for (i = 1; i < RT_ELEMENTS(au64Samples); i++)
|
|---|
| 1056 | u64Hz += au64Samples[i];
|
|---|
| 1057 | u64Hz /= RT_ELEMENTS(au64Samples) - 2;
|
|---|
| 1058 |
|
|---|
| 1059 | return u64Hz;
|
|---|
| 1060 | }
|
|---|
| 1061 |
|
|---|
| 1062 |
|
|---|
| 1063 | /**
|
|---|
| 1064 | * Finalizes the TM initialization.
|
|---|
| 1065 | *
|
|---|
| 1066 | * @returns VBox status code.
|
|---|
| 1067 | * @param pVM The cross context VM structure.
|
|---|
| 1068 | */
|
|---|
| 1069 | VMM_INT_DECL(int) TMR3InitFinalize(PVM pVM)
|
|---|
| 1070 | {
|
|---|
| 1071 | int rc;
|
|---|
| 1072 |
|
|---|
| 1073 | /*
|
|---|
| 1074 | * Resolve symbols.
|
|---|
| 1075 | */
|
|---|
| 1076 | if (VM_IS_RAW_MODE_ENABLED(pVM))
|
|---|
| 1077 | {
|
|---|
| 1078 | rc = PDMR3LdrGetSymbolRC(pVM, NULL, "tmVirtualNanoTSBad", &pVM->tm.s.VirtualGetRawDataRC.pfnBad);
|
|---|
| 1079 | AssertRCReturn(rc, rc);
|
|---|
| 1080 | rc = PDMR3LdrGetSymbolRC(pVM, NULL, "tmVirtualNanoTSBadCpuIndex", &pVM->tm.s.VirtualGetRawDataRC.pfnBadCpuIndex);
|
|---|
| 1081 | AssertRCReturn(rc, rc);
|
|---|
| 1082 | rc = PDMR3LdrGetSymbolRC(pVM, NULL, "tmVirtualNanoTSRediscover", &pVM->tm.s.VirtualGetRawDataRC.pfnRediscover);
|
|---|
| 1083 | AssertRCReturn(rc, rc);
|
|---|
| 1084 | pVM->tm.s.pfnVirtualGetRawRC = pVM->tm.s.VirtualGetRawDataRC.pfnRediscover;
|
|---|
| 1085 | }
|
|---|
| 1086 |
|
|---|
| 1087 | rc = PDMR3LdrGetSymbolR0(pVM, NULL, "tmVirtualNanoTSBad", &pVM->tm.s.VirtualGetRawDataR0.pfnBad);
|
|---|
| 1088 | AssertRCReturn(rc, rc);
|
|---|
| 1089 | rc = PDMR3LdrGetSymbolR0(pVM, NULL, "tmVirtualNanoTSBadCpuIndex", &pVM->tm.s.VirtualGetRawDataR0.pfnBadCpuIndex);
|
|---|
| 1090 | AssertRCReturn(rc, rc);
|
|---|
| 1091 | rc = PDMR3LdrGetSymbolR0(pVM, NULL, "tmVirtualNanoTSRediscover", &pVM->tm.s.VirtualGetRawDataR0.pfnRediscover);
|
|---|
| 1092 | AssertRCReturn(rc, rc);
|
|---|
| 1093 | pVM->tm.s.pfnVirtualGetRawR0 = pVM->tm.s.VirtualGetRawDataR0.pfnRediscover;
|
|---|
| 1094 |
|
|---|
| 1095 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
|---|
| 1096 | /*
|
|---|
| 1097 | * Create a timer for refreshing the CPU load stats.
|
|---|
| 1098 | */
|
|---|
| 1099 | PTMTIMER pTimer;
|
|---|
| 1100 | rc = TMR3TimerCreateInternal(pVM, TMCLOCK_REAL, tmR3CpuLoadTimer, NULL, "CPU Load Timer", &pTimer);
|
|---|
| 1101 | if (RT_SUCCESS(rc))
|
|---|
| 1102 | rc = TMTimerSetMillies(pTimer, 1000);
|
|---|
| 1103 | #endif
|
|---|
| 1104 |
|
|---|
| 1105 | /*
|
|---|
| 1106 | * GIM is now initialized. Determine if TSC mode switching is allowed (respecting CFGM override).
|
|---|
| 1107 | */
|
|---|
| 1108 | pVM->tm.s.fTSCModeSwitchAllowed &= tmR3HasFixedTSC(pVM) && GIMIsEnabled(pVM) && !VM_IS_RAW_MODE_ENABLED(pVM);
|
|---|
| 1109 | LogRel(("TM: TMR3InitFinalize: fTSCModeSwitchAllowed=%RTbool\n", pVM->tm.s.fTSCModeSwitchAllowed));
|
|---|
| 1110 | return rc;
|
|---|
| 1111 | }
|
|---|
| 1112 |
|
|---|
| 1113 |
|
|---|
| 1114 | /**
|
|---|
| 1115 | * Applies relocations to data and code managed by this
|
|---|
| 1116 | * component. This function will be called at init and
|
|---|
| 1117 | * whenever the VMM need to relocate it self inside the GC.
|
|---|
| 1118 | *
|
|---|
| 1119 | * @param pVM The cross context VM structure.
|
|---|
| 1120 | * @param offDelta Relocation delta relative to old location.
|
|---|
| 1121 | */
|
|---|
| 1122 | VMM_INT_DECL(void) TMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
|
|---|
| 1123 | {
|
|---|
| 1124 | LogFlow(("TMR3Relocate\n"));
|
|---|
| 1125 |
|
|---|
| 1126 | pVM->tm.s.paTimerQueuesR0 = MMHyperR3ToR0(pVM, pVM->tm.s.paTimerQueuesR3);
|
|---|
| 1127 |
|
|---|
| 1128 | if (VM_IS_RAW_MODE_ENABLED(pVM))
|
|---|
| 1129 | {
|
|---|
| 1130 | pVM->tm.s.pvGIPRC = MMHyperR3ToRC(pVM, pVM->tm.s.pvGIPR3);
|
|---|
| 1131 | pVM->tm.s.paTimerQueuesRC = MMHyperR3ToRC(pVM, pVM->tm.s.paTimerQueuesR3);
|
|---|
| 1132 | pVM->tm.s.VirtualGetRawDataRC.pu64Prev += offDelta;
|
|---|
| 1133 | pVM->tm.s.VirtualGetRawDataRC.pfnBad += offDelta;
|
|---|
| 1134 | pVM->tm.s.VirtualGetRawDataRC.pfnBadCpuIndex += offDelta;
|
|---|
| 1135 | pVM->tm.s.VirtualGetRawDataRC.pfnRediscover += offDelta;
|
|---|
| 1136 | pVM->tm.s.pfnVirtualGetRawRC += offDelta;
|
|---|
| 1137 | }
|
|---|
| 1138 |
|
|---|
| 1139 | /*
|
|---|
| 1140 | * Iterate the timers updating the pVMRC pointers.
|
|---|
| 1141 | */
|
|---|
| 1142 | for (PTMTIMER pTimer = pVM->tm.s.pCreated; pTimer; pTimer = pTimer->pBigNext)
|
|---|
| 1143 | {
|
|---|
| 1144 | pTimer->pVMRC = pVM->pVMRC;
|
|---|
| 1145 | pTimer->pVMR0 = pVM->pVMR0;
|
|---|
| 1146 | }
|
|---|
| 1147 | }
|
|---|
| 1148 |
|
|---|
| 1149 |
|
|---|
| 1150 | /**
|
|---|
| 1151 | * Terminates the TM.
|
|---|
| 1152 | *
|
|---|
| 1153 | * Termination means cleaning up and freeing all resources,
|
|---|
| 1154 | * the VM it self is at this point powered off or suspended.
|
|---|
| 1155 | *
|
|---|
| 1156 | * @returns VBox status code.
|
|---|
| 1157 | * @param pVM The cross context VM structure.
|
|---|
| 1158 | */
|
|---|
| 1159 | VMM_INT_DECL(int) TMR3Term(PVM pVM)
|
|---|
| 1160 | {
|
|---|
| 1161 | AssertMsg(pVM->tm.s.offVM, ("bad init order!\n"));
|
|---|
| 1162 | if (pVM->tm.s.pTimer)
|
|---|
| 1163 | {
|
|---|
| 1164 | int rc = RTTimerDestroy(pVM->tm.s.pTimer);
|
|---|
| 1165 | AssertRC(rc);
|
|---|
| 1166 | pVM->tm.s.pTimer = NULL;
|
|---|
| 1167 | }
|
|---|
| 1168 |
|
|---|
| 1169 | return VINF_SUCCESS;
|
|---|
| 1170 | }
|
|---|
| 1171 |
|
|---|
| 1172 |
|
|---|
| 1173 | /**
|
|---|
| 1174 | * The VM is being reset.
|
|---|
| 1175 | *
|
|---|
| 1176 | * For the TM component this means that a rescheduling is preformed,
|
|---|
| 1177 | * the FF is cleared and but without running the queues. We'll have to
|
|---|
| 1178 | * check if this makes sense or not, but it seems like a good idea now....
|
|---|
| 1179 | *
|
|---|
| 1180 | * @param pVM The cross context VM structure.
|
|---|
| 1181 | */
|
|---|
| 1182 | VMM_INT_DECL(void) TMR3Reset(PVM pVM)
|
|---|
| 1183 | {
|
|---|
| 1184 | LogFlow(("TMR3Reset:\n"));
|
|---|
| 1185 | VM_ASSERT_EMT(pVM);
|
|---|
| 1186 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1187 |
|
|---|
| 1188 | /*
|
|---|
| 1189 | * Abort any pending catch up.
|
|---|
| 1190 | * This isn't perfect...
|
|---|
| 1191 | */
|
|---|
| 1192 | if (pVM->tm.s.fVirtualSyncCatchUp)
|
|---|
| 1193 | {
|
|---|
| 1194 | const uint64_t offVirtualNow = TMVirtualGetNoCheck(pVM);
|
|---|
| 1195 | const uint64_t offVirtualSyncNow = TMVirtualSyncGetNoCheck(pVM);
|
|---|
| 1196 | if (pVM->tm.s.fVirtualSyncCatchUp)
|
|---|
| 1197 | {
|
|---|
| 1198 | STAM_PROFILE_ADV_STOP(&pVM->tm.s.StatVirtualSyncCatchup, c);
|
|---|
| 1199 |
|
|---|
| 1200 | const uint64_t offOld = pVM->tm.s.offVirtualSyncGivenUp;
|
|---|
| 1201 | const uint64_t offNew = offVirtualNow - offVirtualSyncNow;
|
|---|
| 1202 | Assert(offOld <= offNew);
|
|---|
| 1203 | ASMAtomicWriteU64((uint64_t volatile *)&pVM->tm.s.offVirtualSyncGivenUp, offNew);
|
|---|
| 1204 | ASMAtomicWriteU64((uint64_t volatile *)&pVM->tm.s.offVirtualSync, offNew);
|
|---|
| 1205 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncCatchUp, false);
|
|---|
| 1206 | LogRel(("TM: Aborting catch-up attempt on reset with a %'RU64 ns lag on reset; new total: %'RU64 ns\n", offNew - offOld, offNew));
|
|---|
| 1207 | }
|
|---|
| 1208 | }
|
|---|
| 1209 |
|
|---|
| 1210 | /*
|
|---|
| 1211 | * Process the queues.
|
|---|
| 1212 | */
|
|---|
| 1213 | for (int i = 0; i < TMCLOCK_MAX; i++)
|
|---|
| 1214 | tmTimerQueueSchedule(pVM, &pVM->tm.s.paTimerQueuesR3[i]);
|
|---|
| 1215 | #ifdef VBOX_STRICT
|
|---|
| 1216 | tmTimerQueuesSanityChecks(pVM, "TMR3Reset");
|
|---|
| 1217 | #endif
|
|---|
| 1218 |
|
|---|
| 1219 | PVMCPU pVCpuDst = &pVM->aCpus[pVM->tm.s.idTimerCpu];
|
|---|
| 1220 | VMCPU_FF_CLEAR(pVCpuDst, VMCPU_FF_TIMER); /** @todo FIXME: this isn't right. */
|
|---|
| 1221 |
|
|---|
| 1222 | /*
|
|---|
| 1223 | * Switch TM TSC mode back to the original mode after a reset for
|
|---|
| 1224 | * paravirtualized guests that alter the TM TSC mode during operation.
|
|---|
| 1225 | */
|
|---|
| 1226 | if ( pVM->tm.s.fTSCModeSwitchAllowed
|
|---|
| 1227 | && pVM->tm.s.enmTSCMode != pVM->tm.s.enmOriginalTSCMode)
|
|---|
| 1228 | {
|
|---|
| 1229 | VM_ASSERT_EMT0(pVM);
|
|---|
| 1230 | tmR3CpuTickParavirtDisable(pVM, &pVM->aCpus[0], NULL /* pvData */);
|
|---|
| 1231 | }
|
|---|
| 1232 | Assert(!GIMIsParavirtTscEnabled(pVM));
|
|---|
| 1233 | pVM->tm.s.fParavirtTscEnabled = false;
|
|---|
| 1234 |
|
|---|
| 1235 | /*
|
|---|
| 1236 | * Reset TSC to avoid a Windows 8+ bug (see @bugref{8926}). If Windows
|
|---|
| 1237 | * sees TSC value beyond 0x40000000000 at startup, it will reset the
|
|---|
| 1238 | * TSC on boot-up CPU only, causing confusion and mayhem with SMP.
|
|---|
| 1239 | */
|
|---|
| 1240 | VM_ASSERT_EMT0(pVM);
|
|---|
| 1241 | uint64_t offTscRawSrc;
|
|---|
| 1242 | switch (pVM->tm.s.enmTSCMode)
|
|---|
| 1243 | {
|
|---|
| 1244 | case TMTSCMODE_REAL_TSC_OFFSET:
|
|---|
| 1245 | offTscRawSrc = SUPReadTsc();
|
|---|
| 1246 | break;
|
|---|
| 1247 | case TMTSCMODE_DYNAMIC:
|
|---|
| 1248 | case TMTSCMODE_VIRT_TSC_EMULATED:
|
|---|
| 1249 | offTscRawSrc = TMVirtualSyncGetNoCheck(pVM);
|
|---|
| 1250 | offTscRawSrc = ASMMultU64ByU32DivByU32(offTscRawSrc, pVM->tm.s.cTSCTicksPerSecond, TMCLOCK_FREQ_VIRTUAL);
|
|---|
| 1251 | break;
|
|---|
| 1252 | case TMTSCMODE_NATIVE_API:
|
|---|
| 1253 | /** @todo NEM TSC reset on reset for Windows8+ bug workaround. */
|
|---|
| 1254 | offTscRawSrc = 0;
|
|---|
| 1255 | break;
|
|---|
| 1256 | default:
|
|---|
| 1257 | AssertFailedBreakStmt(offTscRawSrc = 0);
|
|---|
| 1258 | }
|
|---|
| 1259 | for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
|
|---|
| 1260 | {
|
|---|
| 1261 | pVM->aCpus[iCpu].tm.s.offTSCRawSrc = offTscRawSrc;
|
|---|
| 1262 | pVM->aCpus[iCpu].tm.s.u64TSC = 0;
|
|---|
| 1263 | pVM->aCpus[iCpu].tm.s.u64TSCLastSeen = 0;
|
|---|
| 1264 | }
|
|---|
| 1265 |
|
|---|
| 1266 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1267 | }
|
|---|
| 1268 |
|
|---|
| 1269 |
|
|---|
| 1270 | /**
|
|---|
| 1271 | * Resolve a builtin RC symbol.
|
|---|
| 1272 | * Called by PDM when loading or relocating GC modules.
|
|---|
| 1273 | *
|
|---|
| 1274 | * @returns VBox status
|
|---|
| 1275 | * @param pVM The cross context VM structure.
|
|---|
| 1276 | * @param pszSymbol Symbol to resolve.
|
|---|
| 1277 | * @param pRCPtrValue Where to store the symbol value.
|
|---|
| 1278 | * @remark This has to work before TMR3Relocate() is called.
|
|---|
| 1279 | */
|
|---|
| 1280 | VMM_INT_DECL(int) TMR3GetImportRC(PVM pVM, const char *pszSymbol, PRTRCPTR pRCPtrValue)
|
|---|
| 1281 | {
|
|---|
| 1282 | if (!strcmp(pszSymbol, "g_pSUPGlobalInfoPage"))
|
|---|
| 1283 | *pRCPtrValue = MMHyperR3ToRC(pVM, &pVM->tm.s.pvGIPRC);
|
|---|
| 1284 | //else if (..)
|
|---|
| 1285 | else
|
|---|
| 1286 | return VERR_SYMBOL_NOT_FOUND;
|
|---|
| 1287 | return VINF_SUCCESS;
|
|---|
| 1288 | }
|
|---|
| 1289 |
|
|---|
| 1290 |
|
|---|
| 1291 | /**
|
|---|
| 1292 | * Execute state save operation.
|
|---|
| 1293 | *
|
|---|
| 1294 | * @returns VBox status code.
|
|---|
| 1295 | * @param pVM The cross context VM structure.
|
|---|
| 1296 | * @param pSSM SSM operation handle.
|
|---|
| 1297 | */
|
|---|
| 1298 | static DECLCALLBACK(int) tmR3Save(PVM pVM, PSSMHANDLE pSSM)
|
|---|
| 1299 | {
|
|---|
| 1300 | LogFlow(("tmR3Save:\n"));
|
|---|
| 1301 | #ifdef VBOX_STRICT
|
|---|
| 1302 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
|---|
| 1303 | {
|
|---|
| 1304 | PVMCPU pVCpu = &pVM->aCpus[i];
|
|---|
| 1305 | Assert(!pVCpu->tm.s.fTSCTicking);
|
|---|
| 1306 | }
|
|---|
| 1307 | Assert(!pVM->tm.s.cVirtualTicking);
|
|---|
| 1308 | Assert(!pVM->tm.s.fVirtualSyncTicking);
|
|---|
| 1309 | Assert(!pVM->tm.s.cTSCsTicking);
|
|---|
| 1310 | #endif
|
|---|
| 1311 |
|
|---|
| 1312 | /*
|
|---|
| 1313 | * Save the virtual clocks.
|
|---|
| 1314 | */
|
|---|
| 1315 | /* the virtual clock. */
|
|---|
| 1316 | SSMR3PutU64(pSSM, TMCLOCK_FREQ_VIRTUAL);
|
|---|
| 1317 | SSMR3PutU64(pSSM, pVM->tm.s.u64Virtual);
|
|---|
| 1318 |
|
|---|
| 1319 | /* the virtual timer synchronous clock. */
|
|---|
| 1320 | SSMR3PutU64(pSSM, pVM->tm.s.u64VirtualSync);
|
|---|
| 1321 | SSMR3PutU64(pSSM, pVM->tm.s.offVirtualSync);
|
|---|
| 1322 | SSMR3PutU64(pSSM, pVM->tm.s.offVirtualSyncGivenUp);
|
|---|
| 1323 | SSMR3PutU64(pSSM, pVM->tm.s.u64VirtualSyncCatchUpPrev);
|
|---|
| 1324 | SSMR3PutBool(pSSM, pVM->tm.s.fVirtualSyncCatchUp);
|
|---|
| 1325 |
|
|---|
| 1326 | /* real time clock */
|
|---|
| 1327 | SSMR3PutU64(pSSM, TMCLOCK_FREQ_REAL);
|
|---|
| 1328 |
|
|---|
| 1329 | /* the cpu tick clock. */
|
|---|
| 1330 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
|---|
| 1331 | {
|
|---|
| 1332 | PVMCPU pVCpu = &pVM->aCpus[i];
|
|---|
| 1333 | SSMR3PutU64(pSSM, TMCpuTickGet(pVCpu));
|
|---|
| 1334 | }
|
|---|
| 1335 | return SSMR3PutU64(pSSM, pVM->tm.s.cTSCTicksPerSecond);
|
|---|
| 1336 | }
|
|---|
| 1337 |
|
|---|
| 1338 |
|
|---|
| 1339 | /**
|
|---|
| 1340 | * Execute state load operation.
|
|---|
| 1341 | *
|
|---|
| 1342 | * @returns VBox status code.
|
|---|
| 1343 | * @param pVM The cross context VM structure.
|
|---|
| 1344 | * @param pSSM SSM operation handle.
|
|---|
| 1345 | * @param uVersion Data layout version.
|
|---|
| 1346 | * @param uPass The data pass.
|
|---|
| 1347 | */
|
|---|
| 1348 | static DECLCALLBACK(int) tmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
|
|---|
| 1349 | {
|
|---|
| 1350 | LogFlow(("tmR3Load:\n"));
|
|---|
| 1351 |
|
|---|
| 1352 | Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
|
|---|
| 1353 | #ifdef VBOX_STRICT
|
|---|
| 1354 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
|---|
| 1355 | {
|
|---|
| 1356 | PVMCPU pVCpu = &pVM->aCpus[i];
|
|---|
| 1357 | Assert(!pVCpu->tm.s.fTSCTicking);
|
|---|
| 1358 | }
|
|---|
| 1359 | Assert(!pVM->tm.s.cVirtualTicking);
|
|---|
| 1360 | Assert(!pVM->tm.s.fVirtualSyncTicking);
|
|---|
| 1361 | Assert(!pVM->tm.s.cTSCsTicking);
|
|---|
| 1362 | #endif
|
|---|
| 1363 |
|
|---|
| 1364 | /*
|
|---|
| 1365 | * Validate version.
|
|---|
| 1366 | */
|
|---|
| 1367 | if (uVersion != TM_SAVED_STATE_VERSION)
|
|---|
| 1368 | {
|
|---|
| 1369 | AssertMsgFailed(("tmR3Load: Invalid version uVersion=%d!\n", uVersion));
|
|---|
| 1370 | return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
|
|---|
| 1371 | }
|
|---|
| 1372 |
|
|---|
| 1373 | /*
|
|---|
| 1374 | * Load the virtual clock.
|
|---|
| 1375 | */
|
|---|
| 1376 | pVM->tm.s.cVirtualTicking = 0;
|
|---|
| 1377 | /* the virtual clock. */
|
|---|
| 1378 | uint64_t u64Hz;
|
|---|
| 1379 | int rc = SSMR3GetU64(pSSM, &u64Hz);
|
|---|
| 1380 | if (RT_FAILURE(rc))
|
|---|
| 1381 | return rc;
|
|---|
| 1382 | if (u64Hz != TMCLOCK_FREQ_VIRTUAL)
|
|---|
| 1383 | {
|
|---|
| 1384 | AssertMsgFailed(("The virtual clock frequency differs! Saved: %'RU64 Binary: %'RU64\n",
|
|---|
| 1385 | u64Hz, TMCLOCK_FREQ_VIRTUAL));
|
|---|
| 1386 | return VERR_SSM_VIRTUAL_CLOCK_HZ;
|
|---|
| 1387 | }
|
|---|
| 1388 | SSMR3GetU64(pSSM, &pVM->tm.s.u64Virtual);
|
|---|
| 1389 | pVM->tm.s.u64VirtualOffset = 0;
|
|---|
| 1390 |
|
|---|
| 1391 | /* the virtual timer synchronous clock. */
|
|---|
| 1392 | pVM->tm.s.fVirtualSyncTicking = false;
|
|---|
| 1393 | uint64_t u64;
|
|---|
| 1394 | SSMR3GetU64(pSSM, &u64);
|
|---|
| 1395 | pVM->tm.s.u64VirtualSync = u64;
|
|---|
| 1396 | SSMR3GetU64(pSSM, &u64);
|
|---|
| 1397 | pVM->tm.s.offVirtualSync = u64;
|
|---|
| 1398 | SSMR3GetU64(pSSM, &u64);
|
|---|
| 1399 | pVM->tm.s.offVirtualSyncGivenUp = u64;
|
|---|
| 1400 | SSMR3GetU64(pSSM, &u64);
|
|---|
| 1401 | pVM->tm.s.u64VirtualSyncCatchUpPrev = u64;
|
|---|
| 1402 | bool f;
|
|---|
| 1403 | SSMR3GetBool(pSSM, &f);
|
|---|
| 1404 | pVM->tm.s.fVirtualSyncCatchUp = f;
|
|---|
| 1405 |
|
|---|
| 1406 | /* the real clock */
|
|---|
| 1407 | rc = SSMR3GetU64(pSSM, &u64Hz);
|
|---|
| 1408 | if (RT_FAILURE(rc))
|
|---|
| 1409 | return rc;
|
|---|
| 1410 | if (u64Hz != TMCLOCK_FREQ_REAL)
|
|---|
| 1411 | {
|
|---|
| 1412 | AssertMsgFailed(("The real clock frequency differs! Saved: %'RU64 Binary: %'RU64\n",
|
|---|
| 1413 | u64Hz, TMCLOCK_FREQ_REAL));
|
|---|
| 1414 | return VERR_SSM_VIRTUAL_CLOCK_HZ; /* misleading... */
|
|---|
| 1415 | }
|
|---|
| 1416 |
|
|---|
| 1417 | /* the cpu tick clock. */
|
|---|
| 1418 | pVM->tm.s.cTSCsTicking = 0;
|
|---|
| 1419 | pVM->tm.s.offTSCPause = 0;
|
|---|
| 1420 | pVM->tm.s.u64LastPausedTSC = 0;
|
|---|
| 1421 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
|---|
| 1422 | {
|
|---|
| 1423 | PVMCPU pVCpu = &pVM->aCpus[i];
|
|---|
| 1424 |
|
|---|
| 1425 | pVCpu->tm.s.fTSCTicking = false;
|
|---|
| 1426 | SSMR3GetU64(pSSM, &pVCpu->tm.s.u64TSC);
|
|---|
| 1427 | if (pVM->tm.s.u64LastPausedTSC < pVCpu->tm.s.u64TSC)
|
|---|
| 1428 | pVM->tm.s.u64LastPausedTSC = pVCpu->tm.s.u64TSC;
|
|---|
| 1429 |
|
|---|
| 1430 | if (pVM->tm.s.enmTSCMode == TMTSCMODE_REAL_TSC_OFFSET)
|
|---|
| 1431 | pVCpu->tm.s.offTSCRawSrc = 0; /** @todo TSC restore stuff and HWACC. */
|
|---|
| 1432 | }
|
|---|
| 1433 |
|
|---|
| 1434 | rc = SSMR3GetU64(pSSM, &u64Hz);
|
|---|
| 1435 | if (RT_FAILURE(rc))
|
|---|
| 1436 | return rc;
|
|---|
| 1437 | if (pVM->tm.s.enmTSCMode != TMTSCMODE_REAL_TSC_OFFSET)
|
|---|
| 1438 | pVM->tm.s.cTSCTicksPerSecond = u64Hz;
|
|---|
| 1439 |
|
|---|
| 1440 | LogRel(("TM: cTSCTicksPerSecond=%#RX64 (%'RU64) enmTSCMode=%d (%s) (state load)\n",
|
|---|
| 1441 | pVM->tm.s.cTSCTicksPerSecond, pVM->tm.s.cTSCTicksPerSecond, pVM->tm.s.enmTSCMode, tmR3GetTSCModeName(pVM)));
|
|---|
| 1442 |
|
|---|
| 1443 | /* Disabled as this isn't tested, also should this apply only if GIM is enabled etc. */
|
|---|
| 1444 | #if 0
|
|---|
| 1445 | /*
|
|---|
| 1446 | * If the current host TSC frequency is incompatible with what is in the
|
|---|
| 1447 | * saved state of the VM, fall back to emulating TSC and disallow TSC mode
|
|---|
| 1448 | * switches during VM runtime (e.g. by GIM).
|
|---|
| 1449 | */
|
|---|
| 1450 | if ( GIMIsEnabled(pVM)
|
|---|
| 1451 | || pVM->tm.s.enmTSCMode == TMTSCMODE_REAL_TSC_OFFSET)
|
|---|
| 1452 | {
|
|---|
| 1453 | uint64_t uGipCpuHz;
|
|---|
| 1454 | bool fRelax = RTSystemIsInsideVM();
|
|---|
| 1455 | bool fCompat = SUPIsTscFreqCompatible(pVM->tm.s.cTSCTicksPerSecond, &uGipCpuHz, fRelax);
|
|---|
| 1456 | if (!fCompat)
|
|---|
| 1457 | {
|
|---|
| 1458 | pVM->tm.s.enmTSCMode = TMTSCMODE_VIRT_TSC_EMULATED;
|
|---|
| 1459 | pVM->tm.s.fTSCModeSwitchAllowed = false;
|
|---|
| 1460 | if (g_pSUPGlobalInfoPage->u32Mode != SUPGIPMODE_ASYNC_TSC)
|
|---|
| 1461 | {
|
|---|
| 1462 | LogRel(("TM: TSC frequency incompatible! uGipCpuHz=%#RX64 (%'RU64) enmTSCMode=%d (%s) fTSCModeSwitchAllowed=%RTbool (state load)\n",
|
|---|
| 1463 | uGipCpuHz, uGipCpuHz, pVM->tm.s.enmTSCMode, tmR3GetTSCModeName(pVM), pVM->tm.s.fTSCModeSwitchAllowed));
|
|---|
| 1464 | }
|
|---|
| 1465 | else
|
|---|
| 1466 | {
|
|---|
| 1467 | LogRel(("TM: GIP is async, enmTSCMode=%d (%s) fTSCModeSwitchAllowed=%RTbool (state load)\n",
|
|---|
| 1468 | uGipCpuHz, uGipCpuHz, pVM->tm.s.enmTSCMode, tmR3GetTSCModeName(pVM), pVM->tm.s.fTSCModeSwitchAllowed));
|
|---|
| 1469 | }
|
|---|
| 1470 | }
|
|---|
| 1471 | }
|
|---|
| 1472 | #endif
|
|---|
| 1473 |
|
|---|
| 1474 | /*
|
|---|
| 1475 | * Make sure timers get rescheduled immediately.
|
|---|
| 1476 | */
|
|---|
| 1477 | PVMCPU pVCpuDst = &pVM->aCpus[pVM->tm.s.idTimerCpu];
|
|---|
| 1478 | VMCPU_FF_SET(pVCpuDst, VMCPU_FF_TIMER);
|
|---|
| 1479 |
|
|---|
| 1480 | return VINF_SUCCESS;
|
|---|
| 1481 | }
|
|---|
| 1482 |
|
|---|
| 1483 |
|
|---|
| 1484 | /**
|
|---|
| 1485 | * Internal TMR3TimerCreate worker.
|
|---|
| 1486 | *
|
|---|
| 1487 | * @returns VBox status code.
|
|---|
| 1488 | * @param pVM The cross context VM structure.
|
|---|
| 1489 | * @param enmClock The timer clock.
|
|---|
| 1490 | * @param pszDesc The timer description.
|
|---|
| 1491 | * @param ppTimer Where to store the timer pointer on success.
|
|---|
| 1492 | */
|
|---|
| 1493 | static int tmr3TimerCreate(PVM pVM, TMCLOCK enmClock, const char *pszDesc, PPTMTIMERR3 ppTimer)
|
|---|
| 1494 | {
|
|---|
| 1495 | VM_ASSERT_EMT(pVM);
|
|---|
| 1496 |
|
|---|
| 1497 | /*
|
|---|
| 1498 | * Allocate the timer.
|
|---|
| 1499 | */
|
|---|
| 1500 | PTMTIMERR3 pTimer = NULL;
|
|---|
| 1501 | if (pVM->tm.s.pFree && VM_IS_EMT(pVM))
|
|---|
| 1502 | {
|
|---|
| 1503 | pTimer = pVM->tm.s.pFree;
|
|---|
| 1504 | pVM->tm.s.pFree = pTimer->pBigNext;
|
|---|
| 1505 | Log3(("TM: Recycling timer %p, new free head %p.\n", pTimer, pTimer->pBigNext));
|
|---|
| 1506 | }
|
|---|
| 1507 |
|
|---|
| 1508 | if (!pTimer)
|
|---|
| 1509 | {
|
|---|
| 1510 | int rc = MMHyperAlloc(pVM, sizeof(*pTimer), 0, MM_TAG_TM, (void **)&pTimer);
|
|---|
| 1511 | if (RT_FAILURE(rc))
|
|---|
| 1512 | return rc;
|
|---|
| 1513 | Log3(("TM: Allocated new timer %p\n", pTimer));
|
|---|
| 1514 | }
|
|---|
| 1515 |
|
|---|
| 1516 | /*
|
|---|
| 1517 | * Initialize it.
|
|---|
| 1518 | */
|
|---|
| 1519 | pTimer->u64Expire = 0;
|
|---|
| 1520 | pTimer->enmClock = enmClock;
|
|---|
| 1521 | pTimer->pVMR3 = pVM;
|
|---|
| 1522 | pTimer->pVMR0 = pVM->pVMR0;
|
|---|
| 1523 | pTimer->pVMRC = pVM->pVMRC;
|
|---|
| 1524 | pTimer->enmState = TMTIMERSTATE_STOPPED;
|
|---|
| 1525 | pTimer->offScheduleNext = 0;
|
|---|
| 1526 | pTimer->offNext = 0;
|
|---|
| 1527 | pTimer->offPrev = 0;
|
|---|
| 1528 | pTimer->pvUser = NULL;
|
|---|
| 1529 | pTimer->pCritSect = NULL;
|
|---|
| 1530 | pTimer->pszDesc = pszDesc;
|
|---|
| 1531 |
|
|---|
| 1532 | /* insert into the list of created timers. */
|
|---|
| 1533 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1534 | pTimer->pBigPrev = NULL;
|
|---|
| 1535 | pTimer->pBigNext = pVM->tm.s.pCreated;
|
|---|
| 1536 | pVM->tm.s.pCreated = pTimer;
|
|---|
| 1537 | if (pTimer->pBigNext)
|
|---|
| 1538 | pTimer->pBigNext->pBigPrev = pTimer;
|
|---|
| 1539 | #ifdef VBOX_STRICT
|
|---|
| 1540 | tmTimerQueuesSanityChecks(pVM, "tmR3TimerCreate");
|
|---|
| 1541 | #endif
|
|---|
| 1542 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1543 |
|
|---|
| 1544 | *ppTimer = pTimer;
|
|---|
| 1545 | return VINF_SUCCESS;
|
|---|
| 1546 | }
|
|---|
| 1547 |
|
|---|
| 1548 |
|
|---|
| 1549 | /**
|
|---|
| 1550 | * Creates a device timer.
|
|---|
| 1551 | *
|
|---|
| 1552 | * @returns VBox status code.
|
|---|
| 1553 | * @param pVM The cross context VM structure.
|
|---|
| 1554 | * @param pDevIns Device instance.
|
|---|
| 1555 | * @param enmClock The clock to use on this timer.
|
|---|
| 1556 | * @param pfnCallback Callback function.
|
|---|
| 1557 | * @param pvUser The user argument to the callback.
|
|---|
| 1558 | * @param fFlags Timer creation flags, see grp_tm_timer_flags.
|
|---|
| 1559 | * @param pszDesc Pointer to description string which must stay around
|
|---|
| 1560 | * until the timer is fully destroyed (i.e. a bit after TMTimerDestroy()).
|
|---|
| 1561 | * @param ppTimer Where to store the timer on success.
|
|---|
| 1562 | */
|
|---|
| 1563 | VMM_INT_DECL(int) TMR3TimerCreateDevice(PVM pVM, PPDMDEVINS pDevIns, TMCLOCK enmClock,
|
|---|
| 1564 | PFNTMTIMERDEV pfnCallback, void *pvUser,
|
|---|
| 1565 | uint32_t fFlags, const char *pszDesc, PPTMTIMERR3 ppTimer)
|
|---|
| 1566 | {
|
|---|
| 1567 | AssertReturn(!(fFlags & ~(TMTIMER_FLAGS_NO_CRIT_SECT)), VERR_INVALID_PARAMETER);
|
|---|
| 1568 |
|
|---|
| 1569 | /*
|
|---|
| 1570 | * Allocate and init stuff.
|
|---|
| 1571 | */
|
|---|
| 1572 | int rc = tmr3TimerCreate(pVM, enmClock, pszDesc, ppTimer);
|
|---|
| 1573 | if (RT_SUCCESS(rc))
|
|---|
| 1574 | {
|
|---|
| 1575 | (*ppTimer)->enmType = TMTIMERTYPE_DEV;
|
|---|
| 1576 | (*ppTimer)->u.Dev.pfnTimer = pfnCallback;
|
|---|
| 1577 | (*ppTimer)->u.Dev.pDevIns = pDevIns;
|
|---|
| 1578 | (*ppTimer)->pvUser = pvUser;
|
|---|
| 1579 | if (!(fFlags & TMTIMER_FLAGS_NO_CRIT_SECT))
|
|---|
| 1580 | (*ppTimer)->pCritSect = PDMR3DevGetCritSect(pVM, pDevIns);
|
|---|
| 1581 | Log(("TM: Created device timer %p clock %d callback %p '%s'\n", (*ppTimer), enmClock, pfnCallback, pszDesc));
|
|---|
| 1582 | }
|
|---|
| 1583 |
|
|---|
| 1584 | return rc;
|
|---|
| 1585 | }
|
|---|
| 1586 |
|
|---|
| 1587 |
|
|---|
| 1588 |
|
|---|
| 1589 |
|
|---|
| 1590 | /**
|
|---|
| 1591 | * Creates a USB device timer.
|
|---|
| 1592 | *
|
|---|
| 1593 | * @returns VBox status code.
|
|---|
| 1594 | * @param pVM The cross context VM structure.
|
|---|
| 1595 | * @param pUsbIns The USB device instance.
|
|---|
| 1596 | * @param enmClock The clock to use on this timer.
|
|---|
| 1597 | * @param pfnCallback Callback function.
|
|---|
| 1598 | * @param pvUser The user argument to the callback.
|
|---|
| 1599 | * @param fFlags Timer creation flags, see grp_tm_timer_flags.
|
|---|
| 1600 | * @param pszDesc Pointer to description string which must stay around
|
|---|
| 1601 | * until the timer is fully destroyed (i.e. a bit after TMTimerDestroy()).
|
|---|
| 1602 | * @param ppTimer Where to store the timer on success.
|
|---|
| 1603 | */
|
|---|
| 1604 | VMM_INT_DECL(int) TMR3TimerCreateUsb(PVM pVM, PPDMUSBINS pUsbIns, TMCLOCK enmClock,
|
|---|
| 1605 | PFNTMTIMERUSB pfnCallback, void *pvUser,
|
|---|
| 1606 | uint32_t fFlags, const char *pszDesc, PPTMTIMERR3 ppTimer)
|
|---|
| 1607 | {
|
|---|
| 1608 | AssertReturn(!(fFlags & ~(TMTIMER_FLAGS_NO_CRIT_SECT)), VERR_INVALID_PARAMETER);
|
|---|
| 1609 |
|
|---|
| 1610 | /*
|
|---|
| 1611 | * Allocate and init stuff.
|
|---|
| 1612 | */
|
|---|
| 1613 | int rc = tmr3TimerCreate(pVM, enmClock, pszDesc, ppTimer);
|
|---|
| 1614 | if (RT_SUCCESS(rc))
|
|---|
| 1615 | {
|
|---|
| 1616 | (*ppTimer)->enmType = TMTIMERTYPE_USB;
|
|---|
| 1617 | (*ppTimer)->u.Usb.pfnTimer = pfnCallback;
|
|---|
| 1618 | (*ppTimer)->u.Usb.pUsbIns = pUsbIns;
|
|---|
| 1619 | (*ppTimer)->pvUser = pvUser;
|
|---|
| 1620 | //if (!(fFlags & TMTIMER_FLAGS_NO_CRIT_SECT))
|
|---|
| 1621 | //{
|
|---|
| 1622 | // if (pDevIns->pCritSectR3)
|
|---|
| 1623 | // (*ppTimer)->pCritSect = pUsbIns->pCritSectR3;
|
|---|
| 1624 | // else
|
|---|
| 1625 | // (*ppTimer)->pCritSect = IOMR3GetCritSect(pVM);
|
|---|
| 1626 | //}
|
|---|
| 1627 | Log(("TM: Created USB device timer %p clock %d callback %p '%s'\n", (*ppTimer), enmClock, pfnCallback, pszDesc));
|
|---|
| 1628 | }
|
|---|
| 1629 |
|
|---|
| 1630 | return rc;
|
|---|
| 1631 | }
|
|---|
| 1632 |
|
|---|
| 1633 |
|
|---|
| 1634 | /**
|
|---|
| 1635 | * Creates a driver timer.
|
|---|
| 1636 | *
|
|---|
| 1637 | * @returns VBox status code.
|
|---|
| 1638 | * @param pVM The cross context VM structure.
|
|---|
| 1639 | * @param pDrvIns Driver instance.
|
|---|
| 1640 | * @param enmClock The clock to use on this timer.
|
|---|
| 1641 | * @param pfnCallback Callback function.
|
|---|
| 1642 | * @param pvUser The user argument to the callback.
|
|---|
| 1643 | * @param fFlags Timer creation flags, see grp_tm_timer_flags.
|
|---|
| 1644 | * @param pszDesc Pointer to description string which must stay around
|
|---|
| 1645 | * until the timer is fully destroyed (i.e. a bit after TMTimerDestroy()).
|
|---|
| 1646 | * @param ppTimer Where to store the timer on success.
|
|---|
| 1647 | */
|
|---|
| 1648 | VMM_INT_DECL(int) TMR3TimerCreateDriver(PVM pVM, PPDMDRVINS pDrvIns, TMCLOCK enmClock, PFNTMTIMERDRV pfnCallback, void *pvUser,
|
|---|
| 1649 | uint32_t fFlags, const char *pszDesc, PPTMTIMERR3 ppTimer)
|
|---|
| 1650 | {
|
|---|
| 1651 | AssertReturn(!(fFlags & ~(TMTIMER_FLAGS_NO_CRIT_SECT)), VERR_INVALID_PARAMETER);
|
|---|
| 1652 |
|
|---|
| 1653 | /*
|
|---|
| 1654 | * Allocate and init stuff.
|
|---|
| 1655 | */
|
|---|
| 1656 | int rc = tmr3TimerCreate(pVM, enmClock, pszDesc, ppTimer);
|
|---|
| 1657 | if (RT_SUCCESS(rc))
|
|---|
| 1658 | {
|
|---|
| 1659 | (*ppTimer)->enmType = TMTIMERTYPE_DRV;
|
|---|
| 1660 | (*ppTimer)->u.Drv.pfnTimer = pfnCallback;
|
|---|
| 1661 | (*ppTimer)->u.Drv.pDrvIns = pDrvIns;
|
|---|
| 1662 | (*ppTimer)->pvUser = pvUser;
|
|---|
| 1663 | Log(("TM: Created device timer %p clock %d callback %p '%s'\n", (*ppTimer), enmClock, pfnCallback, pszDesc));
|
|---|
| 1664 | }
|
|---|
| 1665 |
|
|---|
| 1666 | return rc;
|
|---|
| 1667 | }
|
|---|
| 1668 |
|
|---|
| 1669 |
|
|---|
| 1670 | /**
|
|---|
| 1671 | * Creates an internal timer.
|
|---|
| 1672 | *
|
|---|
| 1673 | * @returns VBox status code.
|
|---|
| 1674 | * @param pVM The cross context VM structure.
|
|---|
| 1675 | * @param enmClock The clock to use on this timer.
|
|---|
| 1676 | * @param pfnCallback Callback function.
|
|---|
| 1677 | * @param pvUser User argument to be passed to the callback.
|
|---|
| 1678 | * @param pszDesc Pointer to description string which must stay around
|
|---|
| 1679 | * until the timer is fully destroyed (i.e. a bit after TMTimerDestroy()).
|
|---|
| 1680 | * @param ppTimer Where to store the timer on success.
|
|---|
| 1681 | */
|
|---|
| 1682 | VMMR3DECL(int) TMR3TimerCreateInternal(PVM pVM, TMCLOCK enmClock, PFNTMTIMERINT pfnCallback, void *pvUser, const char *pszDesc, PPTMTIMERR3 ppTimer)
|
|---|
| 1683 | {
|
|---|
| 1684 | /*
|
|---|
| 1685 | * Allocate and init stuff.
|
|---|
| 1686 | */
|
|---|
| 1687 | PTMTIMER pTimer;
|
|---|
| 1688 | int rc = tmr3TimerCreate(pVM, enmClock, pszDesc, &pTimer);
|
|---|
| 1689 | if (RT_SUCCESS(rc))
|
|---|
| 1690 | {
|
|---|
| 1691 | pTimer->enmType = TMTIMERTYPE_INTERNAL;
|
|---|
| 1692 | pTimer->u.Internal.pfnTimer = pfnCallback;
|
|---|
| 1693 | pTimer->pvUser = pvUser;
|
|---|
| 1694 | *ppTimer = pTimer;
|
|---|
| 1695 | Log(("TM: Created internal timer %p clock %d callback %p '%s'\n", pTimer, enmClock, pfnCallback, pszDesc));
|
|---|
| 1696 | }
|
|---|
| 1697 |
|
|---|
| 1698 | return rc;
|
|---|
| 1699 | }
|
|---|
| 1700 |
|
|---|
| 1701 | /**
|
|---|
| 1702 | * Creates an external timer.
|
|---|
| 1703 | *
|
|---|
| 1704 | * @returns Timer handle on success.
|
|---|
| 1705 | * @returns NULL on failure.
|
|---|
| 1706 | * @param pVM The cross context VM structure.
|
|---|
| 1707 | * @param enmClock The clock to use on this timer.
|
|---|
| 1708 | * @param pfnCallback Callback function.
|
|---|
| 1709 | * @param pvUser User argument.
|
|---|
| 1710 | * @param pszDesc Pointer to description string which must stay around
|
|---|
| 1711 | * until the timer is fully destroyed (i.e. a bit after TMTimerDestroy()).
|
|---|
| 1712 | */
|
|---|
| 1713 | VMMR3DECL(PTMTIMERR3) TMR3TimerCreateExternal(PVM pVM, TMCLOCK enmClock, PFNTMTIMEREXT pfnCallback, void *pvUser, const char *pszDesc)
|
|---|
| 1714 | {
|
|---|
| 1715 | /*
|
|---|
| 1716 | * Allocate and init stuff.
|
|---|
| 1717 | */
|
|---|
| 1718 | PTMTIMERR3 pTimer;
|
|---|
| 1719 | int rc = tmr3TimerCreate(pVM, enmClock, pszDesc, &pTimer);
|
|---|
| 1720 | if (RT_SUCCESS(rc))
|
|---|
| 1721 | {
|
|---|
| 1722 | pTimer->enmType = TMTIMERTYPE_EXTERNAL;
|
|---|
| 1723 | pTimer->u.External.pfnTimer = pfnCallback;
|
|---|
| 1724 | pTimer->pvUser = pvUser;
|
|---|
| 1725 | Log(("TM: Created external timer %p clock %d callback %p '%s'\n", pTimer, enmClock, pfnCallback, pszDesc));
|
|---|
| 1726 | return pTimer;
|
|---|
| 1727 | }
|
|---|
| 1728 |
|
|---|
| 1729 | return NULL;
|
|---|
| 1730 | }
|
|---|
| 1731 |
|
|---|
| 1732 |
|
|---|
| 1733 | /**
|
|---|
| 1734 | * Destroy a timer
|
|---|
| 1735 | *
|
|---|
| 1736 | * @returns VBox status code.
|
|---|
| 1737 | * @param pTimer Timer handle as returned by one of the create functions.
|
|---|
| 1738 | */
|
|---|
| 1739 | VMMR3DECL(int) TMR3TimerDestroy(PTMTIMER pTimer)
|
|---|
| 1740 | {
|
|---|
| 1741 | /*
|
|---|
| 1742 | * Be extra careful here.
|
|---|
| 1743 | */
|
|---|
| 1744 | if (!pTimer)
|
|---|
| 1745 | return VINF_SUCCESS;
|
|---|
| 1746 | AssertPtr(pTimer);
|
|---|
| 1747 | Assert((unsigned)pTimer->enmClock < (unsigned)TMCLOCK_MAX);
|
|---|
| 1748 |
|
|---|
| 1749 | PVM pVM = pTimer->CTX_SUFF(pVM);
|
|---|
| 1750 | PTMTIMERQUEUE pQueue = &pVM->tm.s.CTX_SUFF(paTimerQueues)[pTimer->enmClock];
|
|---|
| 1751 | bool fActive = false;
|
|---|
| 1752 | bool fPending = false;
|
|---|
| 1753 |
|
|---|
| 1754 | AssertMsg( !pTimer->pCritSect
|
|---|
| 1755 | || VMR3GetState(pVM) != VMSTATE_RUNNING
|
|---|
| 1756 | || PDMCritSectIsOwner(pTimer->pCritSect), ("%s\n", pTimer->pszDesc));
|
|---|
| 1757 |
|
|---|
| 1758 | /*
|
|---|
| 1759 | * The rest of the game happens behind the lock, just
|
|---|
| 1760 | * like create does. All the work is done here.
|
|---|
| 1761 | */
|
|---|
| 1762 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1763 | for (int cRetries = 1000;; cRetries--)
|
|---|
| 1764 | {
|
|---|
| 1765 | /*
|
|---|
| 1766 | * Change to the DESTROY state.
|
|---|
| 1767 | */
|
|---|
| 1768 | TMTIMERSTATE const enmState = pTimer->enmState;
|
|---|
| 1769 | Log2(("TMTimerDestroy: %p:{.enmState=%s, .pszDesc='%s'} cRetries=%d\n",
|
|---|
| 1770 | pTimer, tmTimerState(enmState), R3STRING(pTimer->pszDesc), cRetries));
|
|---|
| 1771 | switch (enmState)
|
|---|
| 1772 | {
|
|---|
| 1773 | case TMTIMERSTATE_STOPPED:
|
|---|
| 1774 | case TMTIMERSTATE_EXPIRED_DELIVER:
|
|---|
| 1775 | break;
|
|---|
| 1776 |
|
|---|
| 1777 | case TMTIMERSTATE_ACTIVE:
|
|---|
| 1778 | fActive = true;
|
|---|
| 1779 | break;
|
|---|
| 1780 |
|
|---|
| 1781 | case TMTIMERSTATE_PENDING_STOP:
|
|---|
| 1782 | case TMTIMERSTATE_PENDING_STOP_SCHEDULE:
|
|---|
| 1783 | case TMTIMERSTATE_PENDING_RESCHEDULE:
|
|---|
| 1784 | fActive = true;
|
|---|
| 1785 | fPending = true;
|
|---|
| 1786 | break;
|
|---|
| 1787 |
|
|---|
| 1788 | case TMTIMERSTATE_PENDING_SCHEDULE:
|
|---|
| 1789 | fPending = true;
|
|---|
| 1790 | break;
|
|---|
| 1791 |
|
|---|
| 1792 | /*
|
|---|
| 1793 | * This shouldn't happen as the caller should make sure there are no races.
|
|---|
| 1794 | */
|
|---|
| 1795 | case TMTIMERSTATE_EXPIRED_GET_UNLINK:
|
|---|
| 1796 | case TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE:
|
|---|
| 1797 | case TMTIMERSTATE_PENDING_RESCHEDULE_SET_EXPIRE:
|
|---|
| 1798 | AssertMsgFailed(("%p:.enmState=%s %s\n", pTimer, tmTimerState(enmState), pTimer->pszDesc));
|
|---|
| 1799 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1800 | if (!RTThreadYield())
|
|---|
| 1801 | RTThreadSleep(1);
|
|---|
| 1802 | AssertMsgReturn(cRetries > 0, ("Failed waiting for stable state. state=%d (%s)\n", pTimer->enmState, pTimer->pszDesc),
|
|---|
| 1803 | VERR_TM_UNSTABLE_STATE);
|
|---|
| 1804 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1805 | continue;
|
|---|
| 1806 |
|
|---|
| 1807 | /*
|
|---|
| 1808 | * Invalid states.
|
|---|
| 1809 | */
|
|---|
| 1810 | case TMTIMERSTATE_FREE:
|
|---|
| 1811 | case TMTIMERSTATE_DESTROY:
|
|---|
| 1812 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1813 | AssertLogRelMsgFailedReturn(("pTimer=%p %s\n", pTimer, tmTimerState(enmState)), VERR_TM_INVALID_STATE);
|
|---|
| 1814 |
|
|---|
| 1815 | default:
|
|---|
| 1816 | AssertMsgFailed(("Unknown timer state %d (%s)\n", enmState, R3STRING(pTimer->pszDesc)));
|
|---|
| 1817 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1818 | return VERR_TM_UNKNOWN_STATE;
|
|---|
| 1819 | }
|
|---|
| 1820 |
|
|---|
| 1821 | /*
|
|---|
| 1822 | * Try switch to the destroy state.
|
|---|
| 1823 | * This should always succeed as the caller should make sure there are no race.
|
|---|
| 1824 | */
|
|---|
| 1825 | bool fRc;
|
|---|
| 1826 | TM_TRY_SET_STATE(pTimer, TMTIMERSTATE_DESTROY, enmState, fRc);
|
|---|
| 1827 | if (fRc)
|
|---|
| 1828 | break;
|
|---|
| 1829 | AssertMsgFailed(("%p:.enmState=%s %s\n", pTimer, tmTimerState(enmState), pTimer->pszDesc));
|
|---|
| 1830 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1831 | AssertMsgReturn(cRetries > 0, ("Failed waiting for stable state. state=%d (%s)\n", pTimer->enmState, pTimer->pszDesc),
|
|---|
| 1832 | VERR_TM_UNSTABLE_STATE);
|
|---|
| 1833 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1834 | }
|
|---|
| 1835 |
|
|---|
| 1836 | /*
|
|---|
| 1837 | * Unlink from the active list.
|
|---|
| 1838 | */
|
|---|
| 1839 | if (fActive)
|
|---|
| 1840 | {
|
|---|
| 1841 | const PTMTIMER pPrev = TMTIMER_GET_PREV(pTimer);
|
|---|
| 1842 | const PTMTIMER pNext = TMTIMER_GET_NEXT(pTimer);
|
|---|
| 1843 | if (pPrev)
|
|---|
| 1844 | TMTIMER_SET_NEXT(pPrev, pNext);
|
|---|
| 1845 | else
|
|---|
| 1846 | {
|
|---|
| 1847 | TMTIMER_SET_HEAD(pQueue, pNext);
|
|---|
| 1848 | pQueue->u64Expire = pNext ? pNext->u64Expire : INT64_MAX;
|
|---|
| 1849 | }
|
|---|
| 1850 | if (pNext)
|
|---|
| 1851 | TMTIMER_SET_PREV(pNext, pPrev);
|
|---|
| 1852 | pTimer->offNext = 0;
|
|---|
| 1853 | pTimer->offPrev = 0;
|
|---|
| 1854 | }
|
|---|
| 1855 |
|
|---|
| 1856 | /*
|
|---|
| 1857 | * Unlink from the schedule list by running it.
|
|---|
| 1858 | */
|
|---|
| 1859 | if (fPending)
|
|---|
| 1860 | {
|
|---|
| 1861 | Log3(("TMR3TimerDestroy: tmTimerQueueSchedule\n"));
|
|---|
| 1862 | STAM_PROFILE_START(&pVM->tm.s.CTX_SUFF_Z(StatScheduleOne), a);
|
|---|
| 1863 | Assert(pQueue->offSchedule);
|
|---|
| 1864 | tmTimerQueueSchedule(pVM, pQueue);
|
|---|
| 1865 | STAM_PROFILE_STOP(&pVM->tm.s.CTX_SUFF_Z(StatScheduleOne), a);
|
|---|
| 1866 | }
|
|---|
| 1867 |
|
|---|
| 1868 | /*
|
|---|
| 1869 | * Read to move the timer from the created list and onto the free list.
|
|---|
| 1870 | */
|
|---|
| 1871 | Assert(!pTimer->offNext); Assert(!pTimer->offPrev); Assert(!pTimer->offScheduleNext);
|
|---|
| 1872 |
|
|---|
| 1873 | /* unlink from created list */
|
|---|
| 1874 | if (pTimer->pBigPrev)
|
|---|
| 1875 | pTimer->pBigPrev->pBigNext = pTimer->pBigNext;
|
|---|
| 1876 | else
|
|---|
| 1877 | pVM->tm.s.pCreated = pTimer->pBigNext;
|
|---|
| 1878 | if (pTimer->pBigNext)
|
|---|
| 1879 | pTimer->pBigNext->pBigPrev = pTimer->pBigPrev;
|
|---|
| 1880 | pTimer->pBigNext = 0;
|
|---|
| 1881 | pTimer->pBigPrev = 0;
|
|---|
| 1882 |
|
|---|
| 1883 | /* free */
|
|---|
| 1884 | Log2(("TM: Inserting %p into the free list ahead of %p!\n", pTimer, pVM->tm.s.pFree));
|
|---|
| 1885 | TM_SET_STATE(pTimer, TMTIMERSTATE_FREE);
|
|---|
| 1886 | pTimer->pBigNext = pVM->tm.s.pFree;
|
|---|
| 1887 | pVM->tm.s.pFree = pTimer;
|
|---|
| 1888 |
|
|---|
| 1889 | #ifdef VBOX_STRICT
|
|---|
| 1890 | tmTimerQueuesSanityChecks(pVM, "TMR3TimerDestroy");
|
|---|
| 1891 | #endif
|
|---|
| 1892 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1893 | return VINF_SUCCESS;
|
|---|
| 1894 | }
|
|---|
| 1895 |
|
|---|
| 1896 |
|
|---|
| 1897 | /**
|
|---|
| 1898 | * Destroy all timers owned by a device.
|
|---|
| 1899 | *
|
|---|
| 1900 | * @returns VBox status code.
|
|---|
| 1901 | * @param pVM The cross context VM structure.
|
|---|
| 1902 | * @param pDevIns Device which timers should be destroyed.
|
|---|
| 1903 | */
|
|---|
| 1904 | VMM_INT_DECL(int) TMR3TimerDestroyDevice(PVM pVM, PPDMDEVINS pDevIns)
|
|---|
| 1905 | {
|
|---|
| 1906 | LogFlow(("TMR3TimerDestroyDevice: pDevIns=%p\n", pDevIns));
|
|---|
| 1907 | if (!pDevIns)
|
|---|
| 1908 | return VERR_INVALID_PARAMETER;
|
|---|
| 1909 |
|
|---|
| 1910 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1911 | PTMTIMER pCur = pVM->tm.s.pCreated;
|
|---|
| 1912 | while (pCur)
|
|---|
| 1913 | {
|
|---|
| 1914 | PTMTIMER pDestroy = pCur;
|
|---|
| 1915 | pCur = pDestroy->pBigNext;
|
|---|
| 1916 | if ( pDestroy->enmType == TMTIMERTYPE_DEV
|
|---|
| 1917 | && pDestroy->u.Dev.pDevIns == pDevIns)
|
|---|
| 1918 | {
|
|---|
| 1919 | int rc = TMR3TimerDestroy(pDestroy);
|
|---|
| 1920 | AssertRC(rc);
|
|---|
| 1921 | }
|
|---|
| 1922 | }
|
|---|
| 1923 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1924 |
|
|---|
| 1925 | LogFlow(("TMR3TimerDestroyDevice: returns VINF_SUCCESS\n"));
|
|---|
| 1926 | return VINF_SUCCESS;
|
|---|
| 1927 | }
|
|---|
| 1928 |
|
|---|
| 1929 |
|
|---|
| 1930 | /**
|
|---|
| 1931 | * Destroy all timers owned by a USB device.
|
|---|
| 1932 | *
|
|---|
| 1933 | * @returns VBox status code.
|
|---|
| 1934 | * @param pVM The cross context VM structure.
|
|---|
| 1935 | * @param pUsbIns USB device which timers should be destroyed.
|
|---|
| 1936 | */
|
|---|
| 1937 | VMM_INT_DECL(int) TMR3TimerDestroyUsb(PVM pVM, PPDMUSBINS pUsbIns)
|
|---|
| 1938 | {
|
|---|
| 1939 | LogFlow(("TMR3TimerDestroyUsb: pUsbIns=%p\n", pUsbIns));
|
|---|
| 1940 | if (!pUsbIns)
|
|---|
| 1941 | return VERR_INVALID_PARAMETER;
|
|---|
| 1942 |
|
|---|
| 1943 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1944 | PTMTIMER pCur = pVM->tm.s.pCreated;
|
|---|
| 1945 | while (pCur)
|
|---|
| 1946 | {
|
|---|
| 1947 | PTMTIMER pDestroy = pCur;
|
|---|
| 1948 | pCur = pDestroy->pBigNext;
|
|---|
| 1949 | if ( pDestroy->enmType == TMTIMERTYPE_USB
|
|---|
| 1950 | && pDestroy->u.Usb.pUsbIns == pUsbIns)
|
|---|
| 1951 | {
|
|---|
| 1952 | int rc = TMR3TimerDestroy(pDestroy);
|
|---|
| 1953 | AssertRC(rc);
|
|---|
| 1954 | }
|
|---|
| 1955 | }
|
|---|
| 1956 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1957 |
|
|---|
| 1958 | LogFlow(("TMR3TimerDestroyUsb: returns VINF_SUCCESS\n"));
|
|---|
| 1959 | return VINF_SUCCESS;
|
|---|
| 1960 | }
|
|---|
| 1961 |
|
|---|
| 1962 |
|
|---|
| 1963 | /**
|
|---|
| 1964 | * Destroy all timers owned by a driver.
|
|---|
| 1965 | *
|
|---|
| 1966 | * @returns VBox status code.
|
|---|
| 1967 | * @param pVM The cross context VM structure.
|
|---|
| 1968 | * @param pDrvIns Driver which timers should be destroyed.
|
|---|
| 1969 | */
|
|---|
| 1970 | VMM_INT_DECL(int) TMR3TimerDestroyDriver(PVM pVM, PPDMDRVINS pDrvIns)
|
|---|
| 1971 | {
|
|---|
| 1972 | LogFlow(("TMR3TimerDestroyDriver: pDrvIns=%p\n", pDrvIns));
|
|---|
| 1973 | if (!pDrvIns)
|
|---|
| 1974 | return VERR_INVALID_PARAMETER;
|
|---|
| 1975 |
|
|---|
| 1976 | TM_LOCK_TIMERS(pVM);
|
|---|
| 1977 | PTMTIMER pCur = pVM->tm.s.pCreated;
|
|---|
| 1978 | while (pCur)
|
|---|
| 1979 | {
|
|---|
| 1980 | PTMTIMER pDestroy = pCur;
|
|---|
| 1981 | pCur = pDestroy->pBigNext;
|
|---|
| 1982 | if ( pDestroy->enmType == TMTIMERTYPE_DRV
|
|---|
| 1983 | && pDestroy->u.Drv.pDrvIns == pDrvIns)
|
|---|
| 1984 | {
|
|---|
| 1985 | int rc = TMR3TimerDestroy(pDestroy);
|
|---|
| 1986 | AssertRC(rc);
|
|---|
| 1987 | }
|
|---|
| 1988 | }
|
|---|
| 1989 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 1990 |
|
|---|
| 1991 | LogFlow(("TMR3TimerDestroyDriver: returns VINF_SUCCESS\n"));
|
|---|
| 1992 | return VINF_SUCCESS;
|
|---|
| 1993 | }
|
|---|
| 1994 |
|
|---|
| 1995 |
|
|---|
| 1996 | /**
|
|---|
| 1997 | * Internal function for getting the clock time.
|
|---|
| 1998 | *
|
|---|
| 1999 | * @returns clock time.
|
|---|
| 2000 | * @param pVM The cross context VM structure.
|
|---|
| 2001 | * @param enmClock The clock.
|
|---|
| 2002 | */
|
|---|
| 2003 | DECLINLINE(uint64_t) tmClock(PVM pVM, TMCLOCK enmClock)
|
|---|
| 2004 | {
|
|---|
| 2005 | switch (enmClock)
|
|---|
| 2006 | {
|
|---|
| 2007 | case TMCLOCK_VIRTUAL: return TMVirtualGet(pVM);
|
|---|
| 2008 | case TMCLOCK_VIRTUAL_SYNC: return TMVirtualSyncGet(pVM);
|
|---|
| 2009 | case TMCLOCK_REAL: return TMRealGet(pVM);
|
|---|
| 2010 | case TMCLOCK_TSC: return TMCpuTickGet(&pVM->aCpus[0] /* just take VCPU 0 */);
|
|---|
| 2011 | default:
|
|---|
| 2012 | AssertMsgFailed(("enmClock=%d\n", enmClock));
|
|---|
| 2013 | return ~(uint64_t)0;
|
|---|
| 2014 | }
|
|---|
| 2015 | }
|
|---|
| 2016 |
|
|---|
| 2017 |
|
|---|
| 2018 | /**
|
|---|
| 2019 | * Checks if the sync queue has one or more expired timers.
|
|---|
| 2020 | *
|
|---|
| 2021 | * @returns true / false.
|
|---|
| 2022 | *
|
|---|
| 2023 | * @param pVM The cross context VM structure.
|
|---|
| 2024 | * @param enmClock The queue.
|
|---|
| 2025 | */
|
|---|
| 2026 | DECLINLINE(bool) tmR3HasExpiredTimer(PVM pVM, TMCLOCK enmClock)
|
|---|
| 2027 | {
|
|---|
| 2028 | const uint64_t u64Expire = pVM->tm.s.CTX_SUFF(paTimerQueues)[enmClock].u64Expire;
|
|---|
| 2029 | return u64Expire != INT64_MAX && u64Expire <= tmClock(pVM, enmClock);
|
|---|
| 2030 | }
|
|---|
| 2031 |
|
|---|
| 2032 |
|
|---|
| 2033 | /**
|
|---|
| 2034 | * Checks for expired timers in all the queues.
|
|---|
| 2035 | *
|
|---|
| 2036 | * @returns true / false.
|
|---|
| 2037 | * @param pVM The cross context VM structure.
|
|---|
| 2038 | */
|
|---|
| 2039 | DECLINLINE(bool) tmR3AnyExpiredTimers(PVM pVM)
|
|---|
| 2040 | {
|
|---|
| 2041 | /*
|
|---|
| 2042 | * Combine the time calculation for the first two since we're not on EMT
|
|---|
| 2043 | * TMVirtualSyncGet only permits EMT.
|
|---|
| 2044 | */
|
|---|
| 2045 | uint64_t u64Now = TMVirtualGetNoCheck(pVM);
|
|---|
| 2046 | if (pVM->tm.s.CTX_SUFF(paTimerQueues)[TMCLOCK_VIRTUAL].u64Expire <= u64Now)
|
|---|
| 2047 | return true;
|
|---|
| 2048 | u64Now = pVM->tm.s.fVirtualSyncTicking
|
|---|
| 2049 | ? u64Now - pVM->tm.s.offVirtualSync
|
|---|
| 2050 | : pVM->tm.s.u64VirtualSync;
|
|---|
| 2051 | if (pVM->tm.s.CTX_SUFF(paTimerQueues)[TMCLOCK_VIRTUAL_SYNC].u64Expire <= u64Now)
|
|---|
| 2052 | return true;
|
|---|
| 2053 |
|
|---|
| 2054 | /*
|
|---|
| 2055 | * The remaining timers.
|
|---|
| 2056 | */
|
|---|
| 2057 | if (tmR3HasExpiredTimer(pVM, TMCLOCK_REAL))
|
|---|
| 2058 | return true;
|
|---|
| 2059 | if (tmR3HasExpiredTimer(pVM, TMCLOCK_TSC))
|
|---|
| 2060 | return true;
|
|---|
| 2061 | return false;
|
|---|
| 2062 | }
|
|---|
| 2063 |
|
|---|
| 2064 |
|
|---|
| 2065 | /**
|
|---|
| 2066 | * Schedule timer callback.
|
|---|
| 2067 | *
|
|---|
| 2068 | * @param pTimer Timer handle.
|
|---|
| 2069 | * @param pvUser Pointer to the VM.
|
|---|
| 2070 | * @thread Timer thread.
|
|---|
| 2071 | *
|
|---|
| 2072 | * @remark We cannot do the scheduling and queues running from a timer handler
|
|---|
| 2073 | * since it's not executing in EMT, and even if it was it would be async
|
|---|
| 2074 | * and we wouldn't know the state of the affairs.
|
|---|
| 2075 | * So, we'll just raise the timer FF and force any REM execution to exit.
|
|---|
| 2076 | */
|
|---|
| 2077 | static DECLCALLBACK(void) tmR3TimerCallback(PRTTIMER pTimer, void *pvUser, uint64_t /*iTick*/)
|
|---|
| 2078 | {
|
|---|
| 2079 | PVM pVM = (PVM)pvUser;
|
|---|
| 2080 | PVMCPU pVCpuDst = &pVM->aCpus[pVM->tm.s.idTimerCpu];
|
|---|
| 2081 | NOREF(pTimer);
|
|---|
| 2082 |
|
|---|
| 2083 | AssertCompile(TMCLOCK_MAX == 4);
|
|---|
| 2084 | STAM_COUNTER_INC(&pVM->tm.s.StatTimerCallback);
|
|---|
| 2085 |
|
|---|
| 2086 | #ifdef DEBUG_Sander /* very annoying, keep it private. */
|
|---|
| 2087 | if (VMCPU_FF_IS_SET(pVCpuDst, VMCPU_FF_TIMER))
|
|---|
| 2088 | Log(("tmR3TimerCallback: timer event still pending!!\n"));
|
|---|
| 2089 | #endif
|
|---|
| 2090 | if ( !VMCPU_FF_IS_SET(pVCpuDst, VMCPU_FF_TIMER)
|
|---|
| 2091 | && ( pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL_SYNC].offSchedule /** @todo FIXME - reconsider offSchedule as a reason for running the timer queues. */
|
|---|
| 2092 | || pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL].offSchedule
|
|---|
| 2093 | || pVM->tm.s.paTimerQueuesR3[TMCLOCK_REAL].offSchedule
|
|---|
| 2094 | || pVM->tm.s.paTimerQueuesR3[TMCLOCK_TSC].offSchedule
|
|---|
| 2095 | || tmR3AnyExpiredTimers(pVM)
|
|---|
| 2096 | )
|
|---|
| 2097 | && !VMCPU_FF_IS_SET(pVCpuDst, VMCPU_FF_TIMER)
|
|---|
| 2098 | && !pVM->tm.s.fRunningQueues
|
|---|
| 2099 | )
|
|---|
| 2100 | {
|
|---|
| 2101 | Log5(("TM(%u): FF: 0 -> 1\n", __LINE__));
|
|---|
| 2102 | VMCPU_FF_SET(pVCpuDst, VMCPU_FF_TIMER);
|
|---|
| 2103 | #ifdef VBOX_WITH_REM
|
|---|
| 2104 | REMR3NotifyTimerPending(pVM, pVCpuDst);
|
|---|
| 2105 | #endif
|
|---|
| 2106 | VMR3NotifyCpuFFU(pVCpuDst->pUVCpu, VMNOTIFYFF_FLAGS_DONE_REM | VMNOTIFYFF_FLAGS_POKE);
|
|---|
| 2107 | STAM_COUNTER_INC(&pVM->tm.s.StatTimerCallbackSetFF);
|
|---|
| 2108 | }
|
|---|
| 2109 | }
|
|---|
| 2110 |
|
|---|
| 2111 |
|
|---|
| 2112 | /**
|
|---|
| 2113 | * Schedules and runs any pending timers.
|
|---|
| 2114 | *
|
|---|
| 2115 | * This is normally called from a forced action handler in EMT.
|
|---|
| 2116 | *
|
|---|
| 2117 | * @param pVM The cross context VM structure.
|
|---|
| 2118 | *
|
|---|
| 2119 | * @thread EMT (actually EMT0, but we fend off the others)
|
|---|
| 2120 | */
|
|---|
| 2121 | VMMR3DECL(void) TMR3TimerQueuesDo(PVM pVM)
|
|---|
| 2122 | {
|
|---|
| 2123 | /*
|
|---|
| 2124 | * Only the dedicated timer EMT should do stuff here.
|
|---|
| 2125 | * (fRunningQueues is only used as an indicator.)
|
|---|
| 2126 | */
|
|---|
| 2127 | Assert(pVM->tm.s.idTimerCpu < pVM->cCpus);
|
|---|
| 2128 | PVMCPU pVCpuDst = &pVM->aCpus[pVM->tm.s.idTimerCpu];
|
|---|
| 2129 | if (VMMGetCpu(pVM) != pVCpuDst)
|
|---|
| 2130 | {
|
|---|
| 2131 | Assert(pVM->cCpus > 1);
|
|---|
| 2132 | return;
|
|---|
| 2133 | }
|
|---|
| 2134 | STAM_PROFILE_START(&pVM->tm.s.StatDoQueues, a);
|
|---|
| 2135 | Log2(("TMR3TimerQueuesDo:\n"));
|
|---|
| 2136 | Assert(!pVM->tm.s.fRunningQueues);
|
|---|
| 2137 | ASMAtomicWriteBool(&pVM->tm.s.fRunningQueues, true);
|
|---|
| 2138 | TM_LOCK_TIMERS(pVM);
|
|---|
| 2139 |
|
|---|
| 2140 | /*
|
|---|
| 2141 | * Process the queues.
|
|---|
| 2142 | */
|
|---|
| 2143 | AssertCompile(TMCLOCK_MAX == 4);
|
|---|
| 2144 |
|
|---|
| 2145 | /* TMCLOCK_VIRTUAL_SYNC (see also TMR3VirtualSyncFF) */
|
|---|
| 2146 | STAM_PROFILE_ADV_START(&pVM->tm.s.aStatDoQueues[TMCLOCK_VIRTUAL_SYNC], s1);
|
|---|
| 2147 | PDMCritSectEnter(&pVM->tm.s.VirtualSyncLock, VERR_IGNORED);
|
|---|
| 2148 | ASMAtomicWriteBool(&pVM->tm.s.fRunningVirtualSyncQueue, true);
|
|---|
| 2149 | VMCPU_FF_CLEAR(pVCpuDst, VMCPU_FF_TIMER); /* Clear the FF once we started working for real. */
|
|---|
| 2150 |
|
|---|
| 2151 | Assert(!pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL_SYNC].offSchedule);
|
|---|
| 2152 | tmR3TimerQueueRunVirtualSync(pVM);
|
|---|
| 2153 | if (pVM->tm.s.fVirtualSyncTicking) /** @todo move into tmR3TimerQueueRunVirtualSync - FIXME */
|
|---|
| 2154 | VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
|
|---|
| 2155 |
|
|---|
| 2156 | ASMAtomicWriteBool(&pVM->tm.s.fRunningVirtualSyncQueue, false);
|
|---|
| 2157 | PDMCritSectLeave(&pVM->tm.s.VirtualSyncLock);
|
|---|
| 2158 | STAM_PROFILE_ADV_STOP(&pVM->tm.s.aStatDoQueues[TMCLOCK_VIRTUAL_SYNC], s1);
|
|---|
| 2159 |
|
|---|
| 2160 | /* TMCLOCK_VIRTUAL */
|
|---|
| 2161 | STAM_PROFILE_ADV_START(&pVM->tm.s.aStatDoQueues[TMCLOCK_VIRTUAL], s2);
|
|---|
| 2162 | if (pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL].offSchedule)
|
|---|
| 2163 | tmTimerQueueSchedule(pVM, &pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL]);
|
|---|
| 2164 | tmR3TimerQueueRun(pVM, &pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL]);
|
|---|
| 2165 | STAM_PROFILE_ADV_STOP(&pVM->tm.s.aStatDoQueues[TMCLOCK_VIRTUAL], s2);
|
|---|
| 2166 |
|
|---|
| 2167 | /* TMCLOCK_TSC */
|
|---|
| 2168 | Assert(!pVM->tm.s.paTimerQueuesR3[TMCLOCK_TSC].offActive); /* not used */
|
|---|
| 2169 |
|
|---|
| 2170 | /* TMCLOCK_REAL */
|
|---|
| 2171 | STAM_PROFILE_ADV_START(&pVM->tm.s.aStatDoQueues[TMCLOCK_REAL], s3);
|
|---|
| 2172 | if (pVM->tm.s.paTimerQueuesR3[TMCLOCK_REAL].offSchedule)
|
|---|
| 2173 | tmTimerQueueSchedule(pVM, &pVM->tm.s.paTimerQueuesR3[TMCLOCK_REAL]);
|
|---|
| 2174 | tmR3TimerQueueRun(pVM, &pVM->tm.s.paTimerQueuesR3[TMCLOCK_REAL]);
|
|---|
| 2175 | STAM_PROFILE_ADV_STOP(&pVM->tm.s.aStatDoQueues[TMCLOCK_REAL], s3);
|
|---|
| 2176 |
|
|---|
| 2177 | #ifdef VBOX_STRICT
|
|---|
| 2178 | /* check that we didn't screw up. */
|
|---|
| 2179 | tmTimerQueuesSanityChecks(pVM, "TMR3TimerQueuesDo");
|
|---|
| 2180 | #endif
|
|---|
| 2181 |
|
|---|
| 2182 | /* done */
|
|---|
| 2183 | Log2(("TMR3TimerQueuesDo: returns void\n"));
|
|---|
| 2184 | ASMAtomicWriteBool(&pVM->tm.s.fRunningQueues, false);
|
|---|
| 2185 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 2186 | STAM_PROFILE_STOP(&pVM->tm.s.StatDoQueues, a);
|
|---|
| 2187 | }
|
|---|
| 2188 |
|
|---|
| 2189 | //RT_C_DECLS_BEGIN
|
|---|
| 2190 | //int iomLock(PVM pVM);
|
|---|
| 2191 | //void iomUnlock(PVM pVM);
|
|---|
| 2192 | //RT_C_DECLS_END
|
|---|
| 2193 |
|
|---|
| 2194 |
|
|---|
| 2195 | /**
|
|---|
| 2196 | * Schedules and runs any pending times in the specified queue.
|
|---|
| 2197 | *
|
|---|
| 2198 | * This is normally called from a forced action handler in EMT.
|
|---|
| 2199 | *
|
|---|
| 2200 | * @param pVM The cross context VM structure.
|
|---|
| 2201 | * @param pQueue The queue to run.
|
|---|
| 2202 | */
|
|---|
| 2203 | static void tmR3TimerQueueRun(PVM pVM, PTMTIMERQUEUE pQueue)
|
|---|
| 2204 | {
|
|---|
| 2205 | VM_ASSERT_EMT(pVM);
|
|---|
| 2206 |
|
|---|
| 2207 | /*
|
|---|
| 2208 | * Run timers.
|
|---|
| 2209 | *
|
|---|
| 2210 | * We check the clock once and run all timers which are ACTIVE
|
|---|
| 2211 | * and have an expire time less or equal to the time we read.
|
|---|
| 2212 | *
|
|---|
| 2213 | * N.B. A generic unlink must be applied since other threads
|
|---|
| 2214 | * are allowed to mess with any active timer at any time.
|
|---|
| 2215 | * However, we only allow EMT to handle EXPIRED_PENDING
|
|---|
| 2216 | * timers, thus enabling the timer handler function to
|
|---|
| 2217 | * arm the timer again.
|
|---|
| 2218 | */
|
|---|
| 2219 | PTMTIMER pNext = TMTIMER_GET_HEAD(pQueue);
|
|---|
| 2220 | if (!pNext)
|
|---|
| 2221 | return;
|
|---|
| 2222 | const uint64_t u64Now = tmClock(pVM, pQueue->enmClock);
|
|---|
| 2223 | while (pNext && pNext->u64Expire <= u64Now)
|
|---|
| 2224 | {
|
|---|
| 2225 | PTMTIMER pTimer = pNext;
|
|---|
| 2226 | pNext = TMTIMER_GET_NEXT(pTimer);
|
|---|
| 2227 | PPDMCRITSECT pCritSect = pTimer->pCritSect;
|
|---|
| 2228 | if (pCritSect)
|
|---|
| 2229 | PDMCritSectEnter(pCritSect, VERR_IGNORED);
|
|---|
| 2230 | Log2(("tmR3TimerQueueRun: %p:{.enmState=%s, .enmClock=%d, .enmType=%d, u64Expire=%llx (now=%llx) .pszDesc=%s}\n",
|
|---|
| 2231 | pTimer, tmTimerState(pTimer->enmState), pTimer->enmClock, pTimer->enmType, pTimer->u64Expire, u64Now, pTimer->pszDesc));
|
|---|
| 2232 | bool fRc;
|
|---|
| 2233 | TM_TRY_SET_STATE(pTimer, TMTIMERSTATE_EXPIRED_GET_UNLINK, TMTIMERSTATE_ACTIVE, fRc);
|
|---|
| 2234 | if (fRc)
|
|---|
| 2235 | {
|
|---|
| 2236 | Assert(!pTimer->offScheduleNext); /* this can trigger falsely */
|
|---|
| 2237 |
|
|---|
| 2238 | /* unlink */
|
|---|
| 2239 | const PTMTIMER pPrev = TMTIMER_GET_PREV(pTimer);
|
|---|
| 2240 | if (pPrev)
|
|---|
| 2241 | TMTIMER_SET_NEXT(pPrev, pNext);
|
|---|
| 2242 | else
|
|---|
| 2243 | {
|
|---|
| 2244 | TMTIMER_SET_HEAD(pQueue, pNext);
|
|---|
| 2245 | pQueue->u64Expire = pNext ? pNext->u64Expire : INT64_MAX;
|
|---|
| 2246 | }
|
|---|
| 2247 | if (pNext)
|
|---|
| 2248 | TMTIMER_SET_PREV(pNext, pPrev);
|
|---|
| 2249 | pTimer->offNext = 0;
|
|---|
| 2250 | pTimer->offPrev = 0;
|
|---|
| 2251 |
|
|---|
| 2252 | /* fire */
|
|---|
| 2253 | TM_SET_STATE(pTimer, TMTIMERSTATE_EXPIRED_DELIVER);
|
|---|
| 2254 | switch (pTimer->enmType)
|
|---|
| 2255 | {
|
|---|
| 2256 | case TMTIMERTYPE_DEV: pTimer->u.Dev.pfnTimer(pTimer->u.Dev.pDevIns, pTimer, pTimer->pvUser); break;
|
|---|
| 2257 | case TMTIMERTYPE_USB: pTimer->u.Usb.pfnTimer(pTimer->u.Usb.pUsbIns, pTimer, pTimer->pvUser); break;
|
|---|
| 2258 | case TMTIMERTYPE_DRV: pTimer->u.Drv.pfnTimer(pTimer->u.Drv.pDrvIns, pTimer, pTimer->pvUser); break;
|
|---|
| 2259 | case TMTIMERTYPE_INTERNAL: pTimer->u.Internal.pfnTimer(pVM, pTimer, pTimer->pvUser); break;
|
|---|
| 2260 | case TMTIMERTYPE_EXTERNAL: pTimer->u.External.pfnTimer(pTimer->pvUser); break;
|
|---|
| 2261 | default:
|
|---|
| 2262 | AssertMsgFailed(("Invalid timer type %d (%s)\n", pTimer->enmType, pTimer->pszDesc));
|
|---|
| 2263 | break;
|
|---|
| 2264 | }
|
|---|
| 2265 |
|
|---|
| 2266 | /* change the state if it wasn't changed already in the handler. */
|
|---|
| 2267 | TM_TRY_SET_STATE(pTimer, TMTIMERSTATE_STOPPED, TMTIMERSTATE_EXPIRED_DELIVER, fRc);
|
|---|
| 2268 | Log2(("tmR3TimerQueueRun: new state %s\n", tmTimerState(pTimer->enmState)));
|
|---|
| 2269 | }
|
|---|
| 2270 | if (pCritSect)
|
|---|
| 2271 | PDMCritSectLeave(pCritSect);
|
|---|
| 2272 | } /* run loop */
|
|---|
| 2273 | }
|
|---|
| 2274 |
|
|---|
| 2275 |
|
|---|
| 2276 | /**
|
|---|
| 2277 | * Schedules and runs any pending times in the timer queue for the
|
|---|
| 2278 | * synchronous virtual clock.
|
|---|
| 2279 | *
|
|---|
| 2280 | * This scheduling is a bit different from the other queues as it need
|
|---|
| 2281 | * to implement the special requirements of the timer synchronous virtual
|
|---|
| 2282 | * clock, thus this 2nd queue run function.
|
|---|
| 2283 | *
|
|---|
| 2284 | * @param pVM The cross context VM structure.
|
|---|
| 2285 | *
|
|---|
| 2286 | * @remarks The caller must the Virtual Sync lock. Owning the TM lock is no
|
|---|
| 2287 | * longer important.
|
|---|
| 2288 | */
|
|---|
| 2289 | static void tmR3TimerQueueRunVirtualSync(PVM pVM)
|
|---|
| 2290 | {
|
|---|
| 2291 | PTMTIMERQUEUE const pQueue = &pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL_SYNC];
|
|---|
| 2292 | VM_ASSERT_EMT(pVM);
|
|---|
| 2293 | Assert(PDMCritSectIsOwner(&pVM->tm.s.VirtualSyncLock));
|
|---|
| 2294 |
|
|---|
| 2295 | /*
|
|---|
| 2296 | * Any timers?
|
|---|
| 2297 | */
|
|---|
| 2298 | PTMTIMER pNext = TMTIMER_GET_HEAD(pQueue);
|
|---|
| 2299 | if (RT_UNLIKELY(!pNext))
|
|---|
| 2300 | {
|
|---|
| 2301 | Assert(pVM->tm.s.fVirtualSyncTicking || !pVM->tm.s.cVirtualTicking);
|
|---|
| 2302 | return;
|
|---|
| 2303 | }
|
|---|
| 2304 | STAM_COUNTER_INC(&pVM->tm.s.StatVirtualSyncRun);
|
|---|
| 2305 |
|
|---|
| 2306 | /*
|
|---|
| 2307 | * Calculate the time frame for which we will dispatch timers.
|
|---|
| 2308 | *
|
|---|
| 2309 | * We use a time frame ranging from the current sync time (which is most likely the
|
|---|
| 2310 | * same as the head timer) and some configurable period (100000ns) up towards the
|
|---|
| 2311 | * current virtual time. This period might also need to be restricted by the catch-up
|
|---|
| 2312 | * rate so frequent calls to this function won't accelerate the time too much, however
|
|---|
| 2313 | * this will be implemented at a later point if necessary.
|
|---|
| 2314 | *
|
|---|
| 2315 | * Without this frame we would 1) having to run timers much more frequently
|
|---|
| 2316 | * and 2) lag behind at a steady rate.
|
|---|
| 2317 | */
|
|---|
| 2318 | const uint64_t u64VirtualNow = TMVirtualGetNoCheck(pVM);
|
|---|
| 2319 | uint64_t const offSyncGivenUp = pVM->tm.s.offVirtualSyncGivenUp;
|
|---|
| 2320 | uint64_t u64Now;
|
|---|
| 2321 | if (!pVM->tm.s.fVirtualSyncTicking)
|
|---|
| 2322 | {
|
|---|
| 2323 | STAM_COUNTER_INC(&pVM->tm.s.StatVirtualSyncRunStoppedAlready);
|
|---|
| 2324 | u64Now = pVM->tm.s.u64VirtualSync;
|
|---|
| 2325 | Assert(u64Now <= pNext->u64Expire);
|
|---|
| 2326 | }
|
|---|
| 2327 | else
|
|---|
| 2328 | {
|
|---|
| 2329 | /* Calc 'now'. */
|
|---|
| 2330 | bool fStopCatchup = false;
|
|---|
| 2331 | bool fUpdateStuff = false;
|
|---|
| 2332 | uint64_t off = pVM->tm.s.offVirtualSync;
|
|---|
| 2333 | if (pVM->tm.s.fVirtualSyncCatchUp)
|
|---|
| 2334 | {
|
|---|
| 2335 | uint64_t u64Delta = u64VirtualNow - pVM->tm.s.u64VirtualSyncCatchUpPrev;
|
|---|
| 2336 | if (RT_LIKELY(!(u64Delta >> 32)))
|
|---|
| 2337 | {
|
|---|
| 2338 | uint64_t u64Sub = ASMMultU64ByU32DivByU32(u64Delta, pVM->tm.s.u32VirtualSyncCatchUpPercentage, 100);
|
|---|
| 2339 | if (off > u64Sub + offSyncGivenUp)
|
|---|
| 2340 | {
|
|---|
| 2341 | off -= u64Sub;
|
|---|
| 2342 | Log4(("TM: %'RU64/-%'8RU64: sub %'RU64 [tmR3TimerQueueRunVirtualSync]\n", u64VirtualNow - off, off - offSyncGivenUp, u64Sub));
|
|---|
| 2343 | }
|
|---|
| 2344 | else
|
|---|
| 2345 | {
|
|---|
| 2346 | STAM_PROFILE_ADV_STOP(&pVM->tm.s.StatVirtualSyncCatchup, c);
|
|---|
| 2347 | fStopCatchup = true;
|
|---|
| 2348 | off = offSyncGivenUp;
|
|---|
| 2349 | }
|
|---|
| 2350 | fUpdateStuff = true;
|
|---|
| 2351 | }
|
|---|
| 2352 | }
|
|---|
| 2353 | u64Now = u64VirtualNow - off;
|
|---|
| 2354 |
|
|---|
| 2355 | /* Adjust against last returned time. */
|
|---|
| 2356 | uint64_t u64Last = ASMAtomicUoReadU64(&pVM->tm.s.u64VirtualSync);
|
|---|
| 2357 | if (u64Last > u64Now)
|
|---|
| 2358 | {
|
|---|
| 2359 | u64Now = u64Last + 1;
|
|---|
| 2360 | STAM_COUNTER_INC(&pVM->tm.s.StatVirtualSyncGetAdjLast);
|
|---|
| 2361 | }
|
|---|
| 2362 |
|
|---|
| 2363 | /* Check if stopped by expired timer. */
|
|---|
| 2364 | uint64_t const u64Expire = pNext->u64Expire;
|
|---|
| 2365 | if (u64Now >= u64Expire)
|
|---|
| 2366 | {
|
|---|
| 2367 | STAM_COUNTER_INC(&pVM->tm.s.StatVirtualSyncRunStop);
|
|---|
| 2368 | u64Now = u64Expire;
|
|---|
| 2369 | ASMAtomicWriteU64(&pVM->tm.s.u64VirtualSync, u64Now);
|
|---|
| 2370 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncTicking, false);
|
|---|
| 2371 | Log4(("TM: %'RU64/-%'8RU64: exp tmr [tmR3TimerQueueRunVirtualSync]\n", u64Now, u64VirtualNow - u64Now - offSyncGivenUp));
|
|---|
| 2372 | }
|
|---|
| 2373 | else
|
|---|
| 2374 | {
|
|---|
| 2375 | ASMAtomicWriteU64(&pVM->tm.s.u64VirtualSync, u64Now);
|
|---|
| 2376 | if (fUpdateStuff)
|
|---|
| 2377 | {
|
|---|
| 2378 | ASMAtomicWriteU64(&pVM->tm.s.offVirtualSync, off);
|
|---|
| 2379 | ASMAtomicWriteU64(&pVM->tm.s.u64VirtualSyncCatchUpPrev, u64VirtualNow);
|
|---|
| 2380 | ASMAtomicWriteU64(&pVM->tm.s.u64VirtualSync, u64Now);
|
|---|
| 2381 | if (fStopCatchup)
|
|---|
| 2382 | {
|
|---|
| 2383 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncCatchUp, false);
|
|---|
| 2384 | Log4(("TM: %'RU64/0: caught up [tmR3TimerQueueRunVirtualSync]\n", u64VirtualNow));
|
|---|
| 2385 | }
|
|---|
| 2386 | }
|
|---|
| 2387 | }
|
|---|
| 2388 | }
|
|---|
| 2389 |
|
|---|
| 2390 | /* calc end of frame. */
|
|---|
| 2391 | uint64_t u64Max = u64Now + pVM->tm.s.u32VirtualSyncScheduleSlack;
|
|---|
| 2392 | if (u64Max > u64VirtualNow - offSyncGivenUp)
|
|---|
| 2393 | u64Max = u64VirtualNow - offSyncGivenUp;
|
|---|
| 2394 |
|
|---|
| 2395 | /* assert sanity */
|
|---|
| 2396 | Assert(u64Now <= u64VirtualNow - offSyncGivenUp);
|
|---|
| 2397 | Assert(u64Max <= u64VirtualNow - offSyncGivenUp);
|
|---|
| 2398 | Assert(u64Now <= u64Max);
|
|---|
| 2399 | Assert(offSyncGivenUp == pVM->tm.s.offVirtualSyncGivenUp);
|
|---|
| 2400 |
|
|---|
| 2401 | /*
|
|---|
| 2402 | * Process the expired timers moving the clock along as we progress.
|
|---|
| 2403 | */
|
|---|
| 2404 | #ifdef VBOX_STRICT
|
|---|
| 2405 | uint64_t u64Prev = u64Now; NOREF(u64Prev);
|
|---|
| 2406 | #endif
|
|---|
| 2407 | while (pNext && pNext->u64Expire <= u64Max)
|
|---|
| 2408 | {
|
|---|
| 2409 | /* Advance */
|
|---|
| 2410 | PTMTIMER pTimer = pNext;
|
|---|
| 2411 | pNext = TMTIMER_GET_NEXT(pTimer);
|
|---|
| 2412 |
|
|---|
| 2413 | /* Take the associated lock. */
|
|---|
| 2414 | PPDMCRITSECT pCritSect = pTimer->pCritSect;
|
|---|
| 2415 | if (pCritSect)
|
|---|
| 2416 | PDMCritSectEnter(pCritSect, VERR_IGNORED);
|
|---|
| 2417 |
|
|---|
| 2418 | Log2(("tmR3TimerQueueRun: %p:{.enmState=%s, .enmClock=%d, .enmType=%d, u64Expire=%llx (now=%llx) .pszDesc=%s}\n",
|
|---|
| 2419 | pTimer, tmTimerState(pTimer->enmState), pTimer->enmClock, pTimer->enmType, pTimer->u64Expire, u64Now, pTimer->pszDesc));
|
|---|
| 2420 |
|
|---|
| 2421 | /* Advance the clock - don't permit timers to be out of order or armed
|
|---|
| 2422 | in the 'past'. */
|
|---|
| 2423 | #ifdef VBOX_STRICT
|
|---|
| 2424 | AssertMsg(pTimer->u64Expire >= u64Prev, ("%'RU64 < %'RU64 %s\n", pTimer->u64Expire, u64Prev, pTimer->pszDesc));
|
|---|
| 2425 | u64Prev = pTimer->u64Expire;
|
|---|
| 2426 | #endif
|
|---|
| 2427 | ASMAtomicWriteU64(&pVM->tm.s.u64VirtualSync, pTimer->u64Expire);
|
|---|
| 2428 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncTicking, false);
|
|---|
| 2429 |
|
|---|
| 2430 | /* Unlink it, change the state and do the callout. */
|
|---|
| 2431 | tmTimerQueueUnlinkActive(pQueue, pTimer);
|
|---|
| 2432 | TM_SET_STATE(pTimer, TMTIMERSTATE_EXPIRED_DELIVER);
|
|---|
| 2433 | switch (pTimer->enmType)
|
|---|
| 2434 | {
|
|---|
| 2435 | case TMTIMERTYPE_DEV: pTimer->u.Dev.pfnTimer(pTimer->u.Dev.pDevIns, pTimer, pTimer->pvUser); break;
|
|---|
| 2436 | case TMTIMERTYPE_USB: pTimer->u.Usb.pfnTimer(pTimer->u.Usb.pUsbIns, pTimer, pTimer->pvUser); break;
|
|---|
| 2437 | case TMTIMERTYPE_DRV: pTimer->u.Drv.pfnTimer(pTimer->u.Drv.pDrvIns, pTimer, pTimer->pvUser); break;
|
|---|
| 2438 | case TMTIMERTYPE_INTERNAL: pTimer->u.Internal.pfnTimer(pVM, pTimer, pTimer->pvUser); break;
|
|---|
| 2439 | case TMTIMERTYPE_EXTERNAL: pTimer->u.External.pfnTimer(pTimer->pvUser); break;
|
|---|
| 2440 | default:
|
|---|
| 2441 | AssertMsgFailed(("Invalid timer type %d (%s)\n", pTimer->enmType, pTimer->pszDesc));
|
|---|
| 2442 | break;
|
|---|
| 2443 | }
|
|---|
| 2444 |
|
|---|
| 2445 | /* Change the state if it wasn't changed already in the handler.
|
|---|
| 2446 | Reset the Hz hint too since this is the same as TMTimerStop. */
|
|---|
| 2447 | bool fRc;
|
|---|
| 2448 | TM_TRY_SET_STATE(pTimer, TMTIMERSTATE_STOPPED, TMTIMERSTATE_EXPIRED_DELIVER, fRc);
|
|---|
| 2449 | if (fRc && pTimer->uHzHint)
|
|---|
| 2450 | {
|
|---|
| 2451 | if (pTimer->uHzHint >= pVM->tm.s.uMaxHzHint)
|
|---|
| 2452 | ASMAtomicWriteBool(&pVM->tm.s.fHzHintNeedsUpdating, true);
|
|---|
| 2453 | pTimer->uHzHint = 0;
|
|---|
| 2454 | }
|
|---|
| 2455 | Log2(("tmR3TimerQueueRun: new state %s\n", tmTimerState(pTimer->enmState)));
|
|---|
| 2456 |
|
|---|
| 2457 | /* Leave the associated lock. */
|
|---|
| 2458 | if (pCritSect)
|
|---|
| 2459 | PDMCritSectLeave(pCritSect);
|
|---|
| 2460 | } /* run loop */
|
|---|
| 2461 |
|
|---|
| 2462 |
|
|---|
| 2463 | /*
|
|---|
| 2464 | * Restart the clock if it was stopped to serve any timers,
|
|---|
| 2465 | * and start/adjust catch-up if necessary.
|
|---|
| 2466 | */
|
|---|
| 2467 | if ( !pVM->tm.s.fVirtualSyncTicking
|
|---|
| 2468 | && pVM->tm.s.cVirtualTicking)
|
|---|
| 2469 | {
|
|---|
| 2470 | STAM_COUNTER_INC(&pVM->tm.s.StatVirtualSyncRunRestart);
|
|---|
| 2471 |
|
|---|
| 2472 | /* calc the slack we've handed out. */
|
|---|
| 2473 | const uint64_t u64VirtualNow2 = TMVirtualGetNoCheck(pVM);
|
|---|
| 2474 | Assert(u64VirtualNow2 >= u64VirtualNow);
|
|---|
| 2475 | AssertMsg(pVM->tm.s.u64VirtualSync >= u64Now, ("%'RU64 < %'RU64\n", pVM->tm.s.u64VirtualSync, u64Now));
|
|---|
| 2476 | const uint64_t offSlack = pVM->tm.s.u64VirtualSync - u64Now;
|
|---|
| 2477 | STAM_STATS({
|
|---|
| 2478 | if (offSlack)
|
|---|
| 2479 | {
|
|---|
| 2480 | PSTAMPROFILE p = &pVM->tm.s.StatVirtualSyncRunSlack;
|
|---|
| 2481 | p->cPeriods++;
|
|---|
| 2482 | p->cTicks += offSlack;
|
|---|
| 2483 | if (p->cTicksMax < offSlack) p->cTicksMax = offSlack;
|
|---|
| 2484 | if (p->cTicksMin > offSlack) p->cTicksMin = offSlack;
|
|---|
| 2485 | }
|
|---|
| 2486 | });
|
|---|
| 2487 |
|
|---|
| 2488 | /* Let the time run a little bit while we were busy running timers(?). */
|
|---|
| 2489 | uint64_t u64Elapsed;
|
|---|
| 2490 | #define MAX_ELAPSED 30000U /* ns */
|
|---|
| 2491 | if (offSlack > MAX_ELAPSED)
|
|---|
| 2492 | u64Elapsed = 0;
|
|---|
| 2493 | else
|
|---|
| 2494 | {
|
|---|
| 2495 | u64Elapsed = u64VirtualNow2 - u64VirtualNow;
|
|---|
| 2496 | if (u64Elapsed > MAX_ELAPSED)
|
|---|
| 2497 | u64Elapsed = MAX_ELAPSED;
|
|---|
| 2498 | u64Elapsed = u64Elapsed > offSlack ? u64Elapsed - offSlack : 0;
|
|---|
| 2499 | }
|
|---|
| 2500 | #undef MAX_ELAPSED
|
|---|
| 2501 |
|
|---|
| 2502 | /* Calc the current offset. */
|
|---|
| 2503 | uint64_t offNew = u64VirtualNow2 - pVM->tm.s.u64VirtualSync - u64Elapsed;
|
|---|
| 2504 | Assert(!(offNew & RT_BIT_64(63)));
|
|---|
| 2505 | uint64_t offLag = offNew - pVM->tm.s.offVirtualSyncGivenUp;
|
|---|
| 2506 | Assert(!(offLag & RT_BIT_64(63)));
|
|---|
| 2507 |
|
|---|
| 2508 | /*
|
|---|
| 2509 | * Deal with starting, adjusting and stopping catchup.
|
|---|
| 2510 | */
|
|---|
| 2511 | if (pVM->tm.s.fVirtualSyncCatchUp)
|
|---|
| 2512 | {
|
|---|
| 2513 | if (offLag <= pVM->tm.s.u64VirtualSyncCatchUpStopThreshold)
|
|---|
| 2514 | {
|
|---|
| 2515 | /* stop */
|
|---|
| 2516 | STAM_PROFILE_ADV_STOP(&pVM->tm.s.StatVirtualSyncCatchup, c);
|
|---|
| 2517 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncCatchUp, false);
|
|---|
| 2518 | Log4(("TM: %'RU64/-%'8RU64: caught up [pt]\n", u64VirtualNow2 - offNew, offLag));
|
|---|
| 2519 | }
|
|---|
| 2520 | else if (offLag <= pVM->tm.s.u64VirtualSyncCatchUpGiveUpThreshold)
|
|---|
| 2521 | {
|
|---|
| 2522 | /* adjust */
|
|---|
| 2523 | unsigned i = 0;
|
|---|
| 2524 | while ( i + 1 < RT_ELEMENTS(pVM->tm.s.aVirtualSyncCatchUpPeriods)
|
|---|
| 2525 | && offLag >= pVM->tm.s.aVirtualSyncCatchUpPeriods[i + 1].u64Start)
|
|---|
| 2526 | i++;
|
|---|
| 2527 | if (pVM->tm.s.u32VirtualSyncCatchUpPercentage < pVM->tm.s.aVirtualSyncCatchUpPeriods[i].u32Percentage)
|
|---|
| 2528 | {
|
|---|
| 2529 | STAM_COUNTER_INC(&pVM->tm.s.aStatVirtualSyncCatchupAdjust[i]);
|
|---|
| 2530 | ASMAtomicWriteU32(&pVM->tm.s.u32VirtualSyncCatchUpPercentage, pVM->tm.s.aVirtualSyncCatchUpPeriods[i].u32Percentage);
|
|---|
| 2531 | Log4(("TM: %'RU64/%'8RU64: adj %u%%\n", u64VirtualNow2 - offNew, offLag, pVM->tm.s.u32VirtualSyncCatchUpPercentage));
|
|---|
| 2532 | }
|
|---|
| 2533 | pVM->tm.s.u64VirtualSyncCatchUpPrev = u64VirtualNow2;
|
|---|
| 2534 | }
|
|---|
| 2535 | else
|
|---|
| 2536 | {
|
|---|
| 2537 | /* give up */
|
|---|
| 2538 | STAM_COUNTER_INC(&pVM->tm.s.StatVirtualSyncGiveUp);
|
|---|
| 2539 | STAM_PROFILE_ADV_STOP(&pVM->tm.s.StatVirtualSyncCatchup, c);
|
|---|
| 2540 | ASMAtomicWriteU64((uint64_t volatile *)&pVM->tm.s.offVirtualSyncGivenUp, offNew);
|
|---|
| 2541 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncCatchUp, false);
|
|---|
| 2542 | Log4(("TM: %'RU64/%'8RU64: give up %u%%\n", u64VirtualNow2 - offNew, offLag, pVM->tm.s.u32VirtualSyncCatchUpPercentage));
|
|---|
| 2543 | LogRel(("TM: Giving up catch-up attempt at a %'RU64 ns lag; new total: %'RU64 ns\n", offLag, offNew));
|
|---|
| 2544 | }
|
|---|
| 2545 | }
|
|---|
| 2546 | else if (offLag >= pVM->tm.s.aVirtualSyncCatchUpPeriods[0].u64Start)
|
|---|
| 2547 | {
|
|---|
| 2548 | if (offLag <= pVM->tm.s.u64VirtualSyncCatchUpGiveUpThreshold)
|
|---|
| 2549 | {
|
|---|
| 2550 | /* start */
|
|---|
| 2551 | STAM_PROFILE_ADV_START(&pVM->tm.s.StatVirtualSyncCatchup, c);
|
|---|
| 2552 | unsigned i = 0;
|
|---|
| 2553 | while ( i + 1 < RT_ELEMENTS(pVM->tm.s.aVirtualSyncCatchUpPeriods)
|
|---|
| 2554 | && offLag >= pVM->tm.s.aVirtualSyncCatchUpPeriods[i + 1].u64Start)
|
|---|
| 2555 | i++;
|
|---|
| 2556 | STAM_COUNTER_INC(&pVM->tm.s.aStatVirtualSyncCatchupInitial[i]);
|
|---|
| 2557 | ASMAtomicWriteU32(&pVM->tm.s.u32VirtualSyncCatchUpPercentage, pVM->tm.s.aVirtualSyncCatchUpPeriods[i].u32Percentage);
|
|---|
| 2558 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncCatchUp, true);
|
|---|
| 2559 | Log4(("TM: %'RU64/%'8RU64: catch-up %u%%\n", u64VirtualNow2 - offNew, offLag, pVM->tm.s.u32VirtualSyncCatchUpPercentage));
|
|---|
| 2560 | }
|
|---|
| 2561 | else
|
|---|
| 2562 | {
|
|---|
| 2563 | /* don't bother */
|
|---|
| 2564 | STAM_COUNTER_INC(&pVM->tm.s.StatVirtualSyncGiveUpBeforeStarting);
|
|---|
| 2565 | ASMAtomicWriteU64((uint64_t volatile *)&pVM->tm.s.offVirtualSyncGivenUp, offNew);
|
|---|
| 2566 | Log4(("TM: %'RU64/%'8RU64: give up\n", u64VirtualNow2 - offNew, offLag));
|
|---|
| 2567 | LogRel(("TM: Not bothering to attempt catching up a %'RU64 ns lag; new total: %'RU64\n", offLag, offNew));
|
|---|
| 2568 | }
|
|---|
| 2569 | }
|
|---|
| 2570 |
|
|---|
| 2571 | /*
|
|---|
| 2572 | * Update the offset and restart the clock.
|
|---|
| 2573 | */
|
|---|
| 2574 | Assert(!(offNew & RT_BIT_64(63)));
|
|---|
| 2575 | ASMAtomicWriteU64(&pVM->tm.s.offVirtualSync, offNew);
|
|---|
| 2576 | ASMAtomicWriteBool(&pVM->tm.s.fVirtualSyncTicking, true);
|
|---|
| 2577 | }
|
|---|
| 2578 | }
|
|---|
| 2579 |
|
|---|
| 2580 |
|
|---|
| 2581 | /**
|
|---|
| 2582 | * Deals with stopped Virtual Sync clock.
|
|---|
| 2583 | *
|
|---|
| 2584 | * This is called by the forced action flag handling code in EM when it
|
|---|
| 2585 | * encounters the VM_FF_TM_VIRTUAL_SYNC flag. It is called by all VCPUs and they
|
|---|
| 2586 | * will block on the VirtualSyncLock until the pending timers has been executed
|
|---|
| 2587 | * and the clock restarted.
|
|---|
| 2588 | *
|
|---|
| 2589 | * @param pVM The cross context VM structure.
|
|---|
| 2590 | * @param pVCpu The cross context virtual CPU structure of the calling EMT.
|
|---|
| 2591 | *
|
|---|
| 2592 | * @thread EMTs
|
|---|
| 2593 | */
|
|---|
| 2594 | VMMR3_INT_DECL(void) TMR3VirtualSyncFF(PVM pVM, PVMCPU pVCpu)
|
|---|
| 2595 | {
|
|---|
| 2596 | Log2(("TMR3VirtualSyncFF:\n"));
|
|---|
| 2597 |
|
|---|
| 2598 | /*
|
|---|
| 2599 | * The EMT doing the timers is diverted to them.
|
|---|
| 2600 | */
|
|---|
| 2601 | if (pVCpu->idCpu == pVM->tm.s.idTimerCpu)
|
|---|
| 2602 | TMR3TimerQueuesDo(pVM);
|
|---|
| 2603 | /*
|
|---|
| 2604 | * The other EMTs will block on the virtual sync lock and the first owner
|
|---|
| 2605 | * will run the queue and thus restarting the clock.
|
|---|
| 2606 | *
|
|---|
| 2607 | * Note! This is very suboptimal code wrt to resuming execution when there
|
|---|
| 2608 | * are more than two Virtual CPUs, since they will all have to enter
|
|---|
| 2609 | * the critical section one by one. But it's a very simple solution
|
|---|
| 2610 | * which will have to do the job for now.
|
|---|
| 2611 | */
|
|---|
| 2612 | else
|
|---|
| 2613 | {
|
|---|
| 2614 | STAM_PROFILE_START(&pVM->tm.s.StatVirtualSyncFF, a);
|
|---|
| 2615 | PDMCritSectEnter(&pVM->tm.s.VirtualSyncLock, VERR_IGNORED);
|
|---|
| 2616 | if (pVM->tm.s.fVirtualSyncTicking)
|
|---|
| 2617 | {
|
|---|
| 2618 | STAM_PROFILE_STOP(&pVM->tm.s.StatVirtualSyncFF, a); /* before the unlock! */
|
|---|
| 2619 | PDMCritSectLeave(&pVM->tm.s.VirtualSyncLock);
|
|---|
| 2620 | Log2(("TMR3VirtualSyncFF: ticking\n"));
|
|---|
| 2621 | }
|
|---|
| 2622 | else
|
|---|
| 2623 | {
|
|---|
| 2624 | PDMCritSectLeave(&pVM->tm.s.VirtualSyncLock);
|
|---|
| 2625 |
|
|---|
| 2626 | /* try run it. */
|
|---|
| 2627 | TM_LOCK_TIMERS(pVM);
|
|---|
| 2628 | PDMCritSectEnter(&pVM->tm.s.VirtualSyncLock, VERR_IGNORED);
|
|---|
| 2629 | if (pVM->tm.s.fVirtualSyncTicking)
|
|---|
| 2630 | Log2(("TMR3VirtualSyncFF: ticking (2)\n"));
|
|---|
| 2631 | else
|
|---|
| 2632 | {
|
|---|
| 2633 | ASMAtomicWriteBool(&pVM->tm.s.fRunningVirtualSyncQueue, true);
|
|---|
| 2634 | Log2(("TMR3VirtualSyncFF: running queue\n"));
|
|---|
| 2635 |
|
|---|
| 2636 | Assert(!pVM->tm.s.paTimerQueuesR3[TMCLOCK_VIRTUAL_SYNC].offSchedule);
|
|---|
| 2637 | tmR3TimerQueueRunVirtualSync(pVM);
|
|---|
| 2638 | if (pVM->tm.s.fVirtualSyncTicking) /** @todo move into tmR3TimerQueueRunVirtualSync - FIXME */
|
|---|
| 2639 | VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
|
|---|
| 2640 |
|
|---|
| 2641 | ASMAtomicWriteBool(&pVM->tm.s.fRunningVirtualSyncQueue, false);
|
|---|
| 2642 | }
|
|---|
| 2643 | STAM_PROFILE_STOP(&pVM->tm.s.StatVirtualSyncFF, a); /* before the unlock! */
|
|---|
| 2644 | PDMCritSectLeave(&pVM->tm.s.VirtualSyncLock);
|
|---|
| 2645 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 2646 | }
|
|---|
| 2647 | }
|
|---|
| 2648 | }
|
|---|
| 2649 |
|
|---|
| 2650 |
|
|---|
| 2651 | /** @name Saved state values
|
|---|
| 2652 | * @{ */
|
|---|
| 2653 | #define TMTIMERSTATE_SAVED_PENDING_STOP 4
|
|---|
| 2654 | #define TMTIMERSTATE_SAVED_PENDING_SCHEDULE 7
|
|---|
| 2655 | /** @} */
|
|---|
| 2656 |
|
|---|
| 2657 |
|
|---|
| 2658 | /**
|
|---|
| 2659 | * Saves the state of a timer to a saved state.
|
|---|
| 2660 | *
|
|---|
| 2661 | * @returns VBox status code.
|
|---|
| 2662 | * @param pTimer Timer to save.
|
|---|
| 2663 | * @param pSSM Save State Manager handle.
|
|---|
| 2664 | */
|
|---|
| 2665 | VMMR3DECL(int) TMR3TimerSave(PTMTIMERR3 pTimer, PSSMHANDLE pSSM)
|
|---|
| 2666 | {
|
|---|
| 2667 | LogFlow(("TMR3TimerSave: %p:{enmState=%s, .pszDesc={%s}} pSSM=%p\n", pTimer, tmTimerState(pTimer->enmState), pTimer->pszDesc, pSSM));
|
|---|
| 2668 | switch (pTimer->enmState)
|
|---|
| 2669 | {
|
|---|
| 2670 | case TMTIMERSTATE_STOPPED:
|
|---|
| 2671 | case TMTIMERSTATE_PENDING_STOP:
|
|---|
| 2672 | case TMTIMERSTATE_PENDING_STOP_SCHEDULE:
|
|---|
| 2673 | return SSMR3PutU8(pSSM, TMTIMERSTATE_SAVED_PENDING_STOP);
|
|---|
| 2674 |
|
|---|
| 2675 | case TMTIMERSTATE_PENDING_SCHEDULE_SET_EXPIRE:
|
|---|
| 2676 | case TMTIMERSTATE_PENDING_RESCHEDULE_SET_EXPIRE:
|
|---|
| 2677 | AssertMsgFailed(("u64Expire is being updated! (%s)\n", pTimer->pszDesc));
|
|---|
| 2678 | if (!RTThreadYield())
|
|---|
| 2679 | RTThreadSleep(1);
|
|---|
| 2680 | RT_FALL_THRU();
|
|---|
| 2681 | case TMTIMERSTATE_ACTIVE:
|
|---|
| 2682 | case TMTIMERSTATE_PENDING_SCHEDULE:
|
|---|
| 2683 | case TMTIMERSTATE_PENDING_RESCHEDULE:
|
|---|
| 2684 | SSMR3PutU8(pSSM, TMTIMERSTATE_SAVED_PENDING_SCHEDULE);
|
|---|
| 2685 | return SSMR3PutU64(pSSM, pTimer->u64Expire);
|
|---|
| 2686 |
|
|---|
| 2687 | case TMTIMERSTATE_EXPIRED_GET_UNLINK:
|
|---|
| 2688 | case TMTIMERSTATE_EXPIRED_DELIVER:
|
|---|
| 2689 | case TMTIMERSTATE_DESTROY:
|
|---|
| 2690 | case TMTIMERSTATE_FREE:
|
|---|
| 2691 | AssertMsgFailed(("Invalid timer state %d %s (%s)\n", pTimer->enmState, tmTimerState(pTimer->enmState), pTimer->pszDesc));
|
|---|
| 2692 | return SSMR3HandleSetStatus(pSSM, VERR_TM_INVALID_STATE);
|
|---|
| 2693 | }
|
|---|
| 2694 |
|
|---|
| 2695 | AssertMsgFailed(("Unknown timer state %d (%s)\n", pTimer->enmState, pTimer->pszDesc));
|
|---|
| 2696 | return SSMR3HandleSetStatus(pSSM, VERR_TM_UNKNOWN_STATE);
|
|---|
| 2697 | }
|
|---|
| 2698 |
|
|---|
| 2699 |
|
|---|
| 2700 | /**
|
|---|
| 2701 | * Loads the state of a timer from a saved state.
|
|---|
| 2702 | *
|
|---|
| 2703 | * @returns VBox status code.
|
|---|
| 2704 | * @param pTimer Timer to restore.
|
|---|
| 2705 | * @param pSSM Save State Manager handle.
|
|---|
| 2706 | */
|
|---|
| 2707 | VMMR3DECL(int) TMR3TimerLoad(PTMTIMERR3 pTimer, PSSMHANDLE pSSM)
|
|---|
| 2708 | {
|
|---|
| 2709 | Assert(pTimer); Assert(pSSM); VM_ASSERT_EMT(pTimer->pVMR3);
|
|---|
| 2710 | LogFlow(("TMR3TimerLoad: %p:{enmState=%s, .pszDesc={%s}} pSSM=%p\n", pTimer, tmTimerState(pTimer->enmState), pTimer->pszDesc, pSSM));
|
|---|
| 2711 |
|
|---|
| 2712 | /*
|
|---|
| 2713 | * Load the state and validate it.
|
|---|
| 2714 | */
|
|---|
| 2715 | uint8_t u8State;
|
|---|
| 2716 | int rc = SSMR3GetU8(pSSM, &u8State);
|
|---|
| 2717 | if (RT_FAILURE(rc))
|
|---|
| 2718 | return rc;
|
|---|
| 2719 |
|
|---|
| 2720 | /* TMTIMERSTATE_SAVED_XXX: Workaround for accidental state shift in r47786 (2009-05-26 19:12:12). */
|
|---|
| 2721 | if ( u8State == TMTIMERSTATE_SAVED_PENDING_STOP + 1
|
|---|
| 2722 | || u8State == TMTIMERSTATE_SAVED_PENDING_SCHEDULE + 1)
|
|---|
| 2723 | u8State--;
|
|---|
| 2724 |
|
|---|
| 2725 | if ( u8State != TMTIMERSTATE_SAVED_PENDING_STOP
|
|---|
| 2726 | && u8State != TMTIMERSTATE_SAVED_PENDING_SCHEDULE)
|
|---|
| 2727 | {
|
|---|
| 2728 | AssertLogRelMsgFailed(("u8State=%d\n", u8State));
|
|---|
| 2729 | return SSMR3HandleSetStatus(pSSM, VERR_TM_LOAD_STATE);
|
|---|
| 2730 | }
|
|---|
| 2731 |
|
|---|
| 2732 | /* Enter the critical sections to make TMTimerSet/Stop happy. */
|
|---|
| 2733 | if (pTimer->enmClock == TMCLOCK_VIRTUAL_SYNC)
|
|---|
| 2734 | PDMCritSectEnter(&pTimer->pVMR3->tm.s.VirtualSyncLock, VERR_IGNORED);
|
|---|
| 2735 | PPDMCRITSECT pCritSect = pTimer->pCritSect;
|
|---|
| 2736 | if (pCritSect)
|
|---|
| 2737 | PDMCritSectEnter(pCritSect, VERR_IGNORED);
|
|---|
| 2738 |
|
|---|
| 2739 | if (u8State == TMTIMERSTATE_SAVED_PENDING_SCHEDULE)
|
|---|
| 2740 | {
|
|---|
| 2741 | /*
|
|---|
| 2742 | * Load the expire time.
|
|---|
| 2743 | */
|
|---|
| 2744 | uint64_t u64Expire;
|
|---|
| 2745 | rc = SSMR3GetU64(pSSM, &u64Expire);
|
|---|
| 2746 | if (RT_FAILURE(rc))
|
|---|
| 2747 | return rc;
|
|---|
| 2748 |
|
|---|
| 2749 | /*
|
|---|
| 2750 | * Set it.
|
|---|
| 2751 | */
|
|---|
| 2752 | Log(("u8State=%d u64Expire=%llu\n", u8State, u64Expire));
|
|---|
| 2753 | rc = TMTimerSet(pTimer, u64Expire);
|
|---|
| 2754 | }
|
|---|
| 2755 | else
|
|---|
| 2756 | {
|
|---|
| 2757 | /*
|
|---|
| 2758 | * Stop it.
|
|---|
| 2759 | */
|
|---|
| 2760 | Log(("u8State=%d\n", u8State));
|
|---|
| 2761 | rc = TMTimerStop(pTimer);
|
|---|
| 2762 | }
|
|---|
| 2763 |
|
|---|
| 2764 | if (pCritSect)
|
|---|
| 2765 | PDMCritSectLeave(pCritSect);
|
|---|
| 2766 | if (pTimer->enmClock == TMCLOCK_VIRTUAL_SYNC)
|
|---|
| 2767 | PDMCritSectLeave(&pTimer->pVMR3->tm.s.VirtualSyncLock);
|
|---|
| 2768 |
|
|---|
| 2769 | /*
|
|---|
| 2770 | * On failure set SSM status.
|
|---|
| 2771 | */
|
|---|
| 2772 | if (RT_FAILURE(rc))
|
|---|
| 2773 | rc = SSMR3HandleSetStatus(pSSM, rc);
|
|---|
| 2774 | return rc;
|
|---|
| 2775 | }
|
|---|
| 2776 |
|
|---|
| 2777 |
|
|---|
| 2778 | /**
|
|---|
| 2779 | * Skips the state of a timer in a given saved state.
|
|---|
| 2780 | *
|
|---|
| 2781 | * @returns VBox status.
|
|---|
| 2782 | * @param pSSM Save State Manager handle.
|
|---|
| 2783 | * @param pfActive Where to store whether the timer was active
|
|---|
| 2784 | * when the state was saved.
|
|---|
| 2785 | */
|
|---|
| 2786 | VMMR3DECL(int) TMR3TimerSkip(PSSMHANDLE pSSM, bool *pfActive)
|
|---|
| 2787 | {
|
|---|
| 2788 | Assert(pSSM); AssertPtr(pfActive);
|
|---|
| 2789 | LogFlow(("TMR3TimerSkip: pSSM=%p pfActive=%p\n", pSSM, pfActive));
|
|---|
| 2790 |
|
|---|
| 2791 | /*
|
|---|
| 2792 | * Load the state and validate it.
|
|---|
| 2793 | */
|
|---|
| 2794 | uint8_t u8State;
|
|---|
| 2795 | int rc = SSMR3GetU8(pSSM, &u8State);
|
|---|
| 2796 | if (RT_FAILURE(rc))
|
|---|
| 2797 | return rc;
|
|---|
| 2798 |
|
|---|
| 2799 | /* TMTIMERSTATE_SAVED_XXX: Workaround for accidental state shift in r47786 (2009-05-26 19:12:12). */
|
|---|
| 2800 | if ( u8State == TMTIMERSTATE_SAVED_PENDING_STOP + 1
|
|---|
| 2801 | || u8State == TMTIMERSTATE_SAVED_PENDING_SCHEDULE + 1)
|
|---|
| 2802 | u8State--;
|
|---|
| 2803 |
|
|---|
| 2804 | if ( u8State != TMTIMERSTATE_SAVED_PENDING_STOP
|
|---|
| 2805 | && u8State != TMTIMERSTATE_SAVED_PENDING_SCHEDULE)
|
|---|
| 2806 | {
|
|---|
| 2807 | AssertLogRelMsgFailed(("u8State=%d\n", u8State));
|
|---|
| 2808 | return SSMR3HandleSetStatus(pSSM, VERR_TM_LOAD_STATE);
|
|---|
| 2809 | }
|
|---|
| 2810 |
|
|---|
| 2811 | *pfActive = (u8State == TMTIMERSTATE_SAVED_PENDING_SCHEDULE);
|
|---|
| 2812 | if (*pfActive)
|
|---|
| 2813 | {
|
|---|
| 2814 | /*
|
|---|
| 2815 | * Load the expire time.
|
|---|
| 2816 | */
|
|---|
| 2817 | uint64_t u64Expire;
|
|---|
| 2818 | rc = SSMR3GetU64(pSSM, &u64Expire);
|
|---|
| 2819 | }
|
|---|
| 2820 |
|
|---|
| 2821 | return rc;
|
|---|
| 2822 | }
|
|---|
| 2823 |
|
|---|
| 2824 |
|
|---|
| 2825 | /**
|
|---|
| 2826 | * Associates a critical section with a timer.
|
|---|
| 2827 | *
|
|---|
| 2828 | * The critical section will be entered prior to doing the timer call back, thus
|
|---|
| 2829 | * avoiding potential races between the timer thread and other threads trying to
|
|---|
| 2830 | * stop or adjust the timer expiration while it's being delivered. The timer
|
|---|
| 2831 | * thread will leave the critical section when the timer callback returns.
|
|---|
| 2832 | *
|
|---|
| 2833 | * In strict builds, ownership of the critical section will be asserted by
|
|---|
| 2834 | * TMTimerSet, TMTimerStop, TMTimerGetExpire and TMTimerDestroy (when called at
|
|---|
| 2835 | * runtime).
|
|---|
| 2836 | *
|
|---|
| 2837 | * @retval VINF_SUCCESS on success.
|
|---|
| 2838 | * @retval VERR_INVALID_HANDLE if the timer handle is NULL or invalid
|
|---|
| 2839 | * (asserted).
|
|---|
| 2840 | * @retval VERR_INVALID_PARAMETER if pCritSect is NULL or has an invalid magic
|
|---|
| 2841 | * (asserted).
|
|---|
| 2842 | * @retval VERR_ALREADY_EXISTS if a critical section was already associated
|
|---|
| 2843 | * with the timer (asserted).
|
|---|
| 2844 | * @retval VERR_INVALID_STATE if the timer isn't stopped.
|
|---|
| 2845 | *
|
|---|
| 2846 | * @param pTimer The timer handle.
|
|---|
| 2847 | * @param pCritSect The critical section. The caller must make sure this
|
|---|
| 2848 | * is around for the life time of the timer.
|
|---|
| 2849 | *
|
|---|
| 2850 | * @thread Any, but the caller is responsible for making sure the timer is not
|
|---|
| 2851 | * active.
|
|---|
| 2852 | */
|
|---|
| 2853 | VMMR3DECL(int) TMR3TimerSetCritSect(PTMTIMERR3 pTimer, PPDMCRITSECT pCritSect)
|
|---|
| 2854 | {
|
|---|
| 2855 | AssertPtrReturn(pTimer, VERR_INVALID_HANDLE);
|
|---|
| 2856 | AssertPtrReturn(pCritSect, VERR_INVALID_PARAMETER);
|
|---|
| 2857 | const char *pszName = PDMR3CritSectName(pCritSect); /* exploited for validation */
|
|---|
| 2858 | AssertReturn(pszName, VERR_INVALID_PARAMETER);
|
|---|
| 2859 | AssertReturn(!pTimer->pCritSect, VERR_ALREADY_EXISTS);
|
|---|
| 2860 | AssertReturn(pTimer->enmState == TMTIMERSTATE_STOPPED, VERR_INVALID_STATE);
|
|---|
| 2861 | LogFlow(("pTimer=%p (%s) pCritSect=%p (%s)\n", pTimer, pTimer->pszDesc, pCritSect, pszName));
|
|---|
| 2862 |
|
|---|
| 2863 | pTimer->pCritSect = pCritSect;
|
|---|
| 2864 | return VINF_SUCCESS;
|
|---|
| 2865 | }
|
|---|
| 2866 |
|
|---|
| 2867 |
|
|---|
| 2868 | /**
|
|---|
| 2869 | * Get the real world UTC time adjusted for VM lag.
|
|---|
| 2870 | *
|
|---|
| 2871 | * @returns pTime.
|
|---|
| 2872 | * @param pVM The cross context VM structure.
|
|---|
| 2873 | * @param pTime Where to store the time.
|
|---|
| 2874 | */
|
|---|
| 2875 | VMMR3_INT_DECL(PRTTIMESPEC) TMR3UtcNow(PVM pVM, PRTTIMESPEC pTime)
|
|---|
| 2876 | {
|
|---|
| 2877 | /*
|
|---|
| 2878 | * Get a stable set of VirtualSync parameters and calc the lag.
|
|---|
| 2879 | */
|
|---|
| 2880 | uint64_t offVirtualSync;
|
|---|
| 2881 | uint64_t offVirtualSyncGivenUp;
|
|---|
| 2882 | do
|
|---|
| 2883 | {
|
|---|
| 2884 | offVirtualSync = ASMAtomicReadU64(&pVM->tm.s.offVirtualSync);
|
|---|
| 2885 | offVirtualSyncGivenUp = ASMAtomicReadU64((uint64_t volatile *)&pVM->tm.s.offVirtualSyncGivenUp);
|
|---|
| 2886 | } while (ASMAtomicReadU64(&pVM->tm.s.offVirtualSync) != offVirtualSync);
|
|---|
| 2887 |
|
|---|
| 2888 | Assert(offVirtualSync >= offVirtualSyncGivenUp);
|
|---|
| 2889 | uint64_t const offLag = offVirtualSync - offVirtualSyncGivenUp;
|
|---|
| 2890 |
|
|---|
| 2891 | /*
|
|---|
| 2892 | * Get current time and adjust for virtual sync lag and do time displacement.
|
|---|
| 2893 | */
|
|---|
| 2894 | RTTimeNow(pTime);
|
|---|
| 2895 | RTTimeSpecSubNano(pTime, offLag);
|
|---|
| 2896 | RTTimeSpecAddNano(pTime, pVM->tm.s.offUTC);
|
|---|
| 2897 |
|
|---|
| 2898 | /*
|
|---|
| 2899 | * Log details if the time changed radically (also triggers on first call).
|
|---|
| 2900 | */
|
|---|
| 2901 | int64_t nsPrev = ASMAtomicXchgS64(&pVM->tm.s.nsLastUtcNow, RTTimeSpecGetNano(pTime));
|
|---|
| 2902 | int64_t cNsDelta = RTTimeSpecGetNano(pTime) - nsPrev;
|
|---|
| 2903 | if ((uint64_t)RT_ABS(cNsDelta) > RT_NS_1HOUR / 2)
|
|---|
| 2904 | {
|
|---|
| 2905 | RTTIMESPEC NowAgain;
|
|---|
| 2906 | RTTimeNow(&NowAgain);
|
|---|
| 2907 | LogRel(("TMR3UtcNow: nsNow=%'RI64 nsPrev=%'RI64 -> cNsDelta=%'RI64 (offLag=%'RI64 offVirtualSync=%'RU64 offVirtualSyncGivenUp=%'RU64, NowAgain=%'RI64)\n",
|
|---|
| 2908 | RTTimeSpecGetNano(pTime), nsPrev, cNsDelta, offLag, offVirtualSync, offVirtualSyncGivenUp, RTTimeSpecGetNano(&NowAgain)));
|
|---|
| 2909 | if (pVM->tm.s.pszUtcTouchFileOnJump && nsPrev != 0)
|
|---|
| 2910 | {
|
|---|
| 2911 | RTFILE hFile;
|
|---|
| 2912 | int rc = RTFileOpen(&hFile, pVM->tm.s.pszUtcTouchFileOnJump,
|
|---|
| 2913 | RTFILE_O_WRITE | RTFILE_O_APPEND | RTFILE_O_OPEN_CREATE | RTFILE_O_DENY_NONE);
|
|---|
| 2914 | if (RT_SUCCESS(rc))
|
|---|
| 2915 | {
|
|---|
| 2916 | char szMsg[256];
|
|---|
| 2917 | size_t cch;
|
|---|
| 2918 | cch = RTStrPrintf(szMsg, sizeof(szMsg),
|
|---|
| 2919 | "TMR3UtcNow: nsNow=%'RI64 nsPrev=%'RI64 -> cNsDelta=%'RI64 (offLag=%'RI64 offVirtualSync=%'RU64 offVirtualSyncGivenUp=%'RU64, NowAgain=%'RI64)\n",
|
|---|
| 2920 | RTTimeSpecGetNano(pTime), nsPrev, cNsDelta, offLag, offVirtualSync, offVirtualSyncGivenUp, RTTimeSpecGetNano(&NowAgain));
|
|---|
| 2921 | RTFileWrite(hFile, szMsg, cch, NULL);
|
|---|
| 2922 | RTFileClose(hFile);
|
|---|
| 2923 | }
|
|---|
| 2924 | }
|
|---|
| 2925 | }
|
|---|
| 2926 |
|
|---|
| 2927 | return pTime;
|
|---|
| 2928 | }
|
|---|
| 2929 |
|
|---|
| 2930 |
|
|---|
| 2931 | /**
|
|---|
| 2932 | * Pauses all clocks except TMCLOCK_REAL.
|
|---|
| 2933 | *
|
|---|
| 2934 | * @returns VBox status code, all errors are asserted.
|
|---|
| 2935 | * @param pVM The cross context VM structure.
|
|---|
| 2936 | * @param pVCpu The cross context virtual CPU structure.
|
|---|
| 2937 | * @thread EMT corresponding to Pointer to the VMCPU.
|
|---|
| 2938 | */
|
|---|
| 2939 | VMMR3DECL(int) TMR3NotifySuspend(PVM pVM, PVMCPU pVCpu)
|
|---|
| 2940 | {
|
|---|
| 2941 | VMCPU_ASSERT_EMT(pVCpu);
|
|---|
| 2942 |
|
|---|
| 2943 | /*
|
|---|
| 2944 | * The shared virtual clock (includes virtual sync which is tied to it).
|
|---|
| 2945 | */
|
|---|
| 2946 | TM_LOCK_TIMERS(pVM); /* Paranoia: Exploiting the timer lock here. */
|
|---|
| 2947 | int rc = tmVirtualPauseLocked(pVM);
|
|---|
| 2948 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 2949 | if (RT_FAILURE(rc))
|
|---|
| 2950 | return rc;
|
|---|
| 2951 |
|
|---|
| 2952 | /*
|
|---|
| 2953 | * Pause the TSC last since it is normally linked to the virtual
|
|---|
| 2954 | * sync clock, so the above code may actually stop both clocks.
|
|---|
| 2955 | */
|
|---|
| 2956 | if (!pVM->tm.s.fTSCTiedToExecution)
|
|---|
| 2957 | {
|
|---|
| 2958 | TM_LOCK_TIMERS(pVM); /* Exploit the timer lock for synchronization. */
|
|---|
| 2959 | rc = tmCpuTickPauseLocked(pVM, pVCpu);
|
|---|
| 2960 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 2961 | if (RT_FAILURE(rc))
|
|---|
| 2962 | return rc;
|
|---|
| 2963 | }
|
|---|
| 2964 |
|
|---|
| 2965 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
|---|
| 2966 | /*
|
|---|
| 2967 | * Update cNsTotal.
|
|---|
| 2968 | */
|
|---|
| 2969 | uint32_t uGen = ASMAtomicIncU32(&pVCpu->tm.s.uTimesGen); Assert(uGen & 1);
|
|---|
| 2970 | pVCpu->tm.s.cNsTotal = RTTimeNanoTS() - pVCpu->tm.s.u64NsTsStartTotal;
|
|---|
| 2971 | pVCpu->tm.s.cNsOther = pVCpu->tm.s.cNsTotal - pVCpu->tm.s.cNsExecuting - pVCpu->tm.s.cNsHalted;
|
|---|
| 2972 | ASMAtomicWriteU32(&pVCpu->tm.s.uTimesGen, (uGen | 1) + 1);
|
|---|
| 2973 | #endif
|
|---|
| 2974 |
|
|---|
| 2975 | return VINF_SUCCESS;
|
|---|
| 2976 | }
|
|---|
| 2977 |
|
|---|
| 2978 |
|
|---|
| 2979 | /**
|
|---|
| 2980 | * Resumes all clocks except TMCLOCK_REAL.
|
|---|
| 2981 | *
|
|---|
| 2982 | * @returns VBox status code, all errors are asserted.
|
|---|
| 2983 | * @param pVM The cross context VM structure.
|
|---|
| 2984 | * @param pVCpu The cross context virtual CPU structure.
|
|---|
| 2985 | * @thread EMT corresponding to Pointer to the VMCPU.
|
|---|
| 2986 | */
|
|---|
| 2987 | VMMR3DECL(int) TMR3NotifyResume(PVM pVM, PVMCPU pVCpu)
|
|---|
| 2988 | {
|
|---|
| 2989 | VMCPU_ASSERT_EMT(pVCpu);
|
|---|
| 2990 | int rc;
|
|---|
| 2991 |
|
|---|
| 2992 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
|---|
| 2993 | /*
|
|---|
| 2994 | * Set u64NsTsStartTotal. There is no need to back this out if either of
|
|---|
| 2995 | * the two calls below fail.
|
|---|
| 2996 | */
|
|---|
| 2997 | pVCpu->tm.s.u64NsTsStartTotal = RTTimeNanoTS() - pVCpu->tm.s.cNsTotal;
|
|---|
| 2998 | #endif
|
|---|
| 2999 |
|
|---|
| 3000 | /*
|
|---|
| 3001 | * Resume the TSC first since it is normally linked to the virtual sync
|
|---|
| 3002 | * clock, so it may actually not be resumed until we've executed the code
|
|---|
| 3003 | * below.
|
|---|
| 3004 | */
|
|---|
| 3005 | if (!pVM->tm.s.fTSCTiedToExecution)
|
|---|
| 3006 | {
|
|---|
| 3007 | TM_LOCK_TIMERS(pVM); /* Exploit the timer lock for synchronization. */
|
|---|
| 3008 | rc = tmCpuTickResumeLocked(pVM, pVCpu);
|
|---|
| 3009 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 3010 | if (RT_FAILURE(rc))
|
|---|
| 3011 | return rc;
|
|---|
| 3012 | }
|
|---|
| 3013 |
|
|---|
| 3014 | /*
|
|---|
| 3015 | * The shared virtual clock (includes virtual sync which is tied to it).
|
|---|
| 3016 | */
|
|---|
| 3017 | TM_LOCK_TIMERS(pVM); /* Paranoia: Exploiting the timer lock here. */
|
|---|
| 3018 | rc = tmVirtualResumeLocked(pVM);
|
|---|
| 3019 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 3020 |
|
|---|
| 3021 | return rc;
|
|---|
| 3022 | }
|
|---|
| 3023 |
|
|---|
| 3024 |
|
|---|
| 3025 | /**
|
|---|
| 3026 | * Sets the warp drive percent of the virtual time.
|
|---|
| 3027 | *
|
|---|
| 3028 | * @returns VBox status code.
|
|---|
| 3029 | * @param pUVM The user mode VM structure.
|
|---|
| 3030 | * @param u32Percent The new percentage. 100 means normal operation.
|
|---|
| 3031 | */
|
|---|
| 3032 | VMMDECL(int) TMR3SetWarpDrive(PUVM pUVM, uint32_t u32Percent)
|
|---|
| 3033 | {
|
|---|
| 3034 | return VMR3ReqPriorityCallWaitU(pUVM, VMCPUID_ANY, (PFNRT)tmR3SetWarpDrive, 2, pUVM, u32Percent);
|
|---|
| 3035 | }
|
|---|
| 3036 |
|
|---|
| 3037 |
|
|---|
| 3038 | /**
|
|---|
| 3039 | * EMT worker for TMR3SetWarpDrive.
|
|---|
| 3040 | *
|
|---|
| 3041 | * @returns VBox status code.
|
|---|
| 3042 | * @param pUVM The user mode VM handle.
|
|---|
| 3043 | * @param u32Percent See TMR3SetWarpDrive().
|
|---|
| 3044 | * @internal
|
|---|
| 3045 | */
|
|---|
| 3046 | static DECLCALLBACK(int) tmR3SetWarpDrive(PUVM pUVM, uint32_t u32Percent)
|
|---|
| 3047 | {
|
|---|
| 3048 | PVM pVM = pUVM->pVM;
|
|---|
| 3049 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_VM_HANDLE);
|
|---|
| 3050 | PVMCPU pVCpu = VMMGetCpu(pVM);
|
|---|
| 3051 |
|
|---|
| 3052 | /*
|
|---|
| 3053 | * Validate it.
|
|---|
| 3054 | */
|
|---|
| 3055 | AssertMsgReturn(u32Percent >= 2 && u32Percent <= 20000,
|
|---|
| 3056 | ("%RX32 is not between 2 and 20000 (inclusive).\n", u32Percent),
|
|---|
| 3057 | VERR_INVALID_PARAMETER);
|
|---|
| 3058 |
|
|---|
| 3059 | /** @todo This isn't a feature specific to virtual time, move the variables to
|
|---|
| 3060 | * TM level and make it affect TMR3UTCNow as well! */
|
|---|
| 3061 |
|
|---|
| 3062 | /*
|
|---|
| 3063 | * If the time is running we'll have to pause it before we can change
|
|---|
| 3064 | * the warp drive settings.
|
|---|
| 3065 | */
|
|---|
| 3066 | TM_LOCK_TIMERS(pVM); /* Paranoia: Exploiting the timer lock here. */
|
|---|
| 3067 | bool fPaused = !!pVM->tm.s.cVirtualTicking;
|
|---|
| 3068 | if (fPaused) /** @todo this isn't really working, but wtf. */
|
|---|
| 3069 | TMR3NotifySuspend(pVM, pVCpu);
|
|---|
| 3070 |
|
|---|
| 3071 | /** @todo Should switch TM mode to virt-tsc-emulated if it isn't already! */
|
|---|
| 3072 | pVM->tm.s.u32VirtualWarpDrivePercentage = u32Percent;
|
|---|
| 3073 | pVM->tm.s.fVirtualWarpDrive = u32Percent != 100;
|
|---|
| 3074 | LogRel(("TM: u32VirtualWarpDrivePercentage=%RI32 fVirtualWarpDrive=%RTbool\n",
|
|---|
| 3075 | pVM->tm.s.u32VirtualWarpDrivePercentage, pVM->tm.s.fVirtualWarpDrive));
|
|---|
| 3076 |
|
|---|
| 3077 | if (fPaused)
|
|---|
| 3078 | TMR3NotifyResume(pVM, pVCpu);
|
|---|
| 3079 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 3080 | return VINF_SUCCESS;
|
|---|
| 3081 | }
|
|---|
| 3082 |
|
|---|
| 3083 |
|
|---|
| 3084 | /**
|
|---|
| 3085 | * Gets the current TMCLOCK_VIRTUAL time without checking
|
|---|
| 3086 | * timers or anything.
|
|---|
| 3087 | *
|
|---|
| 3088 | * @returns The timestamp.
|
|---|
| 3089 | * @param pUVM The user mode VM structure.
|
|---|
| 3090 | *
|
|---|
| 3091 | * @remarks See TMVirtualGetNoCheck.
|
|---|
| 3092 | */
|
|---|
| 3093 | VMMR3DECL(uint64_t) TMR3TimeVirtGet(PUVM pUVM)
|
|---|
| 3094 | {
|
|---|
| 3095 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT64_MAX);
|
|---|
| 3096 | PVM pVM = pUVM->pVM;
|
|---|
| 3097 | VM_ASSERT_VALID_EXT_RETURN(pVM, UINT64_MAX);
|
|---|
| 3098 | return TMVirtualGetNoCheck(pVM);
|
|---|
| 3099 | }
|
|---|
| 3100 |
|
|---|
| 3101 |
|
|---|
| 3102 | /**
|
|---|
| 3103 | * Gets the current TMCLOCK_VIRTUAL time in milliseconds without checking
|
|---|
| 3104 | * timers or anything.
|
|---|
| 3105 | *
|
|---|
| 3106 | * @returns The timestamp in milliseconds.
|
|---|
| 3107 | * @param pUVM The user mode VM structure.
|
|---|
| 3108 | *
|
|---|
| 3109 | * @remarks See TMVirtualGetNoCheck.
|
|---|
| 3110 | */
|
|---|
| 3111 | VMMR3DECL(uint64_t) TMR3TimeVirtGetMilli(PUVM pUVM)
|
|---|
| 3112 | {
|
|---|
| 3113 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT64_MAX);
|
|---|
| 3114 | PVM pVM = pUVM->pVM;
|
|---|
| 3115 | VM_ASSERT_VALID_EXT_RETURN(pVM, UINT64_MAX);
|
|---|
| 3116 | return TMVirtualToMilli(pVM, TMVirtualGetNoCheck(pVM));
|
|---|
| 3117 | }
|
|---|
| 3118 |
|
|---|
| 3119 |
|
|---|
| 3120 | /**
|
|---|
| 3121 | * Gets the current TMCLOCK_VIRTUAL time in microseconds without checking
|
|---|
| 3122 | * timers or anything.
|
|---|
| 3123 | *
|
|---|
| 3124 | * @returns The timestamp in microseconds.
|
|---|
| 3125 | * @param pUVM The user mode VM structure.
|
|---|
| 3126 | *
|
|---|
| 3127 | * @remarks See TMVirtualGetNoCheck.
|
|---|
| 3128 | */
|
|---|
| 3129 | VMMR3DECL(uint64_t) TMR3TimeVirtGetMicro(PUVM pUVM)
|
|---|
| 3130 | {
|
|---|
| 3131 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT64_MAX);
|
|---|
| 3132 | PVM pVM = pUVM->pVM;
|
|---|
| 3133 | VM_ASSERT_VALID_EXT_RETURN(pVM, UINT64_MAX);
|
|---|
| 3134 | return TMVirtualToMicro(pVM, TMVirtualGetNoCheck(pVM));
|
|---|
| 3135 | }
|
|---|
| 3136 |
|
|---|
| 3137 |
|
|---|
| 3138 | /**
|
|---|
| 3139 | * Gets the current TMCLOCK_VIRTUAL time in nanoseconds without checking
|
|---|
| 3140 | * timers or anything.
|
|---|
| 3141 | *
|
|---|
| 3142 | * @returns The timestamp in nanoseconds.
|
|---|
| 3143 | * @param pUVM The user mode VM structure.
|
|---|
| 3144 | *
|
|---|
| 3145 | * @remarks See TMVirtualGetNoCheck.
|
|---|
| 3146 | */
|
|---|
| 3147 | VMMR3DECL(uint64_t) TMR3TimeVirtGetNano(PUVM pUVM)
|
|---|
| 3148 | {
|
|---|
| 3149 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT64_MAX);
|
|---|
| 3150 | PVM pVM = pUVM->pVM;
|
|---|
| 3151 | VM_ASSERT_VALID_EXT_RETURN(pVM, UINT64_MAX);
|
|---|
| 3152 | return TMVirtualToNano(pVM, TMVirtualGetNoCheck(pVM));
|
|---|
| 3153 | }
|
|---|
| 3154 |
|
|---|
| 3155 |
|
|---|
| 3156 | /**
|
|---|
| 3157 | * Gets the current warp drive percent.
|
|---|
| 3158 | *
|
|---|
| 3159 | * @returns The warp drive percent.
|
|---|
| 3160 | * @param pUVM The user mode VM structure.
|
|---|
| 3161 | */
|
|---|
| 3162 | VMMR3DECL(uint32_t) TMR3GetWarpDrive(PUVM pUVM)
|
|---|
| 3163 | {
|
|---|
| 3164 | UVM_ASSERT_VALID_EXT_RETURN(pUVM, UINT32_MAX);
|
|---|
| 3165 | PVM pVM = pUVM->pVM;
|
|---|
| 3166 | VM_ASSERT_VALID_EXT_RETURN(pVM, UINT32_MAX);
|
|---|
| 3167 | return pVM->tm.s.u32VirtualWarpDrivePercentage;
|
|---|
| 3168 | }
|
|---|
| 3169 |
|
|---|
| 3170 |
|
|---|
| 3171 | /**
|
|---|
| 3172 | * Gets the performance information for one virtual CPU as seen by the VMM.
|
|---|
| 3173 | *
|
|---|
| 3174 | * The returned times covers the period where the VM is running and will be
|
|---|
| 3175 | * reset when restoring a previous VM state (at least for the time being).
|
|---|
| 3176 | *
|
|---|
| 3177 | * @retval VINF_SUCCESS on success.
|
|---|
| 3178 | * @retval VERR_NOT_IMPLEMENTED if not compiled in.
|
|---|
| 3179 | * @retval VERR_INVALID_STATE if the VM handle is bad.
|
|---|
| 3180 | * @retval VERR_INVALID_PARAMETER if idCpu is out of range.
|
|---|
| 3181 | *
|
|---|
| 3182 | * @param pVM The cross context VM structure.
|
|---|
| 3183 | * @param idCpu The ID of the virtual CPU which times to get.
|
|---|
| 3184 | * @param pcNsTotal Where to store the total run time (nano seconds) of
|
|---|
| 3185 | * the CPU, i.e. the sum of the three other returns.
|
|---|
| 3186 | * Optional.
|
|---|
| 3187 | * @param pcNsExecuting Where to store the time (nano seconds) spent
|
|---|
| 3188 | * executing guest code. Optional.
|
|---|
| 3189 | * @param pcNsHalted Where to store the time (nano seconds) spent
|
|---|
| 3190 | * halted. Optional
|
|---|
| 3191 | * @param pcNsOther Where to store the time (nano seconds) spent
|
|---|
| 3192 | * preempted by the host scheduler, on virtualization
|
|---|
| 3193 | * overhead and on other tasks.
|
|---|
| 3194 | */
|
|---|
| 3195 | VMMR3DECL(int) TMR3GetCpuLoadTimes(PVM pVM, VMCPUID idCpu, uint64_t *pcNsTotal, uint64_t *pcNsExecuting,
|
|---|
| 3196 | uint64_t *pcNsHalted, uint64_t *pcNsOther)
|
|---|
| 3197 | {
|
|---|
| 3198 | VM_ASSERT_VALID_EXT_RETURN(pVM, VERR_INVALID_STATE);
|
|---|
| 3199 | AssertReturn(idCpu < pVM->cCpus, VERR_INVALID_PARAMETER);
|
|---|
| 3200 |
|
|---|
| 3201 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
|---|
| 3202 | /*
|
|---|
| 3203 | * Get a stable result set.
|
|---|
| 3204 | * This should be way quicker than an EMT request.
|
|---|
| 3205 | */
|
|---|
| 3206 | PVMCPU pVCpu = &pVM->aCpus[idCpu];
|
|---|
| 3207 | uint32_t uTimesGen = ASMAtomicReadU32(&pVCpu->tm.s.uTimesGen);
|
|---|
| 3208 | uint64_t cNsTotal = pVCpu->tm.s.cNsTotal;
|
|---|
| 3209 | uint64_t cNsExecuting = pVCpu->tm.s.cNsExecuting;
|
|---|
| 3210 | uint64_t cNsHalted = pVCpu->tm.s.cNsHalted;
|
|---|
| 3211 | uint64_t cNsOther = pVCpu->tm.s.cNsOther;
|
|---|
| 3212 | while ( (uTimesGen & 1) /* update in progress */
|
|---|
| 3213 | || uTimesGen != ASMAtomicReadU32(&pVCpu->tm.s.uTimesGen))
|
|---|
| 3214 | {
|
|---|
| 3215 | RTThreadYield();
|
|---|
| 3216 | uTimesGen = ASMAtomicReadU32(&pVCpu->tm.s.uTimesGen);
|
|---|
| 3217 | cNsTotal = pVCpu->tm.s.cNsTotal;
|
|---|
| 3218 | cNsExecuting = pVCpu->tm.s.cNsExecuting;
|
|---|
| 3219 | cNsHalted = pVCpu->tm.s.cNsHalted;
|
|---|
| 3220 | cNsOther = pVCpu->tm.s.cNsOther;
|
|---|
| 3221 | }
|
|---|
| 3222 |
|
|---|
| 3223 | /*
|
|---|
| 3224 | * Fill in the return values.
|
|---|
| 3225 | */
|
|---|
| 3226 | if (pcNsTotal)
|
|---|
| 3227 | *pcNsTotal = cNsTotal;
|
|---|
| 3228 | if (pcNsExecuting)
|
|---|
| 3229 | *pcNsExecuting = cNsExecuting;
|
|---|
| 3230 | if (pcNsHalted)
|
|---|
| 3231 | *pcNsHalted = cNsHalted;
|
|---|
| 3232 | if (pcNsOther)
|
|---|
| 3233 | *pcNsOther = cNsOther;
|
|---|
| 3234 |
|
|---|
| 3235 | return VINF_SUCCESS;
|
|---|
| 3236 |
|
|---|
| 3237 | #else
|
|---|
| 3238 | return VERR_NOT_IMPLEMENTED;
|
|---|
| 3239 | #endif
|
|---|
| 3240 | }
|
|---|
| 3241 |
|
|---|
| 3242 | #ifndef VBOX_WITHOUT_NS_ACCOUNTING
|
|---|
| 3243 |
|
|---|
| 3244 | /**
|
|---|
| 3245 | * Helper for tmR3CpuLoadTimer.
|
|---|
| 3246 | * @returns
|
|---|
| 3247 | * @param pState The state to update.
|
|---|
| 3248 | * @param cNsTotal Total time.
|
|---|
| 3249 | * @param cNsExecuting Time executing.
|
|---|
| 3250 | * @param cNsHalted Time halted.
|
|---|
| 3251 | */
|
|---|
| 3252 | DECLINLINE(void) tmR3CpuLoadTimerMakeUpdate(PTMCPULOADSTATE pState, uint64_t cNsTotal, uint64_t cNsExecuting, uint64_t cNsHalted)
|
|---|
| 3253 | {
|
|---|
| 3254 | /* Calc deltas */
|
|---|
| 3255 | uint64_t cNsTotalDelta = cNsTotal - pState->cNsPrevTotal;
|
|---|
| 3256 | pState->cNsPrevTotal = cNsTotal;
|
|---|
| 3257 |
|
|---|
| 3258 | uint64_t cNsExecutingDelta = cNsExecuting - pState->cNsPrevExecuting;
|
|---|
| 3259 | pState->cNsPrevExecuting = cNsExecuting;
|
|---|
| 3260 |
|
|---|
| 3261 | uint64_t cNsHaltedDelta = cNsHalted - pState->cNsPrevHalted;
|
|---|
| 3262 | pState->cNsPrevHalted = cNsHalted;
|
|---|
| 3263 |
|
|---|
| 3264 | /* Calc pcts. */
|
|---|
| 3265 | if (!cNsTotalDelta)
|
|---|
| 3266 | {
|
|---|
| 3267 | pState->cPctExecuting = 0;
|
|---|
| 3268 | pState->cPctHalted = 100;
|
|---|
| 3269 | pState->cPctOther = 0;
|
|---|
| 3270 | }
|
|---|
| 3271 | else if (cNsTotalDelta < UINT64_MAX / 4)
|
|---|
| 3272 | {
|
|---|
| 3273 | pState->cPctExecuting = (uint8_t)(cNsExecutingDelta * 100 / cNsTotalDelta);
|
|---|
| 3274 | pState->cPctHalted = (uint8_t)(cNsHaltedDelta * 100 / cNsTotalDelta);
|
|---|
| 3275 | pState->cPctOther = (uint8_t)((cNsTotalDelta - cNsExecutingDelta - cNsHaltedDelta) * 100 / cNsTotalDelta);
|
|---|
| 3276 | }
|
|---|
| 3277 | else
|
|---|
| 3278 | {
|
|---|
| 3279 | pState->cPctExecuting = 0;
|
|---|
| 3280 | pState->cPctHalted = 100;
|
|---|
| 3281 | pState->cPctOther = 0;
|
|---|
| 3282 | }
|
|---|
| 3283 | }
|
|---|
| 3284 |
|
|---|
| 3285 |
|
|---|
| 3286 | /**
|
|---|
| 3287 | * Timer callback that calculates the CPU load since the last time it was
|
|---|
| 3288 | * called.
|
|---|
| 3289 | *
|
|---|
| 3290 | * @param pVM The cross context VM structure.
|
|---|
| 3291 | * @param pTimer The timer.
|
|---|
| 3292 | * @param pvUser NULL, unused.
|
|---|
| 3293 | */
|
|---|
| 3294 | static DECLCALLBACK(void) tmR3CpuLoadTimer(PVM pVM, PTMTIMER pTimer, void *pvUser)
|
|---|
| 3295 | {
|
|---|
| 3296 | /*
|
|---|
| 3297 | * Re-arm the timer first.
|
|---|
| 3298 | */
|
|---|
| 3299 | int rc = TMTimerSetMillies(pTimer, 1000);
|
|---|
| 3300 | AssertLogRelRC(rc);
|
|---|
| 3301 | NOREF(pvUser);
|
|---|
| 3302 |
|
|---|
| 3303 | /*
|
|---|
| 3304 | * Update the values for each CPU.
|
|---|
| 3305 | */
|
|---|
| 3306 | uint64_t cNsTotalAll = 0;
|
|---|
| 3307 | uint64_t cNsExecutingAll = 0;
|
|---|
| 3308 | uint64_t cNsHaltedAll = 0;
|
|---|
| 3309 | for (VMCPUID iCpu = 0; iCpu < pVM->cCpus; iCpu++)
|
|---|
| 3310 | {
|
|---|
| 3311 | PVMCPU pVCpu = &pVM->aCpus[iCpu];
|
|---|
| 3312 |
|
|---|
| 3313 | /* Try get a stable data set. */
|
|---|
| 3314 | uint32_t cTries = 3;
|
|---|
| 3315 | uint32_t uTimesGen = ASMAtomicReadU32(&pVCpu->tm.s.uTimesGen);
|
|---|
| 3316 | uint64_t cNsTotal = pVCpu->tm.s.cNsTotal;
|
|---|
| 3317 | uint64_t cNsExecuting = pVCpu->tm.s.cNsExecuting;
|
|---|
| 3318 | uint64_t cNsHalted = pVCpu->tm.s.cNsHalted;
|
|---|
| 3319 | while (RT_UNLIKELY( (uTimesGen & 1) /* update in progress */
|
|---|
| 3320 | || uTimesGen != ASMAtomicReadU32(&pVCpu->tm.s.uTimesGen)))
|
|---|
| 3321 | {
|
|---|
| 3322 | if (!--cTries)
|
|---|
| 3323 | break;
|
|---|
| 3324 | ASMNopPause();
|
|---|
| 3325 | uTimesGen = ASMAtomicReadU32(&pVCpu->tm.s.uTimesGen);
|
|---|
| 3326 | cNsTotal = pVCpu->tm.s.cNsTotal;
|
|---|
| 3327 | cNsExecuting = pVCpu->tm.s.cNsExecuting;
|
|---|
| 3328 | cNsHalted = pVCpu->tm.s.cNsHalted;
|
|---|
| 3329 | }
|
|---|
| 3330 |
|
|---|
| 3331 | /* Totals */
|
|---|
| 3332 | cNsTotalAll += cNsTotal;
|
|---|
| 3333 | cNsExecutingAll += cNsExecuting;
|
|---|
| 3334 | cNsHaltedAll += cNsHalted;
|
|---|
| 3335 |
|
|---|
| 3336 | /* Calc the PCTs and update the state. */
|
|---|
| 3337 | tmR3CpuLoadTimerMakeUpdate(&pVCpu->tm.s.CpuLoad, cNsTotal, cNsExecuting, cNsHalted);
|
|---|
| 3338 | }
|
|---|
| 3339 |
|
|---|
| 3340 | /*
|
|---|
| 3341 | * Update the value for all the CPUs.
|
|---|
| 3342 | */
|
|---|
| 3343 | tmR3CpuLoadTimerMakeUpdate(&pVM->tm.s.CpuLoad, cNsTotalAll, cNsExecutingAll, cNsHaltedAll);
|
|---|
| 3344 |
|
|---|
| 3345 | /** @todo Try add 1, 5 and 15 min load stats. */
|
|---|
| 3346 |
|
|---|
| 3347 | }
|
|---|
| 3348 |
|
|---|
| 3349 | #endif /* !VBOX_WITHOUT_NS_ACCOUNTING */
|
|---|
| 3350 |
|
|---|
| 3351 |
|
|---|
| 3352 | /**
|
|---|
| 3353 | * @callback_method_impl{PFNVMMEMTRENDEZVOUS,
|
|---|
| 3354 | * Worker for TMR3CpuTickParavirtEnable}
|
|---|
| 3355 | */
|
|---|
| 3356 | static DECLCALLBACK(VBOXSTRICTRC) tmR3CpuTickParavirtEnable(PVM pVM, PVMCPU pVCpuEmt, void *pvData)
|
|---|
| 3357 | {
|
|---|
| 3358 | AssertPtr(pVM); Assert(pVM->tm.s.fTSCModeSwitchAllowed); NOREF(pVCpuEmt); NOREF(pvData);
|
|---|
| 3359 | Assert(pVM->tm.s.enmTSCMode != TMTSCMODE_REAL_TSC_OFFSET);
|
|---|
| 3360 | Assert(pVM->tm.s.enmTSCMode != TMTSCMODE_NATIVE_API); /** @todo figure out NEM/win and paravirt */
|
|---|
| 3361 | Assert(tmR3HasFixedTSC(pVM));
|
|---|
| 3362 |
|
|---|
| 3363 | /*
|
|---|
| 3364 | * The return value of TMCpuTickGet() and the guest's TSC value for each
|
|---|
| 3365 | * CPU must remain constant across the TM TSC mode-switch. Thus we have
|
|---|
| 3366 | * the following equation (new/old signifies the new/old tsc modes):
|
|---|
| 3367 | * uNewTsc = uOldTsc
|
|---|
| 3368 | *
|
|---|
| 3369 | * Where (see tmCpuTickGetInternal):
|
|---|
| 3370 | * uOldTsc = uRawOldTsc - offTscRawSrcOld
|
|---|
| 3371 | * uNewTsc = uRawNewTsc - offTscRawSrcNew
|
|---|
| 3372 | *
|
|---|
| 3373 | * Solve it for offTscRawSrcNew without replacing uOldTsc:
|
|---|
| 3374 | * uRawNewTsc - offTscRawSrcNew = uOldTsc
|
|---|
| 3375 | * => -offTscRawSrcNew = uOldTsc - uRawNewTsc
|
|---|
| 3376 | * => offTscRawSrcNew = uRawNewTsc - uOldTsc
|
|---|
| 3377 | */
|
|---|
| 3378 | uint64_t uRawOldTsc = tmR3CpuTickGetRawVirtualNoCheck(pVM);
|
|---|
| 3379 | uint64_t uRawNewTsc = SUPReadTsc();
|
|---|
| 3380 | uint32_t cCpus = pVM->cCpus;
|
|---|
| 3381 | for (uint32_t i = 0; i < cCpus; i++)
|
|---|
| 3382 | {
|
|---|
| 3383 | PVMCPU pVCpu = &pVM->aCpus[i];
|
|---|
| 3384 | uint64_t uOldTsc = uRawOldTsc - pVCpu->tm.s.offTSCRawSrc;
|
|---|
| 3385 | pVCpu->tm.s.offTSCRawSrc = uRawNewTsc - uOldTsc;
|
|---|
| 3386 | Assert(uRawNewTsc - pVCpu->tm.s.offTSCRawSrc >= uOldTsc); /* paranoia^256 */
|
|---|
| 3387 | }
|
|---|
| 3388 |
|
|---|
| 3389 | LogRel(("TM: Switching TSC mode from '%s' to '%s'\n", tmR3GetTSCModeNameEx(pVM->tm.s.enmTSCMode),
|
|---|
| 3390 | tmR3GetTSCModeNameEx(TMTSCMODE_REAL_TSC_OFFSET)));
|
|---|
| 3391 | pVM->tm.s.enmTSCMode = TMTSCMODE_REAL_TSC_OFFSET;
|
|---|
| 3392 | return VINF_SUCCESS;
|
|---|
| 3393 | }
|
|---|
| 3394 |
|
|---|
| 3395 |
|
|---|
| 3396 | /**
|
|---|
| 3397 | * Notify TM that the guest has enabled usage of a paravirtualized TSC.
|
|---|
| 3398 | *
|
|---|
| 3399 | * This may perform a EMT rendezvous and change the TSC virtualization mode.
|
|---|
| 3400 | *
|
|---|
| 3401 | * @returns VBox status code.
|
|---|
| 3402 | * @param pVM The cross context VM structure.
|
|---|
| 3403 | */
|
|---|
| 3404 | VMMR3_INT_DECL(int) TMR3CpuTickParavirtEnable(PVM pVM)
|
|---|
| 3405 | {
|
|---|
| 3406 | int rc = VINF_SUCCESS;
|
|---|
| 3407 | if (pVM->tm.s.fTSCModeSwitchAllowed)
|
|---|
| 3408 | {
|
|---|
| 3409 | if (pVM->tm.s.enmTSCMode != TMTSCMODE_REAL_TSC_OFFSET)
|
|---|
| 3410 | rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, tmR3CpuTickParavirtEnable, NULL);
|
|---|
| 3411 | }
|
|---|
| 3412 | else
|
|---|
| 3413 | LogRel(("TM: Host/VM is not suitable for using TSC mode '%s', request to change TSC mode ignored\n",
|
|---|
| 3414 | tmR3GetTSCModeNameEx(TMTSCMODE_REAL_TSC_OFFSET)));
|
|---|
| 3415 | pVM->tm.s.fParavirtTscEnabled = true;
|
|---|
| 3416 | return rc;
|
|---|
| 3417 | }
|
|---|
| 3418 |
|
|---|
| 3419 |
|
|---|
| 3420 | /**
|
|---|
| 3421 | * @callback_method_impl{PFNVMMEMTRENDEZVOUS,
|
|---|
| 3422 | * Worker for TMR3CpuTickParavirtDisable}
|
|---|
| 3423 | */
|
|---|
| 3424 | static DECLCALLBACK(VBOXSTRICTRC) tmR3CpuTickParavirtDisable(PVM pVM, PVMCPU pVCpuEmt, void *pvData)
|
|---|
| 3425 | {
|
|---|
| 3426 | AssertPtr(pVM); Assert(pVM->tm.s.fTSCModeSwitchAllowed); NOREF(pVCpuEmt);
|
|---|
| 3427 | Assert( pVM->tm.s.enmTSCMode == TMTSCMODE_REAL_TSC_OFFSET
|
|---|
| 3428 | && pVM->tm.s.enmTSCMode != pVM->tm.s.enmOriginalTSCMode);
|
|---|
| 3429 | RT_NOREF1(pvData);
|
|---|
| 3430 |
|
|---|
| 3431 | /*
|
|---|
| 3432 | * See tmR3CpuTickParavirtEnable for an explanation of the conversion math.
|
|---|
| 3433 | */
|
|---|
| 3434 | uint64_t uRawOldTsc = SUPReadTsc();
|
|---|
| 3435 | uint64_t uRawNewTsc = tmR3CpuTickGetRawVirtualNoCheck(pVM);
|
|---|
| 3436 | uint32_t cCpus = pVM->cCpus;
|
|---|
| 3437 | for (uint32_t i = 0; i < cCpus; i++)
|
|---|
| 3438 | {
|
|---|
| 3439 | PVMCPU pVCpu = &pVM->aCpus[i];
|
|---|
| 3440 | uint64_t uOldTsc = uRawOldTsc - pVCpu->tm.s.offTSCRawSrc;
|
|---|
| 3441 | pVCpu->tm.s.offTSCRawSrc = uRawNewTsc - uOldTsc;
|
|---|
| 3442 | Assert(uRawNewTsc - pVCpu->tm.s.offTSCRawSrc >= uOldTsc); /* paranoia^256 */
|
|---|
| 3443 |
|
|---|
| 3444 | /* Update the last-seen tick here as we havent't been updating it (as we don't
|
|---|
| 3445 | need it) while in pure TSC-offsetting mode. */
|
|---|
| 3446 | pVCpu->tm.s.u64TSCLastSeen = uOldTsc;
|
|---|
| 3447 | }
|
|---|
| 3448 |
|
|---|
| 3449 | LogRel(("TM: Switching TSC mode from '%s' to '%s'\n", tmR3GetTSCModeNameEx(pVM->tm.s.enmTSCMode),
|
|---|
| 3450 | tmR3GetTSCModeNameEx(pVM->tm.s.enmOriginalTSCMode)));
|
|---|
| 3451 | pVM->tm.s.enmTSCMode = pVM->tm.s.enmOriginalTSCMode;
|
|---|
| 3452 | return VINF_SUCCESS;
|
|---|
| 3453 | }
|
|---|
| 3454 |
|
|---|
| 3455 |
|
|---|
| 3456 | /**
|
|---|
| 3457 | * Notify TM that the guest has disabled usage of a paravirtualized TSC.
|
|---|
| 3458 | *
|
|---|
| 3459 | * If TMR3CpuTickParavirtEnable() changed the TSC virtualization mode, this will
|
|---|
| 3460 | * perform an EMT rendezvous to revert those changes.
|
|---|
| 3461 | *
|
|---|
| 3462 | * @returns VBox status code.
|
|---|
| 3463 | * @param pVM The cross context VM structure.
|
|---|
| 3464 | */
|
|---|
| 3465 | VMMR3_INT_DECL(int) TMR3CpuTickParavirtDisable(PVM pVM)
|
|---|
| 3466 | {
|
|---|
| 3467 | int rc = VINF_SUCCESS;
|
|---|
| 3468 | if ( pVM->tm.s.fTSCModeSwitchAllowed
|
|---|
| 3469 | && pVM->tm.s.enmTSCMode == TMTSCMODE_REAL_TSC_OFFSET
|
|---|
| 3470 | && pVM->tm.s.enmTSCMode != pVM->tm.s.enmOriginalTSCMode)
|
|---|
| 3471 | rc = VMMR3EmtRendezvous(pVM, VMMEMTRENDEZVOUS_FLAGS_TYPE_ONCE, tmR3CpuTickParavirtDisable, NULL);
|
|---|
| 3472 | pVM->tm.s.fParavirtTscEnabled = false;
|
|---|
| 3473 | return rc;
|
|---|
| 3474 | }
|
|---|
| 3475 |
|
|---|
| 3476 |
|
|---|
| 3477 | /**
|
|---|
| 3478 | * Check whether the guest can be presented a fixed rate & monotonic TSC.
|
|---|
| 3479 | *
|
|---|
| 3480 | * @returns true if TSC is stable, false otherwise.
|
|---|
| 3481 | * @param pVM The cross context VM structure.
|
|---|
| 3482 | * @param fWithParavirtEnabled Whether it's fixed & monotonic when
|
|---|
| 3483 | * paravirt. TSC is enabled or not.
|
|---|
| 3484 | *
|
|---|
| 3485 | * @remarks Must be called only after TMR3InitFinalize().
|
|---|
| 3486 | */
|
|---|
| 3487 | VMMR3_INT_DECL(bool) TMR3CpuTickIsFixedRateMonotonic(PVM pVM, bool fWithParavirtEnabled)
|
|---|
| 3488 | {
|
|---|
| 3489 | /** @todo figure out what exactly we want here later. */
|
|---|
| 3490 | NOREF(fWithParavirtEnabled);
|
|---|
| 3491 | return ( tmR3HasFixedTSC(pVM) /* Host has fixed-rate TSC. */
|
|---|
| 3492 | && g_pSUPGlobalInfoPage->u32Mode != SUPGIPMODE_ASYNC_TSC); /* GIP thinks it's monotonic. */
|
|---|
| 3493 | }
|
|---|
| 3494 |
|
|---|
| 3495 |
|
|---|
| 3496 | /**
|
|---|
| 3497 | * Gets the 5 char clock name for the info tables.
|
|---|
| 3498 | *
|
|---|
| 3499 | * @returns The name.
|
|---|
| 3500 | * @param enmClock The clock.
|
|---|
| 3501 | */
|
|---|
| 3502 | DECLINLINE(const char *) tmR3Get5CharClockName(TMCLOCK enmClock)
|
|---|
| 3503 | {
|
|---|
| 3504 | switch (enmClock)
|
|---|
| 3505 | {
|
|---|
| 3506 | case TMCLOCK_REAL: return "Real ";
|
|---|
| 3507 | case TMCLOCK_VIRTUAL: return "Virt ";
|
|---|
| 3508 | case TMCLOCK_VIRTUAL_SYNC: return "VrSy ";
|
|---|
| 3509 | case TMCLOCK_TSC: return "TSC ";
|
|---|
| 3510 | default: return "Bad ";
|
|---|
| 3511 | }
|
|---|
| 3512 | }
|
|---|
| 3513 |
|
|---|
| 3514 |
|
|---|
| 3515 | /**
|
|---|
| 3516 | * Display all timers.
|
|---|
| 3517 | *
|
|---|
| 3518 | * @param pVM The cross context VM structure.
|
|---|
| 3519 | * @param pHlp The info helpers.
|
|---|
| 3520 | * @param pszArgs Arguments, ignored.
|
|---|
| 3521 | */
|
|---|
| 3522 | static DECLCALLBACK(void) tmR3TimerInfo(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
|
|---|
| 3523 | {
|
|---|
| 3524 | NOREF(pszArgs);
|
|---|
| 3525 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3526 | "Timers (pVM=%p)\n"
|
|---|
| 3527 | "%.*s %.*s %.*s %.*s Clock %18s %18s %6s %-25s Description\n",
|
|---|
| 3528 | pVM,
|
|---|
| 3529 | sizeof(RTR3PTR) * 2, "pTimerR3 ",
|
|---|
| 3530 | sizeof(int32_t) * 2, "offNext ",
|
|---|
| 3531 | sizeof(int32_t) * 2, "offPrev ",
|
|---|
| 3532 | sizeof(int32_t) * 2, "offSched ",
|
|---|
| 3533 | "Time",
|
|---|
| 3534 | "Expire",
|
|---|
| 3535 | "HzHint",
|
|---|
| 3536 | "State");
|
|---|
| 3537 | TM_LOCK_TIMERS(pVM);
|
|---|
| 3538 | for (PTMTIMERR3 pTimer = pVM->tm.s.pCreated; pTimer; pTimer = pTimer->pBigNext)
|
|---|
| 3539 | {
|
|---|
| 3540 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3541 | "%p %08RX32 %08RX32 %08RX32 %s %18RU64 %18RU64 %6RU32 %-25s %s\n",
|
|---|
| 3542 | pTimer,
|
|---|
| 3543 | pTimer->offNext,
|
|---|
| 3544 | pTimer->offPrev,
|
|---|
| 3545 | pTimer->offScheduleNext,
|
|---|
| 3546 | tmR3Get5CharClockName(pTimer->enmClock),
|
|---|
| 3547 | TMTimerGet(pTimer),
|
|---|
| 3548 | pTimer->u64Expire,
|
|---|
| 3549 | pTimer->uHzHint,
|
|---|
| 3550 | tmTimerState(pTimer->enmState),
|
|---|
| 3551 | pTimer->pszDesc);
|
|---|
| 3552 | }
|
|---|
| 3553 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 3554 | }
|
|---|
| 3555 |
|
|---|
| 3556 |
|
|---|
| 3557 | /**
|
|---|
| 3558 | * Display all active timers.
|
|---|
| 3559 | *
|
|---|
| 3560 | * @param pVM The cross context VM structure.
|
|---|
| 3561 | * @param pHlp The info helpers.
|
|---|
| 3562 | * @param pszArgs Arguments, ignored.
|
|---|
| 3563 | */
|
|---|
| 3564 | static DECLCALLBACK(void) tmR3TimerInfoActive(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
|
|---|
| 3565 | {
|
|---|
| 3566 | NOREF(pszArgs);
|
|---|
| 3567 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3568 | "Active Timers (pVM=%p)\n"
|
|---|
| 3569 | "%.*s %.*s %.*s %.*s Clock %18s %18s %6s %-25s Description\n",
|
|---|
| 3570 | pVM,
|
|---|
| 3571 | sizeof(RTR3PTR) * 2, "pTimerR3 ",
|
|---|
| 3572 | sizeof(int32_t) * 2, "offNext ",
|
|---|
| 3573 | sizeof(int32_t) * 2, "offPrev ",
|
|---|
| 3574 | sizeof(int32_t) * 2, "offSched ",
|
|---|
| 3575 | "Time",
|
|---|
| 3576 | "Expire",
|
|---|
| 3577 | "HzHint",
|
|---|
| 3578 | "State");
|
|---|
| 3579 | for (unsigned iQueue = 0; iQueue < TMCLOCK_MAX; iQueue++)
|
|---|
| 3580 | {
|
|---|
| 3581 | TM_LOCK_TIMERS(pVM);
|
|---|
| 3582 | for (PTMTIMERR3 pTimer = TMTIMER_GET_HEAD(&pVM->tm.s.paTimerQueuesR3[iQueue]);
|
|---|
| 3583 | pTimer;
|
|---|
| 3584 | pTimer = TMTIMER_GET_NEXT(pTimer))
|
|---|
| 3585 | {
|
|---|
| 3586 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3587 | "%p %08RX32 %08RX32 %08RX32 %s %18RU64 %18RU64 %6RU32 %-25s %s\n",
|
|---|
| 3588 | pTimer,
|
|---|
| 3589 | pTimer->offNext,
|
|---|
| 3590 | pTimer->offPrev,
|
|---|
| 3591 | pTimer->offScheduleNext,
|
|---|
| 3592 | tmR3Get5CharClockName(pTimer->enmClock),
|
|---|
| 3593 | TMTimerGet(pTimer),
|
|---|
| 3594 | pTimer->u64Expire,
|
|---|
| 3595 | pTimer->uHzHint,
|
|---|
| 3596 | tmTimerState(pTimer->enmState),
|
|---|
| 3597 | pTimer->pszDesc);
|
|---|
| 3598 | }
|
|---|
| 3599 | TM_UNLOCK_TIMERS(pVM);
|
|---|
| 3600 | }
|
|---|
| 3601 | }
|
|---|
| 3602 |
|
|---|
| 3603 |
|
|---|
| 3604 | /**
|
|---|
| 3605 | * Display all clocks.
|
|---|
| 3606 | *
|
|---|
| 3607 | * @param pVM The cross context VM structure.
|
|---|
| 3608 | * @param pHlp The info helpers.
|
|---|
| 3609 | * @param pszArgs Arguments, ignored.
|
|---|
| 3610 | */
|
|---|
| 3611 | static DECLCALLBACK(void) tmR3InfoClocks(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
|
|---|
| 3612 | {
|
|---|
| 3613 | NOREF(pszArgs);
|
|---|
| 3614 |
|
|---|
| 3615 | /*
|
|---|
| 3616 | * Read the times first to avoid more than necessary time variation.
|
|---|
| 3617 | */
|
|---|
| 3618 | const uint64_t u64Virtual = TMVirtualGet(pVM);
|
|---|
| 3619 | const uint64_t u64VirtualSync = TMVirtualSyncGet(pVM);
|
|---|
| 3620 | const uint64_t u64Real = TMRealGet(pVM);
|
|---|
| 3621 |
|
|---|
| 3622 | for (VMCPUID i = 0; i < pVM->cCpus; i++)
|
|---|
| 3623 | {
|
|---|
| 3624 | PVMCPU pVCpu = &pVM->aCpus[i];
|
|---|
| 3625 | uint64_t u64TSC = TMCpuTickGet(pVCpu);
|
|---|
| 3626 |
|
|---|
| 3627 | /*
|
|---|
| 3628 | * TSC
|
|---|
| 3629 | */
|
|---|
| 3630 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3631 | "Cpu Tick: %18RU64 (%#016RX64) %RU64Hz %s - virtualized",
|
|---|
| 3632 | u64TSC, u64TSC, TMCpuTicksPerSecond(pVM),
|
|---|
| 3633 | pVCpu->tm.s.fTSCTicking ? "ticking" : "paused");
|
|---|
| 3634 | if (pVM->tm.s.enmTSCMode == TMTSCMODE_REAL_TSC_OFFSET)
|
|---|
| 3635 | {
|
|---|
| 3636 | pHlp->pfnPrintf(pHlp, " - real tsc offset");
|
|---|
| 3637 | if (pVCpu->tm.s.offTSCRawSrc)
|
|---|
| 3638 | pHlp->pfnPrintf(pHlp, "\n offset %RU64", pVCpu->tm.s.offTSCRawSrc);
|
|---|
| 3639 | }
|
|---|
| 3640 | else if (pVM->tm.s.enmTSCMode == TMTSCMODE_NATIVE_API)
|
|---|
| 3641 | pHlp->pfnPrintf(pHlp, " - native api");
|
|---|
| 3642 | else
|
|---|
| 3643 | pHlp->pfnPrintf(pHlp, " - virtual clock");
|
|---|
| 3644 | pHlp->pfnPrintf(pHlp, "\n");
|
|---|
| 3645 | }
|
|---|
| 3646 |
|
|---|
| 3647 | /*
|
|---|
| 3648 | * virtual
|
|---|
| 3649 | */
|
|---|
| 3650 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3651 | " Virtual: %18RU64 (%#016RX64) %RU64Hz %s",
|
|---|
| 3652 | u64Virtual, u64Virtual, TMVirtualGetFreq(pVM),
|
|---|
| 3653 | pVM->tm.s.cVirtualTicking ? "ticking" : "paused");
|
|---|
| 3654 | if (pVM->tm.s.fVirtualWarpDrive)
|
|---|
| 3655 | pHlp->pfnPrintf(pHlp, " WarpDrive %RU32 %%", pVM->tm.s.u32VirtualWarpDrivePercentage);
|
|---|
| 3656 | pHlp->pfnPrintf(pHlp, "\n");
|
|---|
| 3657 |
|
|---|
| 3658 | /*
|
|---|
| 3659 | * virtual sync
|
|---|
| 3660 | */
|
|---|
| 3661 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3662 | "VirtSync: %18RU64 (%#016RX64) %s%s",
|
|---|
| 3663 | u64VirtualSync, u64VirtualSync,
|
|---|
| 3664 | pVM->tm.s.fVirtualSyncTicking ? "ticking" : "paused",
|
|---|
| 3665 | pVM->tm.s.fVirtualSyncCatchUp ? " - catchup" : "");
|
|---|
| 3666 | if (pVM->tm.s.offVirtualSync)
|
|---|
| 3667 | {
|
|---|
| 3668 | pHlp->pfnPrintf(pHlp, "\n offset %RU64", pVM->tm.s.offVirtualSync);
|
|---|
| 3669 | if (pVM->tm.s.u32VirtualSyncCatchUpPercentage)
|
|---|
| 3670 | pHlp->pfnPrintf(pHlp, " catch-up rate %u %%", pVM->tm.s.u32VirtualSyncCatchUpPercentage);
|
|---|
| 3671 | }
|
|---|
| 3672 | pHlp->pfnPrintf(pHlp, "\n");
|
|---|
| 3673 |
|
|---|
| 3674 | /*
|
|---|
| 3675 | * real
|
|---|
| 3676 | */
|
|---|
| 3677 | pHlp->pfnPrintf(pHlp,
|
|---|
| 3678 | " Real: %18RU64 (%#016RX64) %RU64Hz\n",
|
|---|
| 3679 | u64Real, u64Real, TMRealGetFreq(pVM));
|
|---|
| 3680 | }
|
|---|
| 3681 |
|
|---|
| 3682 |
|
|---|
| 3683 | /**
|
|---|
| 3684 | * Gets the descriptive TM TSC mode name given the enum value.
|
|---|
| 3685 | *
|
|---|
| 3686 | * @returns The name.
|
|---|
| 3687 | * @param enmMode The mode to name.
|
|---|
| 3688 | */
|
|---|
| 3689 | static const char *tmR3GetTSCModeNameEx(TMTSCMODE enmMode)
|
|---|
| 3690 | {
|
|---|
| 3691 | switch (enmMode)
|
|---|
| 3692 | {
|
|---|
| 3693 | case TMTSCMODE_REAL_TSC_OFFSET: return "RealTscOffset";
|
|---|
| 3694 | case TMTSCMODE_VIRT_TSC_EMULATED: return "VirtTscEmulated";
|
|---|
| 3695 | case TMTSCMODE_DYNAMIC: return "Dynamic";
|
|---|
| 3696 | case TMTSCMODE_NATIVE_API: return "NativeApi";
|
|---|
| 3697 | default: return "???";
|
|---|
| 3698 | }
|
|---|
| 3699 | }
|
|---|
| 3700 |
|
|---|
| 3701 |
|
|---|
| 3702 | /**
|
|---|
| 3703 | * Gets the descriptive TM TSC mode name.
|
|---|
| 3704 | *
|
|---|
| 3705 | * @returns The name.
|
|---|
| 3706 | * @param pVM The cross context VM structure.
|
|---|
| 3707 | */
|
|---|
| 3708 | static const char *tmR3GetTSCModeName(PVM pVM)
|
|---|
| 3709 | {
|
|---|
| 3710 | Assert(pVM);
|
|---|
| 3711 | return tmR3GetTSCModeNameEx(pVM->tm.s.enmTSCMode);
|
|---|
| 3712 | }
|
|---|
| 3713 |
|
|---|
