VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMAll/HWACCMAll.cpp@ 13134

Last change on this file since 13134 was 13025, checked in by vboxsync, 16 years ago

Updates for EPT.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 3.7 KB
Line 
1/* $Id: HWACCMAll.cpp 13025 2008-10-07 07:28:54Z vboxsync $ */
2/** @file
3 * HWACCM - All contexts.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18 * Clara, CA 95054 USA or visit http://www.sun.com if you need
19 * additional information or have any questions.
20 */
21
22
23/*******************************************************************************
24* Header Files *
25*******************************************************************************/
26#define LOG_GROUP LOG_GROUP_HWACCM
27#include <VBox/hwaccm.h>
28#include "HWACCMInternal.h"
29#include <VBox/vm.h>
30#include <VBox/x86.h>
31#include <VBox/hwacc_vmx.h>
32#include <VBox/hwacc_svm.h>
33#include <VBox/pgm.h>
34#include <VBox/pdm.h>
35#include <VBox/err.h>
36#include <VBox/log.h>
37#include <VBox/selm.h>
38#include <VBox/iom.h>
39#include <iprt/param.h>
40#include <iprt/assert.h>
41#include <iprt/asm.h>
42#include <iprt/string.h>
43#include <iprt/memobj.h>
44#include <iprt/cpuset.h>
45
46/**
47 * Invalidates a guest page
48 *
49 * @returns VBox status code.
50 * @param pVM The VM to operate on.
51 * @param GCVirt Page to invalidate
52 */
53VMMDECL(int) HWACCMInvalidatePage(PVM pVM, RTGCPTR GCVirt)
54{
55#ifdef IN_RING0
56 if (pVM->hwaccm.s.vmx.fSupported)
57 return VMXR0InvalidatePage(pVM, GCVirt);
58
59 Assert(pVM->hwaccm.s.svm.fSupported);
60 return SVMR0InvalidatePage(pVM, GCVirt);
61#endif
62
63 return VINF_SUCCESS;
64}
65
66/**
67 * Flushes the guest TLB
68 *
69 * @returns VBox status code.
70 * @param pVM The VM to operate on.
71 */
72VMMDECL(int) HWACCMFlushTLB(PVM pVM)
73{
74 LogFlow(("HWACCMFlushTLB\n"));
75
76 pVM->hwaccm.s.fForceTLBFlush = true;
77 STAM_COUNTER_INC(&pVM->hwaccm.s.StatFlushTLBManual);
78 return VINF_SUCCESS;
79}
80
81/**
82 * Checks if nested paging is enabled
83 *
84 * @returns boolean
85 * @param pVM The VM to operate on.
86 */
87VMMDECL(bool) HWACCMIsNestedPagingActive(PVM pVM)
88{
89 return HWACCMIsEnabled(pVM) && pVM->hwaccm.s.fNestedPaging;
90}
91
92/**
93 * Return the shadow paging mode for nested paging/ept
94 *
95 * @returns shadow paging mode
96 * @param pVM The VM to operate on.
97 */
98VMMDECL(PGMMODE) HWACCMGetPagingMode(PVM pVM)
99{
100 Assert(HWACCMIsNestedPagingActive(pVM));
101 if (pVM->hwaccm.s.svm.fSupported)
102 return PGMMODE_NESTED;
103 Assert(pVM->hwaccm.s.vmx.fSupported);
104 return PGMMODE_EPT;
105}
106
107/**
108 * Invalidates a guest page by physical address
109 *
110 * NOTE: Assumes the current instruction references this physical page though a virtual address!!
111 *
112 * @returns VBox status code.
113 * @param pVM The VM to operate on.
114 * @param GCPhys Page to invalidate
115 */
116VMMDECL(int) HWACCMInvalidatePhysPage(PVM pVM, RTGCPHYS GCPhys)
117{
118 if (!HWACCMIsNestedPagingActive(pVM))
119 return VINF_SUCCESS;
120
121#ifdef IN_RING0
122 if (pVM->hwaccm.s.vmx.fSupported)
123 return VMXR0InvalidatePhysPage(pVM, GCPhys);
124
125 Assert(pVM->hwaccm.s.svm.fSupported);
126 SVMR0InvalidatePhysPage(pVM, GCPhys);
127#else
128 HWACCMFlushTLB(pVM);
129#endif
130 return VINF_SUCCESS;
131}
132
133/**
134 * Checks if an interrupt event is currently pending.
135 *
136 * @returns Interrupt event pending state.
137 * @param pVM The VM to operate on.
138 */
139VMMDECL(bool) HWACCMHasPendingIrq(PVM pVM)
140{
141 return !!pVM->hwaccm.s.Event.fPending;
142}
143
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