/* $Id: GIMHv.cpp 72469 2018-06-07 11:35:23Z vboxsync $ */ /** @file * GIM - Guest Interface Manager, Hyper-V implementation. */ /* * Copyright (C) 2014-2017 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_GIM #include #include #include #include #include #include #include #include #include "GIMInternal.h" #include #include #include #include #include #include #include #include #ifdef DEBUG_ramshankar # include #endif /********************************************************************************************************************************* * Defined Constants And Macros * *********************************************************************************************************************************/ /** * GIM Hyper-V saved-state version. */ #define GIM_HV_SAVED_STATE_VERSION UINT32_C(4) /** Saved states, priot to saving debug UDP source/destination ports. */ #define GIM_HV_SAVED_STATE_VERSION_PRE_DEBUG_UDP_PORTS UINT32_C(3) /** Saved states, prior to any synthetic interrupt controller support. */ #define GIM_HV_SAVED_STATE_VERSION_PRE_SYNIC UINT32_C(2) /** Vanilla saved states, prior to any debug support. */ #define GIM_HV_SAVED_STATE_VERSION_PRE_DEBUG UINT32_C(1) #ifdef VBOX_WITH_STATISTICS # define GIMHV_MSRRANGE(a_uFirst, a_uLast, a_szName) \ { (a_uFirst), (a_uLast), kCpumMsrRdFn_Gim, kCpumMsrWrFn_Gim, 0, 0, 0, 0, 0, a_szName, { 0 }, { 0 }, { 0 }, { 0 } } #else # define GIMHV_MSRRANGE(a_uFirst, a_uLast, a_szName) \ { (a_uFirst), (a_uLast), kCpumMsrRdFn_Gim, kCpumMsrWrFn_Gim, 0, 0, 0, 0, 0, a_szName } #endif /********************************************************************************************************************************* * Global Variables * *********************************************************************************************************************************/ /** * Array of MSR ranges supported by Hyper-V. */ static CPUMMSRRANGE const g_aMsrRanges_HyperV[] = { GIMHV_MSRRANGE(MSR_GIM_HV_RANGE0_START, MSR_GIM_HV_RANGE0_END, "Hyper-V range 0"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE1_START, MSR_GIM_HV_RANGE1_END, "Hyper-V range 1"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE2_START, MSR_GIM_HV_RANGE2_END, "Hyper-V range 2"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE3_START, MSR_GIM_HV_RANGE3_END, "Hyper-V range 3"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE4_START, MSR_GIM_HV_RANGE4_END, "Hyper-V range 4"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE5_START, MSR_GIM_HV_RANGE5_END, "Hyper-V range 5"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE6_START, MSR_GIM_HV_RANGE6_END, "Hyper-V range 6"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE7_START, MSR_GIM_HV_RANGE7_END, "Hyper-V range 7"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE8_START, MSR_GIM_HV_RANGE8_END, "Hyper-V range 8"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE9_START, MSR_GIM_HV_RANGE9_END, "Hyper-V range 9"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE10_START, MSR_GIM_HV_RANGE10_END, "Hyper-V range 10"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE11_START, MSR_GIM_HV_RANGE11_END, "Hyper-V range 11"), GIMHV_MSRRANGE(MSR_GIM_HV_RANGE12_START, MSR_GIM_HV_RANGE12_END, "Hyper-V range 12") }; #undef GIMHV_MSRRANGE /** * DHCP OFFER packet response to the guest (client) over the Hyper-V debug * transport. * * - MAC: Destination: broadcast. * - MAC: Source: 00:00:00:00:01 (hypervisor). It's important that it's * different from the client's MAC address which is all 0's. * - IP: Source: 10.0.5.1 (hypervisor) * - IP: Destination: broadcast. * - IP: Checksum included. * - BOOTP: Client IP address: 10.0.5.5. * - BOOTP: Server IP address: 10.0.5.1. * - DHCP options: Subnet mask, router, lease-time, DHCP server identifier. * Options are kept to a minimum required for making Windows guests happy. */ #define GIMHV_DEBUGCLIENT_IPV4 RT_H2N_U32_C(0x0a000505) /* 10.0.5.5 */ #define GIMHV_DEBUGSERVER_IPV4 RT_H2N_U32_C(0x0a000501) /* 10.0.5.1 */ static const uint8_t g_abDhcpOffer[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x08, 0x00, 0x45, 0x10, 0x01, 0x28, 0x00, 0x00, 0x00, 0x00, 0x40, 0x11, 0x6a, 0xb5, 0x0a, 0x00, 0x05, 0x01, 0xff, 0xff, 0xff, 0xff, 0x00, 0x43, 0x00, 0x44, 0x01, 0x14, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x05, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x02, 0x01, 0x04, 0xff, 0xff, 0xff, 0x00, 0x03, 0x04, 0x0a, 0x00, 0x05, 0x01, 0x33, 0x04, 0xff, 0xff, 0xff, 0xff, 0x36, 0x04, 0x0a, 0x00, 0x05, 0x01, 0xff }; /** * DHCP ACK packet response to the guest (client) over the Hyper-V debug * transport. * * - MAC: Destination: 00:00:00:00:00 (client). * - IP: Destination: 10.0.5.5 (client). * - Rest are mostly similar to the DHCP offer. */ static const uint8_t g_abDhcpAck[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x08, 0x00, 0x45, 0x10, 0x01, 0x28, 0x00, 0x00, 0x00, 0x00, 0x40, 0x11, 0x5b, 0xb0, 0x0a, 0x00, 0x05, 0x01, 0x0a, 0x00, 0x05, 0x05, 0x00, 0x43, 0x00, 0x44, 0x01, 0x14, 0x00, 0x00, 0x02, 0x01, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x05, 0x05, 0x0a, 0x00, 0x05, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x05, 0x01, 0x04, 0xff, 0xff, 0xff, 0x00, 0x03, 0x04, 0x0a, 0x00, 0x05, 0x01, 0x33, 0x04, 0xff, 0xff, 0xff, 0xff, 0x36, 0x04, 0x0a, 0x00, 0x05, 0x01, 0xff }; /** * ARP reply to the guest (client) over the Hyper-V debug transport. * * - MAC: Destination: 00:00:00:00:00 (client) * - MAC: Source: 00:00:00:00:01 (hypervisor) * - ARP: Reply: 10.0.5.1 is at Source MAC address. */ static const uint8_t g_abArpReply[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x08, 0x06, 0x00, 0x01, 0x08, 0x00, 0x06, 0x04, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x0a, 0x00, 0x05, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x00, 0x05, 0x05 }; /********************************************************************************************************************************* * Internal Functions * *********************************************************************************************************************************/ static int gimR3HvInitHypercallSupport(PVM pVM); static void gimR3HvTermHypercallSupport(PVM pVM); static int gimR3HvInitDebugSupport(PVM pVM); static void gimR3HvTermDebugSupport(PVM pVM); static DECLCALLBACK(void) gimR3HvTimerCallback(PVM pVM, PTMTIMER pTimer, void *pvUser); /** * Initializes the Hyper-V GIM provider. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pGimCfg The GIM CFGM node. */ VMMR3_INT_DECL(int) gimR3HvInit(PVM pVM, PCFGMNODE pGimCfg) { AssertReturn(pVM, VERR_INVALID_PARAMETER); AssertReturn(pVM->gim.s.enmProviderId == GIMPROVIDERID_HYPERV, VERR_INTERNAL_ERROR_5); PGIMHV pHv = &pVM->gim.s.u.Hv; /* * Read configuration. */ PCFGMNODE pCfgHv = CFGMR3GetChild(pGimCfg, "HyperV"); if (pCfgHv) { /* * Validate the Hyper-V settings. */ int rc2 = CFGMR3ValidateConfig(pCfgHv, "/HyperV/", "VendorID" "|VSInterface" "|HypercallDebugInterface", "" /* pszValidNodes */, "GIM/HyperV" /* pszWho */, 0 /* uInstance */); if (RT_FAILURE(rc2)) return rc2; } /** @cfgm{/GIM/HyperV/VendorID, string, 'VBoxVBoxVBox'} * The Hyper-V vendor signature, must be 12 characters. */ char szVendor[13]; int rc = CFGMR3QueryStringDef(pCfgHv, "VendorID", szVendor, sizeof(szVendor), "VBoxVBoxVBox"); AssertLogRelRCReturn(rc, rc); AssertLogRelMsgReturn(strlen(szVendor) == 12, ("The VendorID config value must be exactly 12 chars, '%s' isn't!\n", szVendor), VERR_INVALID_PARAMETER); LogRel(("GIM: HyperV: Reporting vendor as '%s'\n", szVendor)); /** @todo r=bird: GIM_HV_VENDOR_MICROSOFT is 12 char and the string is max * 12+terminator, so the NCmp is a little bit misleading. */ if (!RTStrNCmp(szVendor, GIM_HV_VENDOR_MICROSOFT, sizeof(GIM_HV_VENDOR_MICROSOFT) - 1)) { LogRel(("GIM: HyperV: Warning! Posing as the Microsoft vendor may alter guest behaviour!\n")); pHv->fIsVendorMsHv = true; } /** @cfgm{/GIM/HyperV/VSInterface, bool, true} * The Microsoft virtualization service interface (debugging). */ rc = CFGMR3QueryBoolDef(pCfgHv, "VSInterface", &pHv->fIsInterfaceVs, false); AssertLogRelRCReturn(rc, rc); /** @cfgm{/GIM/HyperV/HypercallDebugInterface, bool, false} * Whether we specify the guest to use hypercalls for debugging rather than MSRs. */ rc = CFGMR3QueryBoolDef(pCfgHv, "HypercallDebugInterface", &pHv->fDbgHypercallInterface, false); AssertLogRelRCReturn(rc, rc); /* * Determine interface capabilities based on the version. */ if (!pVM->gim.s.u32Version) { /* Basic features. */ pHv->uBaseFeat = 0 //| GIM_HV_BASE_FEAT_VP_RUNTIME_MSR | GIM_HV_BASE_FEAT_PART_TIME_REF_COUNT_MSR //| GIM_HV_BASE_FEAT_BASIC_SYNIC_MSRS // Both required for synethetic timers //| GIM_HV_BASE_FEAT_STIMER_MSRS // Both required for synethetic timers | GIM_HV_BASE_FEAT_APIC_ACCESS_MSRS | GIM_HV_BASE_FEAT_HYPERCALL_MSRS | GIM_HV_BASE_FEAT_VP_ID_MSR | GIM_HV_BASE_FEAT_VIRT_SYS_RESET_MSR //| GIM_HV_BASE_FEAT_STAT_PAGES_MSR | GIM_HV_BASE_FEAT_PART_REF_TSC_MSR //| GIM_HV_BASE_FEAT_GUEST_IDLE_STATE_MSR | GIM_HV_BASE_FEAT_TIMER_FREQ_MSRS //| GIM_HV_BASE_FEAT_DEBUG_MSRS ; /* Miscellaneous features. */ pHv->uMiscFeat = 0 //| GIM_HV_MISC_FEAT_GUEST_DEBUGGING //| GIM_HV_MISC_FEAT_XMM_HYPERCALL_INPUT | GIM_HV_MISC_FEAT_TIMER_FREQ | GIM_HV_MISC_FEAT_GUEST_CRASH_MSRS //| GIM_HV_MISC_FEAT_DEBUG_MSRS ; /* Hypervisor recommendations to the guest. */ pHv->uHyperHints = GIM_HV_HINT_MSR_FOR_SYS_RESET | GIM_HV_HINT_RELAX_TIME_CHECKS | GIM_HV_HINT_X2APIC_MSRS ; /* Partition features. */ pHv->uPartFlags |= GIM_HV_PART_FLAGS_EXTENDED_HYPERCALLS; /* Expose more if we're posing as Microsoft. We can, if needed, force MSR-based Hv debugging by not exposing these bits while exposing the VS interface. The better way is what we do currently, via the GIM_HV_DEBUG_OPTIONS_USE_HYPERCALLS bit. */ if (pHv->fIsVendorMsHv) { pHv->uMiscFeat |= GIM_HV_MISC_FEAT_GUEST_DEBUGGING | GIM_HV_MISC_FEAT_DEBUG_MSRS; pHv->uPartFlags |= GIM_HV_PART_FLAGS_DEBUGGING; } } /* * Populate the required fields in MMIO2 region records for registering. */ AssertCompile(GIM_HV_PAGE_SIZE == PAGE_SIZE); PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX]; pRegion->iRegion = GIM_HV_HYPERCALL_PAGE_REGION_IDX; pRegion->fRCMapping = false; pRegion->cbRegion = PAGE_SIZE; /* Sanity checked in gimR3HvLoad(), gimR3HvEnableTscPage() & gimR3HvEnableHypercallPage() */ pRegion->GCPhysPage = NIL_RTGCPHYS; RTStrCopy(pRegion->szDescription, sizeof(pRegion->szDescription), "Hyper-V hypercall page"); pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX]; pRegion->iRegion = GIM_HV_REF_TSC_PAGE_REGION_IDX; pRegion->fRCMapping = false; pRegion->cbRegion = PAGE_SIZE; /* Sanity checked in gimR3HvLoad(), gimR3HvEnableTscPage() & gimR3HvEnableHypercallPage() */ pRegion->GCPhysPage = NIL_RTGCPHYS; RTStrCopy(pRegion->szDescription, sizeof(pRegion->szDescription), "Hyper-V TSC page"); /* * Make sure the CPU ID bit are in accordance to the Hyper-V * requirement and other paranoia checks. * See "Requirements for implementing the Microsoft hypervisor interface" spec. */ Assert(!(pHv->uPartFlags & ( GIM_HV_PART_FLAGS_CREATE_PART | GIM_HV_PART_FLAGS_ACCESS_MEMORY_POOL | GIM_HV_PART_FLAGS_ACCESS_PART_ID | GIM_HV_PART_FLAGS_ADJUST_MSG_BUFFERS | GIM_HV_PART_FLAGS_CREATE_PORT | GIM_HV_PART_FLAGS_ACCESS_STATS | GIM_HV_PART_FLAGS_CPU_MGMT | GIM_HV_PART_FLAGS_CPU_PROFILER))); Assert((pHv->uBaseFeat & (GIM_HV_BASE_FEAT_HYPERCALL_MSRS | GIM_HV_BASE_FEAT_VP_ID_MSR)) == (GIM_HV_BASE_FEAT_HYPERCALL_MSRS | GIM_HV_BASE_FEAT_VP_ID_MSR)); #ifdef VBOX_STRICT for (unsigned i = 0; i < RT_ELEMENTS(pHv->aMmio2Regions); i++) { PCGIMMMIO2REGION pCur = &pHv->aMmio2Regions[i]; Assert(!pCur->fRCMapping); Assert(!pCur->fMapped); Assert(pCur->GCPhysPage == NIL_RTGCPHYS); } #endif /* * Expose HVP (Hypervisor Present) bit to the guest. */ CPUMR3SetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_HVP); /* * Modify the standard hypervisor leaves for Hyper-V. */ CPUMCPUIDLEAF HyperLeaf; RT_ZERO(HyperLeaf); HyperLeaf.uLeaf = UINT32_C(0x40000000); if ( pHv->fIsVendorMsHv && pHv->fIsInterfaceVs) HyperLeaf.uEax = UINT32_C(0x40000082); /* Since we expose 0x40000082 below for the Hyper-V PV-debugging case. */ else HyperLeaf.uEax = UINT32_C(0x40000006); /* Minimum value for Hyper-V default is 0x40000005. */ /* * Don't report vendor as 'Microsoft Hv'[1] by default, see @bugref{7270#c152}. * [1]: ebx=0x7263694d ('rciM') ecx=0x666f736f ('foso') edx=0x76482074 ('vH t') */ { uint32_t uVendorEbx; uint32_t uVendorEcx; uint32_t uVendorEdx; uVendorEbx = ((uint32_t)szVendor[ 3]) << 24 | ((uint32_t)szVendor[ 2]) << 16 | ((uint32_t)szVendor[1]) << 8 | (uint32_t)szVendor[ 0]; uVendorEcx = ((uint32_t)szVendor[ 7]) << 24 | ((uint32_t)szVendor[ 6]) << 16 | ((uint32_t)szVendor[5]) << 8 | (uint32_t)szVendor[ 4]; uVendorEdx = ((uint32_t)szVendor[11]) << 24 | ((uint32_t)szVendor[10]) << 16 | ((uint32_t)szVendor[9]) << 8 | (uint32_t)szVendor[ 8]; HyperLeaf.uEbx = uVendorEbx; HyperLeaf.uEcx = uVendorEcx; HyperLeaf.uEdx = uVendorEdx; } rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); HyperLeaf.uLeaf = UINT32_C(0x40000001); HyperLeaf.uEax = 0x31237648; /* 'Hv#1' */ HyperLeaf.uEbx = 0; /* Reserved */ HyperLeaf.uEcx = 0; /* Reserved */ HyperLeaf.uEdx = 0; /* Reserved */ rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); /* * Add Hyper-V specific leaves. */ HyperLeaf.uLeaf = UINT32_C(0x40000002); /* MBZ until MSR_GIM_HV_GUEST_OS_ID is set by the guest. */ HyperLeaf.uEax = 0; HyperLeaf.uEbx = 0; HyperLeaf.uEcx = 0; HyperLeaf.uEdx = 0; rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); HyperLeaf.uLeaf = UINT32_C(0x40000003); HyperLeaf.uEax = pHv->uBaseFeat; HyperLeaf.uEbx = pHv->uPartFlags; HyperLeaf.uEcx = pHv->uPowMgmtFeat; HyperLeaf.uEdx = pHv->uMiscFeat; rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); HyperLeaf.uLeaf = UINT32_C(0x40000004); HyperLeaf.uEax = pHv->uHyperHints; HyperLeaf.uEbx = 0xffffffff; HyperLeaf.uEcx = 0; HyperLeaf.uEdx = 0; rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); RT_ZERO(HyperLeaf); HyperLeaf.uLeaf = UINT32_C(0x40000005); rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); /* Leaf 0x40000006 is inserted in gimR3HvInitCompleted(). */ if ( pHv->fIsVendorMsHv && pHv->fIsInterfaceVs) { HyperLeaf.uLeaf = UINT32_C(0x40000080); HyperLeaf.uEax = 0; HyperLeaf.uEbx = 0x7263694d; /* 'rciM' */ HyperLeaf.uEcx = 0x666f736f; /* 'foso'*/ HyperLeaf.uEdx = 0x53562074; /* 'SV t' */ rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); HyperLeaf.uLeaf = UINT32_C(0x40000081); HyperLeaf.uEax = 0x31235356; /* '1#SV' */ HyperLeaf.uEbx = 0; HyperLeaf.uEcx = 0; HyperLeaf.uEdx = 0; rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); HyperLeaf.uLeaf = UINT32_C(0x40000082); HyperLeaf.uEax = RT_BIT_32(1); HyperLeaf.uEbx = 0; HyperLeaf.uEcx = 0; HyperLeaf.uEdx = 0; rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); } /* * Insert all MSR ranges of Hyper-V. */ for (unsigned i = 0; i < RT_ELEMENTS(g_aMsrRanges_HyperV); i++) { int rc2 = CPUMR3MsrRangesInsert(pVM, &g_aMsrRanges_HyperV[i]); AssertLogRelRCReturn(rc2, rc2); } /* * Setup non-zero MSRs. */ if (pHv->uMiscFeat & GIM_HV_MISC_FEAT_GUEST_CRASH_MSRS) pHv->uCrashCtlMsr = MSR_GIM_HV_CRASH_CTL_NOTIFY; for (VMCPUID i = 0; i < pVM->cCpus; i++) { PGIMHVCPU pHvCpu = &pVM->aCpus[i].gim.s.u.HvCpu; for (uint8_t idxSintMsr = 0; idxSintMsr < RT_ELEMENTS(pHvCpu->auSintMsrs); idxSintMsr++) pHvCpu->auSintMsrs[idxSintMsr] = MSR_GIM_HV_SINT_MASKED; } /* * Setup hypercall support. */ rc = gimR3HvInitHypercallSupport(pVM); AssertLogRelRCReturn(rc, rc); /* * Setup debug support. */ rc = gimR3HvInitDebugSupport(pVM); AssertLogRelRCReturn(rc, rc); /* * Setup up the per-VCPU synthetic timers. */ if ( (pHv->uBaseFeat & GIM_HV_BASE_FEAT_STIMER_MSRS) || (pHv->uBaseFeat & GIM_HV_BASE_FEAT_BASIC_SYNIC_MSRS)) { for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PVMCPU pVCpu = &pVM->aCpus[idCpu]; PGIMHVCPU pHvCpu = &pVCpu->gim.s.u.HvCpu; for (uint8_t idxStimer = 0; idxStimer < RT_ELEMENTS(pHvCpu->aStimers); idxStimer++) { PGIMHVSTIMER pHvStimer = &pHvCpu->aStimers[idxStimer]; /* Associate the synthetic timer with its corresponding VCPU. */ pHvStimer->idCpu = pVCpu->idCpu; pHvStimer->idxStimer = idxStimer; /* Create the timer and associate the context pointers. */ RTStrPrintf(&pHvStimer->szTimerDesc[0], sizeof(pHvStimer->szTimerDesc), "Hyper-V[%u] Timer%u", pVCpu->idCpu, idxStimer); rc = TMR3TimerCreateInternal(pVM, TMCLOCK_VIRTUAL_SYNC, gimR3HvTimerCallback, pHvStimer /* pvUser */, pHvStimer->szTimerDesc, &pHvStimer->pTimerR3); AssertLogRelRCReturn(rc, rc); pHvStimer->pTimerR0 = TMTimerR0Ptr(pHvStimer->pTimerR3); pHvStimer->pTimerRC = TMTimerRCPtr(pHvStimer->pTimerR3); } } } /* * Register statistics. */ for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PVMCPU pVCpu = &pVM->aCpus[idCpu]; PGIMHVCPU pHvCpu = &pVCpu->gim.s.u.HvCpu; for (size_t idxStimer = 0; idxStimer < RT_ELEMENTS(pHvCpu->aStatStimerFired); idxStimer++) { int rc2 = STAMR3RegisterF(pVM, &pHvCpu->aStatStimerFired[idxStimer], STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Number of times the synthetic timer fired.", "/GIM/HyperV/%u/Stimer%u_Fired", idCpu, idxStimer); AssertLogRelRCReturn(rc2, rc2); } } return VINF_SUCCESS; } /** * Initializes remaining bits of the Hyper-V provider. * * This is called after initializing HM and almost all other VMM components. * * @returns VBox status code. * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(int) gimR3HvInitCompleted(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; pHv->cTscTicksPerSecond = TMCpuTicksPerSecond(pVM); /* * Determine interface capabilities based on the version. */ if (!pVM->gim.s.u32Version) { /* Hypervisor capabilities; features used by the hypervisor. */ pHv->uHyperCaps = HMIsNestedPagingActive(pVM) ? GIM_HV_HOST_FEAT_NESTED_PAGING : 0; pHv->uHyperCaps |= HMAreMsrBitmapsAvailable(pVM) ? GIM_HV_HOST_FEAT_MSR_BITMAP : 0; } CPUMCPUIDLEAF HyperLeaf; RT_ZERO(HyperLeaf); HyperLeaf.uLeaf = UINT32_C(0x40000006); HyperLeaf.uEax = pHv->uHyperCaps; HyperLeaf.uEbx = 0; HyperLeaf.uEcx = 0; HyperLeaf.uEdx = 0; int rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf); AssertLogRelRCReturn(rc, rc); /* * Inform APIC whether Hyper-V compatibility mode is enabled or not. * Do this here rather than on gimR3HvInit() as it gets called after APIC * has finished inserting/removing the x2APIC MSR range. */ if (pHv->uHyperHints & GIM_HV_HINT_X2APIC_MSRS) APICR3HvSetCompatMode(pVM, true); return rc; } /** * Terminates the Hyper-V GIM provider. * * @returns VBox status code. * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(int) gimR3HvTerm(PVM pVM) { gimR3HvReset(pVM); gimR3HvTermHypercallSupport(pVM); gimR3HvTermDebugSupport(pVM); PCGIMHV pHv = &pVM->gim.s.u.Hv; if ( (pHv->uBaseFeat & GIM_HV_BASE_FEAT_STIMER_MSRS) || (pHv->uBaseFeat & GIM_HV_BASE_FEAT_BASIC_SYNIC_MSRS)) { for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PGIMHVCPU pHvCpu = &pVM->aCpus[idCpu].gim.s.u.HvCpu; for (uint8_t idxStimer = 0; idxStimer < RT_ELEMENTS(pHvCpu->aStimers); idxStimer++) { PGIMHVSTIMER pHvStimer = &pHvCpu->aStimers[idxStimer]; TMR3TimerDestroy(pHvStimer->pTimerR3); } } } return VINF_SUCCESS; } /** * Applies relocations to data and code managed by this * component. This function will be called at init and * whenever the VMM need to relocate it self inside the GC. * * @param pVM The cross context VM structure. * @param offDelta Relocation delta relative to old location. */ VMMR3_INT_DECL(void) gimR3HvRelocate(PVM pVM, RTGCINTPTR offDelta) { RT_NOREF1(offDelta); PCGIMHV pHv = &pVM->gim.s.u.Hv; if ( (pHv->uBaseFeat & GIM_HV_BASE_FEAT_STIMER_MSRS) || (pHv->uBaseFeat & GIM_HV_BASE_FEAT_BASIC_SYNIC_MSRS)) { for (VMCPUID idCpu = 0; idCpu < pVM->cCpus; idCpu++) { PGIMHVCPU pHvCpu = &pVM->aCpus[idCpu].gim.s.u.HvCpu; for (uint8_t idxStimer = 0; idxStimer < RT_ELEMENTS(pHvCpu->aStimers); idxStimer++) { PGIMHVSTIMER pHvStimer = &pHvCpu->aStimers[idxStimer]; pHvStimer->pTimerRC = TMTimerRCPtr(pHvStimer->pTimerR3); } } } } /** * This resets Hyper-V provider MSRs and unmaps whatever Hyper-V regions that * the guest may have mapped. * * This is called when the VM is being reset. * * @param pVM The cross context VM structure. * * @thread EMT(0) */ VMMR3_INT_DECL(void) gimR3HvReset(PVM pVM) { VM_ASSERT_EMT0(pVM); /* * Unmap MMIO2 pages that the guest may have setup. */ LogRel(("GIM: HyperV: Resetting MMIO2 regions and MSRs\n")); PGIMHV pHv = &pVM->gim.s.u.Hv; for (unsigned i = 0; i < RT_ELEMENTS(pHv->aMmio2Regions); i++) { PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[i]; #if 0 gimR3Mmio2Unmap(pVM, pRegion); #else pRegion->fMapped = false; pRegion->GCPhysPage = NIL_RTGCPHYS; #endif } /* * Reset MSRs. */ pHv->u64GuestOsIdMsr = 0; pHv->u64HypercallMsr = 0; pHv->u64TscPageMsr = 0; pHv->uCrashP0Msr = 0; pHv->uCrashP1Msr = 0; pHv->uCrashP2Msr = 0; pHv->uCrashP3Msr = 0; pHv->uCrashP4Msr = 0; pHv->uDbgStatusMsr = 0; pHv->uDbgPendingBufferMsr = 0; pHv->uDbgSendBufferMsr = 0; pHv->uDbgRecvBufferMsr = 0; for (VMCPUID i = 0; i < pVM->cCpus; i++) { PGIMHVCPU pHvCpu = &pVM->aCpus[i].gim.s.u.HvCpu; pHvCpu->uSControlMsr = 0; pHvCpu->uSimpMsr = 0; pHvCpu->uSiefpMsr = 0; pHvCpu->uApicAssistPageMsr = 0; for (uint8_t idxSint = 0; idxSint < RT_ELEMENTS(pHvCpu->auSintMsrs); idxSint++) pHvCpu->auSintMsrs[idxSint] = MSR_GIM_HV_SINT_MASKED; for (uint8_t idxStimer = 0; idxStimer < RT_ELEMENTS(pHvCpu->aStimers); idxStimer++) { PGIMHVSTIMER pHvStimer = &pHvCpu->aStimers[idxStimer]; pHvStimer->uStimerConfigMsr = 0; pHvStimer->uStimerCountMsr = 0; } } } /** * Returns a pointer to the MMIO2 regions supported by Hyper-V. * * @returns Pointer to an array of MMIO2 regions. * @param pVM The cross context VM structure. * @param pcRegions Where to store the number of regions in the array. */ VMMR3_INT_DECL(PGIMMMIO2REGION) gimR3HvGetMmio2Regions(PVM pVM, uint32_t *pcRegions) { Assert(GIMIsEnabled(pVM)); PGIMHV pHv = &pVM->gim.s.u.Hv; *pcRegions = RT_ELEMENTS(pHv->aMmio2Regions); Assert(*pcRegions <= UINT8_MAX); /* See PGMR3PhysMMIO2Register(). */ return pHv->aMmio2Regions; } /** * Callback for when debug data is available over the debugger connection. * * @param pVM The cross context VM structure. */ static DECLCALLBACK(void) gimR3HvDebugBufAvail(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; RTGCPHYS GCPhysPendingBuffer = pHv->uDbgPendingBufferMsr; if ( GCPhysPendingBuffer && PGMPhysIsGCPhysNormal(pVM, GCPhysPendingBuffer)) { uint8_t bPendingData = 1; int rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysPendingBuffer, &bPendingData, sizeof(bPendingData)); if (RT_FAILURE(rc)) { LogRelMax(5, ("GIM: HyperV: Failed to set pending debug receive buffer at %#RGp, rc=%Rrc\n", GCPhysPendingBuffer, rc)); } } } /** * Callback for when debug data has been read from the debugger connection. * * This will be invoked before signalling read of the next debug buffer. * * @param pVM The cross context VM structure. */ static DECLCALLBACK(void) gimR3HvDebugBufReadCompleted(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; RTGCPHYS GCPhysPendingBuffer = pHv->uDbgPendingBufferMsr; if ( GCPhysPendingBuffer && PGMPhysIsGCPhysNormal(pVM, GCPhysPendingBuffer)) { uint8_t bPendingData = 0; int rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysPendingBuffer, &bPendingData, sizeof(bPendingData)); if (RT_FAILURE(rc)) { LogRelMax(5, ("GIM: HyperV: Failed to clear pending debug receive buffer at %#RGp, rc=%Rrc\n", GCPhysPendingBuffer, rc)); } } } /** * Get Hyper-V debug setup parameters. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pDbgSetup Where to store the debug setup details. */ VMMR3_INT_DECL(int) gimR3HvGetDebugSetup(PVM pVM, PGIMDEBUGSETUP pDbgSetup) { Assert(pDbgSetup); PGIMHV pHv = &pVM->gim.s.u.Hv; if (pHv->fDbgEnabled) { pDbgSetup->pfnDbgRecvBufAvail = gimR3HvDebugBufAvail; pDbgSetup->cbDbgRecvBuf = GIM_HV_PAGE_SIZE; return VINF_SUCCESS; } return VERR_GIM_NO_DEBUG_CONNECTION; } /** * Hyper-V state-save operation. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pSSM The saved state handle. */ VMMR3_INT_DECL(int) gimR3HvSave(PVM pVM, PSSMHANDLE pSSM) { PCGIMHV pHv = &pVM->gim.s.u.Hv; /* * Save the Hyper-V SSM version. */ SSMR3PutU32(pSSM, GIM_HV_SAVED_STATE_VERSION); /* * Save per-VM MSRs. */ SSMR3PutU64(pSSM, pHv->u64GuestOsIdMsr); SSMR3PutU64(pSSM, pHv->u64HypercallMsr); SSMR3PutU64(pSSM, pHv->u64TscPageMsr); /* * Save Hyper-V features / capabilities. */ SSMR3PutU32(pSSM, pHv->uBaseFeat); SSMR3PutU32(pSSM, pHv->uPartFlags); SSMR3PutU32(pSSM, pHv->uPowMgmtFeat); SSMR3PutU32(pSSM, pHv->uMiscFeat); SSMR3PutU32(pSSM, pHv->uHyperHints); SSMR3PutU32(pSSM, pHv->uHyperCaps); /* * Save the Hypercall region. */ PCGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX]; SSMR3PutU8(pSSM, pRegion->iRegion); SSMR3PutBool(pSSM, pRegion->fRCMapping); SSMR3PutU32(pSSM, pRegion->cbRegion); SSMR3PutGCPhys(pSSM, pRegion->GCPhysPage); SSMR3PutStrZ(pSSM, pRegion->szDescription); /* * Save the reference TSC region. */ pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX]; SSMR3PutU8(pSSM, pRegion->iRegion); SSMR3PutBool(pSSM, pRegion->fRCMapping); SSMR3PutU32(pSSM, pRegion->cbRegion); SSMR3PutGCPhys(pSSM, pRegion->GCPhysPage); SSMR3PutStrZ(pSSM, pRegion->szDescription); /* Save the TSC sequence so we can bump it on restore (as the CPU frequency/offset may change). */ uint32_t uTscSequence = 0; if ( pRegion->fMapped && MSR_GIM_HV_REF_TSC_IS_ENABLED(pHv->u64TscPageMsr)) { PCGIMHVREFTSC pRefTsc = (PCGIMHVREFTSC)pRegion->pvPageR3; uTscSequence = pRefTsc->u32TscSequence; } SSMR3PutU32(pSSM, uTscSequence); /* * Save debug support data. */ SSMR3PutU64(pSSM, pHv->uDbgPendingBufferMsr); SSMR3PutU64(pSSM, pHv->uDbgSendBufferMsr); SSMR3PutU64(pSSM, pHv->uDbgRecvBufferMsr); SSMR3PutU64(pSSM, pHv->uDbgStatusMsr); SSMR3PutU32(pSSM, pHv->enmDbgReply); SSMR3PutU32(pSSM, pHv->uDbgBootpXId); SSMR3PutU32(pSSM, pHv->DbgGuestIp4Addr.u); SSMR3PutU16(pSSM, pHv->uUdpGuestDstPort); SSMR3PutU16(pSSM, pHv->uUdpGuestSrcPort); for (VMCPUID i = 0; i < pVM->cCpus; i++) { PGIMHVCPU pHvCpu = &pVM->aCpus[i].gim.s.u.HvCpu; SSMR3PutU64(pSSM, pHvCpu->uSimpMsr); for (size_t idxSintMsr = 0; idxSintMsr < RT_ELEMENTS(pHvCpu->auSintMsrs); idxSintMsr++) SSMR3PutU64(pSSM, pHvCpu->auSintMsrs[idxSintMsr]); } return SSMR3PutU8(pSSM, UINT8_MAX); } /** * Hyper-V state-load operation, final pass. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pSSM The saved state handle. */ VMMR3_INT_DECL(int) gimR3HvLoad(PVM pVM, PSSMHANDLE pSSM) { /* * Load the Hyper-V SSM version first. */ uint32_t uHvSavedStateVersion; int rc = SSMR3GetU32(pSSM, &uHvSavedStateVersion); AssertRCReturn(rc, rc); if ( uHvSavedStateVersion != GIM_HV_SAVED_STATE_VERSION && uHvSavedStateVersion != GIM_HV_SAVED_STATE_VERSION_PRE_DEBUG_UDP_PORTS && uHvSavedStateVersion != GIM_HV_SAVED_STATE_VERSION_PRE_SYNIC && uHvSavedStateVersion != GIM_HV_SAVED_STATE_VERSION_PRE_DEBUG) return SSMR3SetLoadError(pSSM, VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION, RT_SRC_POS, N_("Unsupported Hyper-V saved-state version %u (current %u)!"), uHvSavedStateVersion, GIM_HV_SAVED_STATE_VERSION); /* * Update the TSC frequency from TM. */ PGIMHV pHv = &pVM->gim.s.u.Hv; pHv->cTscTicksPerSecond = TMCpuTicksPerSecond(pVM); /* * Load per-VM MSRs. */ SSMR3GetU64(pSSM, &pHv->u64GuestOsIdMsr); SSMR3GetU64(pSSM, &pHv->u64HypercallMsr); SSMR3GetU64(pSSM, &pHv->u64TscPageMsr); /* * Load Hyper-V features / capabilities. */ SSMR3GetU32(pSSM, &pHv->uBaseFeat); SSMR3GetU32(pSSM, &pHv->uPartFlags); SSMR3GetU32(pSSM, &pHv->uPowMgmtFeat); SSMR3GetU32(pSSM, &pHv->uMiscFeat); SSMR3GetU32(pSSM, &pHv->uHyperHints); SSMR3GetU32(pSSM, &pHv->uHyperCaps); /* * Load and enable the Hypercall region. */ PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX]; SSMR3GetU8(pSSM, &pRegion->iRegion); SSMR3GetBool(pSSM, &pRegion->fRCMapping); SSMR3GetU32(pSSM, &pRegion->cbRegion); SSMR3GetGCPhys(pSSM, &pRegion->GCPhysPage); rc = SSMR3GetStrZ(pSSM, pRegion->szDescription, sizeof(pRegion->szDescription)); AssertRCReturn(rc, rc); if (pRegion->cbRegion != PAGE_SIZE) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Hypercall page region size %u invalid, expected %u"), pRegion->cbRegion, PAGE_SIZE); if (MSR_GIM_HV_HYPERCALL_PAGE_IS_ENABLED(pHv->u64HypercallMsr)) { Assert(pRegion->GCPhysPage != NIL_RTGCPHYS); if (RT_LIKELY(pRegion->fRegistered)) { rc = gimR3HvEnableHypercallPage(pVM, pRegion->GCPhysPage); if (RT_FAILURE(rc)) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to enable the hypercall page. GCPhys=%#RGp rc=%Rrc"), pRegion->GCPhysPage, rc); } else return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Hypercall MMIO2 region not registered. Missing GIM device?!")); } /* * Load and enable the reference TSC region. */ uint32_t uTscSequence; pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX]; SSMR3GetU8(pSSM, &pRegion->iRegion); SSMR3GetBool(pSSM, &pRegion->fRCMapping); SSMR3GetU32(pSSM, &pRegion->cbRegion); SSMR3GetGCPhys(pSSM, &pRegion->GCPhysPage); SSMR3GetStrZ(pSSM, pRegion->szDescription, sizeof(pRegion->szDescription)); rc = SSMR3GetU32(pSSM, &uTscSequence); AssertRCReturn(rc, rc); if (pRegion->cbRegion != PAGE_SIZE) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("TSC page region size %u invalid, expected %u"), pRegion->cbRegion, PAGE_SIZE); if (MSR_GIM_HV_REF_TSC_IS_ENABLED(pHv->u64TscPageMsr)) { Assert(pRegion->GCPhysPage != NIL_RTGCPHYS); if (pRegion->fRegistered) { rc = gimR3HvEnableTscPage(pVM, pRegion->GCPhysPage, true /* fUseThisTscSeq */, uTscSequence); if (RT_FAILURE(rc)) return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to enable the TSC page. GCPhys=%#RGp rc=%Rrc"), pRegion->GCPhysPage, rc); } else return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("TSC-page MMIO2 region not registered. Missing GIM device?!")); } /* * Load the debug support data. */ if (uHvSavedStateVersion > GIM_HV_SAVED_STATE_VERSION_PRE_DEBUG) { SSMR3GetU64(pSSM, &pHv->uDbgPendingBufferMsr); SSMR3GetU64(pSSM, &pHv->uDbgSendBufferMsr); SSMR3GetU64(pSSM, &pHv->uDbgRecvBufferMsr); SSMR3GetU64(pSSM, &pHv->uDbgStatusMsr); SSMR3GetU32(pSSM, (uint32_t *)&pHv->enmDbgReply); SSMR3GetU32(pSSM, &pHv->uDbgBootpXId); rc = SSMR3GetU32(pSSM, &pHv->DbgGuestIp4Addr.u); AssertRCReturn(rc, rc); if (uHvSavedStateVersion > GIM_HV_SAVED_STATE_VERSION_PRE_DEBUG_UDP_PORTS) { rc = SSMR3GetU16(pSSM, &pHv->uUdpGuestDstPort); AssertRCReturn(rc, rc); rc = SSMR3GetU16(pSSM, &pHv->uUdpGuestSrcPort); AssertRCReturn(rc, rc); } for (VMCPUID i = 0; i < pVM->cCpus; i++) { PGIMHVCPU pHvCpu = &pVM->aCpus[i].gim.s.u.HvCpu; SSMR3GetU64(pSSM, &pHvCpu->uSimpMsr); if (uHvSavedStateVersion <= GIM_HV_SAVED_STATE_VERSION_PRE_SYNIC) SSMR3GetU64(pSSM, &pHvCpu->auSintMsrs[GIM_HV_VMBUS_MSG_SINT]); else { for (uint8_t idxSintMsr = 0; idxSintMsr < RT_ELEMENTS(pHvCpu->auSintMsrs); idxSintMsr++) SSMR3GetU64(pSSM, &pHvCpu->auSintMsrs[idxSintMsr]); } } uint8_t bDelim; rc = SSMR3GetU8(pSSM, &bDelim); } else rc = VINF_SUCCESS; return rc; } /** * Hyper-V load-done callback. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pSSM The saved state handle. */ VMMR3_INT_DECL(int) gimR3HvLoadDone(PVM pVM, PSSMHANDLE pSSM) { if (RT_SUCCESS(SSMR3HandleGetStatus(pSSM))) { /* * Update EM on whether MSR_GIM_HV_GUEST_OS_ID allows hypercall instructions. */ if (pVM->gim.s.u.Hv.u64GuestOsIdMsr) for (VMCPUID i = 0; i < pVM->cCpus; i++) EMSetHypercallInstructionsEnabled(&pVM->aCpus[i], true); else for (VMCPUID i = 0; i < pVM->cCpus; i++) EMSetHypercallInstructionsEnabled(&pVM->aCpus[i], false); } return VINF_SUCCESS; } /** * Enables the Hyper-V APIC-assist page. * * @returns VBox status code. * @param pVCpu The cross context virtual CPU structure. * @param GCPhysApicAssistPage Where to map the APIC-assist page. */ VMMR3_INT_DECL(int) gimR3HvEnableApicAssistPage(PVMCPU pVCpu, RTGCPHYS GCPhysApicAssistPage) { PVM pVM = pVCpu->CTX_SUFF(pVM); PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3; AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED); /* * Map the APIC-assist-page at the specified address. */ /** @todo this is buggy when large pages are used due to a PGM limitation, see * @bugref{7532}. Instead of the overlay style mapping, we just * rewrite guest memory directly. */ size_t const cbApicAssistPage = PAGE_SIZE; void *pvApicAssist = RTMemAllocZ(cbApicAssistPage); if (RT_LIKELY(pvApicAssist)) { int rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysApicAssistPage, pvApicAssist, cbApicAssistPage); if (RT_SUCCESS(rc)) { /** @todo Inform APIC. */ LogRel(("GIM%u: HyperV: Enabled APIC-assist page at %#RGp\n", pVCpu->idCpu, GCPhysApicAssistPage)); } else { LogRelFunc(("GIM%u: HyperV: PGMPhysSimpleWriteGCPhys failed. rc=%Rrc\n", pVCpu->idCpu, rc)); rc = VERR_GIM_OPERATION_FAILED; } RTMemFree(pvApicAssist); return rc; } LogRelFunc(("GIM%u: HyperV: Failed to alloc %u bytes\n", pVCpu->idCpu, cbApicAssistPage)); return VERR_NO_MEMORY; } /** * Disables the Hyper-V APIC-assist page. * * @returns VBox status code. * @param pVCpu The cross context virtual CPU structure. */ VMMR3_INT_DECL(int) gimR3HvDisableApicAssistPage(PVMCPU pVCpu) { LogRel(("GIM%u: HyperV: Disabled APIC-assist page\n", pVCpu->idCpu)); /** @todo inform APIC */ return VINF_SUCCESS; } /** * Hyper-V synthetic timer callback. * * @param pVM The cross context VM structure. * @param pTimer Pointer to timer. * @param pvUser Pointer to the synthetic timer. */ static DECLCALLBACK(void) gimR3HvTimerCallback(PVM pVM, PTMTIMER pTimer, void *pvUser) { PGIMHVSTIMER pHvStimer = (PGIMHVSTIMER)pvUser; Assert(pHvStimer); Assert(TMTimerIsLockOwner(pTimer)); RT_NOREF(pTimer); Assert(pHvStimer->idCpu < pVM->cCpus); PVMCPU pVCpu = &pVM->aCpus[pHvStimer->idCpu]; PGIMHVCPU pHvCpu = &pVCpu->gim.s.u.HvCpu; Assert(pHvStimer->idxStimer < RT_ELEMENTS(pHvCpu->aStatStimerFired)); STAM_COUNTER_INC(&pHvCpu->aStatStimerFired[pHvStimer->idxStimer]); uint64_t const uStimerConfig = pHvStimer->uStimerConfigMsr; uint16_t const idxSint = MSR_GIM_HV_STIMER_GET_SINTX(uStimerConfig); if (RT_LIKELY(idxSint < RT_ELEMENTS(pHvCpu->auSintMsrs))) { uint64_t const uSint = pHvCpu->auSintMsrs[idxSint]; if (!MSR_GIM_HV_SINT_IS_MASKED(uSint)) { uint8_t const uVector = MSR_GIM_HV_SINT_GET_VECTOR(uSint); bool const fAutoEoi = MSR_GIM_HV_SINT_IS_AUTOEOI(uSint); APICHvSendInterrupt(pVCpu, uVector, fAutoEoi, XAPICTRIGGERMODE_EDGE); } } /* Re-arm the timer if it's periodic. */ if (MSR_GIM_HV_STIMER_IS_PERIODIC(uStimerConfig)) gimHvStartStimer(pVCpu, pHvStimer); } /** * Enables the Hyper-V SIEF page. * * @returns VBox status code. * @param pVCpu The cross context virtual CPU structure. * @param GCPhysSiefPage Where to map the SIEF page. */ VMMR3_INT_DECL(int) gimR3HvEnableSiefPage(PVMCPU pVCpu, RTGCPHYS GCPhysSiefPage) { PVM pVM = pVCpu->CTX_SUFF(pVM); PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3; AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED); /* * Map the SIEF page at the specified address. */ /** @todo this is buggy when large pages are used due to a PGM limitation, see * @bugref{7532}. Instead of the overlay style mapping, we just * rewrite guest memory directly. */ size_t const cbSiefPage = PAGE_SIZE; void *pvSiefPage = RTMemAllocZ(cbSiefPage); if (RT_LIKELY(pvSiefPage)) { int rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysSiefPage, pvSiefPage, cbSiefPage); if (RT_SUCCESS(rc)) { /** @todo SIEF setup. */ LogRel(("GIM%u: HyperV: Enabled SIEF page at %#RGp\n", pVCpu->idCpu, GCPhysSiefPage)); } else { LogRelFunc(("GIM%u: HyperV: PGMPhysSimpleWriteGCPhys failed. rc=%Rrc\n", pVCpu->idCpu, rc)); rc = VERR_GIM_OPERATION_FAILED; } RTMemFree(pvSiefPage); return rc; } LogRelFunc(("GIM%u: HyperV: Failed to alloc %u bytes\n", pVCpu->idCpu, cbSiefPage)); return VERR_NO_MEMORY; } /** * Disables the Hyper-V SIEF page. * * @returns VBox status code. * @param pVCpu The cross context virtual CPU structure. */ VMMR3_INT_DECL(int) gimR3HvDisableSiefPage(PVMCPU pVCpu) { LogRel(("GIM%u: HyperV: Disabled APIC-assist page\n", pVCpu->idCpu)); /** @todo SIEF teardown. */ return VINF_SUCCESS; } /** * Enables the Hyper-V TSC page. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param GCPhysTscPage Where to map the TSC page. * @param fUseThisTscSeq Whether to set the TSC sequence number to the one * specified in @a uTscSeq. * @param uTscSeq The TSC sequence value to use. Ignored if * @a fUseThisTscSeq is false. */ VMMR3_INT_DECL(int) gimR3HvEnableTscPage(PVM pVM, RTGCPHYS GCPhysTscPage, bool fUseThisTscSeq, uint32_t uTscSeq) { PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3; PGIMMMIO2REGION pRegion = &pVM->gim.s.u.Hv.aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX]; AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED); int rc; if (pRegion->fMapped) { /* * Is it already enabled at the given guest-address? */ if (pRegion->GCPhysPage == GCPhysTscPage) return VINF_SUCCESS; /* * If it's mapped at a different address, unmap the previous address. */ rc = gimR3HvDisableTscPage(pVM); AssertRC(rc); } /* * Map the TSC-page at the specified address. */ Assert(!pRegion->fMapped); /** @todo this is buggy when large pages are used due to a PGM limitation, see * @bugref{7532}. Instead of the overlay style mapping, we just * rewrite guest memory directly. */ #if 0 rc = gimR3Mmio2Map(pVM, pRegion, GCPhysTscPage); if (RT_SUCCESS(rc)) { Assert(pRegion->GCPhysPage == GCPhysTscPage); /* * Update the TSC scale. Windows guests expect a non-zero TSC sequence, otherwise * they fallback to using the reference count MSR which is not ideal in terms of VM-exits. * * Also, Hyper-V normalizes the time in 10 MHz, see: * http://technet.microsoft.com/it-it/sysinternals/dn553408%28v=vs.110%29 */ PGIMHVREFTSC pRefTsc = (PGIMHVREFTSC)pRegion->pvPageR3; Assert(pRefTsc); PGIMHV pHv = &pVM->gim.s.u.Hv; uint64_t const u64TscKHz = pHv->cTscTicksPerSecond / UINT64_C(1000); uint32_t u32TscSeq = 1; if ( fUseThisTscSeq && uTscSeq < UINT32_C(0xfffffffe)) u32TscSeq = uTscSeq + 1; pRefTsc->u32TscSequence = u32TscSeq; pRefTsc->u64TscScale = ((INT64_C(10000) << 32) / u64TscKHz) << 32; pRefTsc->i64TscOffset = 0; LogRel(("GIM: HyperV: Enabled TSC page at %#RGp - u64TscScale=%#RX64 u64TscKHz=%#RX64 (%'RU64) Seq=%#RU32\n", GCPhysTscPage, pRefTsc->u64TscScale, u64TscKHz, u64TscKHz, pRefTsc->u32TscSequence)); TMR3CpuTickParavirtEnable(pVM); return VINF_SUCCESS; } else LogRelFunc(("gimR3Mmio2Map failed. rc=%Rrc\n", rc)); return VERR_GIM_OPERATION_FAILED; #else AssertReturn(pRegion->cbRegion == PAGE_SIZE, VERR_GIM_IPE_2); PGIMHVREFTSC pRefTsc = (PGIMHVREFTSC)RTMemAllocZ(PAGE_SIZE); if (RT_UNLIKELY(!pRefTsc)) { LogRelFunc(("Failed to alloc %u bytes\n", PAGE_SIZE)); return VERR_NO_MEMORY; } PGIMHV pHv = &pVM->gim.s.u.Hv; uint64_t const u64TscKHz = pHv->cTscTicksPerSecond / UINT64_C(1000); uint32_t u32TscSeq = 1; if ( fUseThisTscSeq && uTscSeq < UINT32_C(0xfffffffe)) u32TscSeq = uTscSeq + 1; pRefTsc->u32TscSequence = u32TscSeq; pRefTsc->u64TscScale = ((INT64_C(10000) << 32) / u64TscKHz) << 32; pRefTsc->i64TscOffset = 0; rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysTscPage, pRefTsc, sizeof(*pRefTsc)); if (RT_SUCCESS(rc)) { LogRel(("GIM: HyperV: Enabled TSC page at %#RGp - u64TscScale=%#RX64 u64TscKHz=%#RX64 (%'RU64) Seq=%#RU32\n", GCPhysTscPage, pRefTsc->u64TscScale, u64TscKHz, u64TscKHz, pRefTsc->u32TscSequence)); pRegion->GCPhysPage = GCPhysTscPage; pRegion->fMapped = true; TMR3CpuTickParavirtEnable(pVM); } else { LogRelFunc(("GIM: HyperV: PGMPhysSimpleWriteGCPhys failed. rc=%Rrc\n", rc)); rc = VERR_GIM_OPERATION_FAILED; } RTMemFree(pRefTsc); return rc; #endif } /** * Enables the Hyper-V SIM page. * * @returns VBox status code. * @param pVCpu The cross context virtual CPU structure. * @param GCPhysSimPage Where to map the SIM page. */ VMMR3_INT_DECL(int) gimR3HvEnableSimPage(PVMCPU pVCpu, RTGCPHYS GCPhysSimPage) { PVM pVM = pVCpu->CTX_SUFF(pVM); PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3; AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED); /* * Map the SIMP page at the specified address. */ /** @todo this is buggy when large pages are used due to a PGM limitation, see * @bugref{7532}. Instead of the overlay style mapping, we just * rewrite guest memory directly. */ size_t const cbSimPage = PAGE_SIZE; void *pvSimPage = RTMemAllocZ(cbSimPage); if (RT_LIKELY(pvSimPage)) { int rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysSimPage, pvSimPage, cbSimPage); if (RT_SUCCESS(rc)) { /** @todo SIM setup. */ LogRel(("GIM%u: HyperV: Enabled SIM page at %#RGp\n", pVCpu->idCpu, GCPhysSimPage)); } else { LogRelFunc(("GIM%u: HyperV: PGMPhysSimpleWriteGCPhys failed. rc=%Rrc\n", pVCpu->idCpu, rc)); rc = VERR_GIM_OPERATION_FAILED; } RTMemFree(pvSimPage); return rc; } LogRelFunc(("GIM%u: HyperV: Failed to alloc %u bytes\n", pVCpu->idCpu, cbSimPage)); return VERR_NO_MEMORY; } /** * Disables the Hyper-V SIM page. * * @returns VBox status code. * @param pVCpu The cross context virtual CPU structure. */ VMMR3_INT_DECL(int) gimR3HvDisableSimPage(PVMCPU pVCpu) { LogRel(("GIM%u: HyperV: Disabled SIM page\n", pVCpu->idCpu)); /** @todo SIM teardown. */ return VINF_SUCCESS; } /** * Disables the Hyper-V TSC page. * * @returns VBox status code. * @param pVM The cross context VM structure. */ VMMR3_INT_DECL(int) gimR3HvDisableTscPage(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX]; if (pRegion->fMapped) { #if 0 gimR3Mmio2Unmap(pVM, pRegion); Assert(!pRegion->fMapped); #else pRegion->fMapped = false; #endif LogRel(("GIM: HyperV: Disabled TSC page\n")); TMR3CpuTickParavirtDisable(pVM); return VINF_SUCCESS; } return VERR_GIM_PVTSC_NOT_ENABLED; } /** * Disables the Hyper-V Hypercall page. * * @returns VBox status code. */ VMMR3_INT_DECL(int) gimR3HvDisableHypercallPage(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX]; if (pRegion->fMapped) { #if 0 gimR3Mmio2Unmap(pVM, pRegion); Assert(!pRegion->fMapped); #else pRegion->fMapped = false; #endif LogRel(("GIM: HyperV: Disabled Hypercall-page\n")); return VINF_SUCCESS; } return VERR_GIM_HYPERCALLS_NOT_ENABLED; } /** * Enables the Hyper-V Hypercall page. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param GCPhysHypercallPage Where to map the hypercall page. */ VMMR3_INT_DECL(int) gimR3HvEnableHypercallPage(PVM pVM, RTGCPHYS GCPhysHypercallPage) { PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3; PGIMMMIO2REGION pRegion = &pVM->gim.s.u.Hv.aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX]; AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED); if (pRegion->fMapped) { /* * Is it already enabled at the given guest-address? */ if (pRegion->GCPhysPage == GCPhysHypercallPage) return VINF_SUCCESS; /* * If it's mapped at a different address, unmap the previous address. */ int rc2 = gimR3HvDisableHypercallPage(pVM); AssertRC(rc2); } /* * Map the hypercall-page at the specified address. */ Assert(!pRegion->fMapped); /** @todo this is buggy when large pages are used due to a PGM limitation, see * @bugref{7532}. Instead of the overlay style mapping, we just * rewrite guest memory directly. */ #if 0 int rc = gimR3Mmio2Map(pVM, pRegion, GCPhysHypercallPage); if (RT_SUCCESS(rc)) { Assert(pRegion->GCPhysPage == GCPhysHypercallPage); /* * Patch the hypercall-page. */ size_t cbWritten = 0; rc = VMMPatchHypercall(pVM, pRegion->pvPageR3, PAGE_SIZE, &cbWritten); if ( RT_SUCCESS(rc) && cbWritten < PAGE_SIZE) { uint8_t *pbLast = (uint8_t *)pRegion->pvPageR3 + cbWritten; *pbLast = 0xc3; /* RET */ /* * Notify VMM that hypercalls are now enabled for all VCPUs. */ for (VMCPUID i = 0; i < pVM->cCpus; i++) VMMHypercallsEnable(&pVM->aCpus[i]); LogRel(("GIM: HyperV: Enabled hypercall page at %#RGp\n", GCPhysHypercallPage)); return VINF_SUCCESS; } else { if (rc == VINF_SUCCESS) rc = VERR_GIM_OPERATION_FAILED; LogRel(("GIM: HyperV: VMMPatchHypercall failed. rc=%Rrc cbWritten=%u\n", rc, cbWritten)); } gimR3Mmio2Unmap(pVM, pRegion); } LogRel(("GIM: HyperV: gimR3Mmio2Map failed. rc=%Rrc\n", rc)); return rc; #else AssertReturn(pRegion->cbRegion == PAGE_SIZE, VERR_GIM_IPE_3); void *pvHypercallPage = RTMemAllocZ(PAGE_SIZE); if (RT_UNLIKELY(!pvHypercallPage)) { LogRelFunc(("Failed to alloc %u bytes\n", PAGE_SIZE)); return VERR_NO_MEMORY; } /* * Patch the hypercall-page. */ size_t cbHypercall = 0; int rc = GIMQueryHypercallOpcodeBytes(pVM, pvHypercallPage, PAGE_SIZE, &cbHypercall, NULL /*puDisOpcode*/); if ( RT_SUCCESS(rc) && cbHypercall < PAGE_SIZE) { uint8_t *pbLast = (uint8_t *)pvHypercallPage + cbHypercall; *pbLast = 0xc3; /* RET */ rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysHypercallPage, pvHypercallPage, PAGE_SIZE); if (RT_SUCCESS(rc)) { pRegion->GCPhysPage = GCPhysHypercallPage; pRegion->fMapped = true; LogRel(("GIM: HyperV: Enabled hypercall page at %#RGp\n", GCPhysHypercallPage)); } else LogRel(("GIM: HyperV: PGMPhysSimpleWriteGCPhys failed during hypercall page setup. rc=%Rrc\n", rc)); } else { if (rc == VINF_SUCCESS) rc = VERR_GIM_OPERATION_FAILED; LogRel(("GIM: HyperV: VMMPatchHypercall failed. rc=%Rrc cbHypercall=%u\n", rc, cbHypercall)); } RTMemFree(pvHypercallPage); return rc; #endif } /** * Initializes Hyper-V guest hypercall support. * * @returns VBox status code. * @param pVM The cross context VM structure. */ static int gimR3HvInitHypercallSupport(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; pHv->pbHypercallIn = (uint8_t *)RTMemAllocZ(GIM_HV_PAGE_SIZE); if (RT_LIKELY(pHv->pbHypercallIn)) { pHv->pbHypercallOut = (uint8_t *)RTMemAllocZ(GIM_HV_PAGE_SIZE); if (RT_LIKELY(pHv->pbHypercallOut)) return VINF_SUCCESS; RTMemFree(pHv->pbHypercallIn); } return VERR_NO_MEMORY; } /** * Terminates Hyper-V guest hypercall support. * * @param pVM The cross context VM structure. */ static void gimR3HvTermHypercallSupport(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; RTMemFree(pHv->pbHypercallIn); pHv->pbHypercallIn = NULL; RTMemFree(pHv->pbHypercallOut); pHv->pbHypercallOut = NULL; } /** * Initializes Hyper-V guest debug support. * * @returns VBox status code. * @param pVM The cross context VM structure. */ static int gimR3HvInitDebugSupport(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; if ( (pHv->uPartFlags & GIM_HV_PART_FLAGS_DEBUGGING) || pHv->fIsInterfaceVs) { pHv->fDbgEnabled = true; pHv->pvDbgBuffer = RTMemAllocZ(PAGE_SIZE); if (!pHv->pvDbgBuffer) return VERR_NO_MEMORY; } return VINF_SUCCESS; } /** * Terminates Hyper-V guest debug support. * * @param pVM The cross context VM structure. */ static void gimR3HvTermDebugSupport(PVM pVM) { PGIMHV pHv = &pVM->gim.s.u.Hv; if (pHv->pvDbgBuffer) { RTMemFree(pHv->pvDbgBuffer); pHv->pvDbgBuffer = NULL; } } /** * Reads data from a debugger connection, asynchronous. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pvBuf Where to read the data. * @param cbBuf Size of the read buffer @a pvBuf, must be >= @a cbRead. * @param cbRead Number of bytes to read. * @param pcbRead Where to store how many bytes were really read. * @param cMsTimeout Timeout of the read operation in milliseconds. * @param fUdpPkt Whether the debug data returned in @a pvBuf needs to be * encapsulated in a UDP frame. * * @thread EMT. */ VMMR3_INT_DECL(int) gimR3HvDebugRead(PVM pVM, void *pvBuf, uint32_t cbBuf, uint32_t cbRead, uint32_t *pcbRead, uint32_t cMsTimeout, bool fUdpPkt) { NOREF(cMsTimeout); /** @todo implement timeout. */ AssertCompile(sizeof(size_t) >= sizeof(uint32_t)); AssertReturn(cbBuf >= cbRead, VERR_INVALID_PARAMETER); int rc; if (!fUdpPkt) { /* * Read the raw debug data. */ size_t cbReallyRead = cbRead; rc = gimR3DebugRead(pVM, pvBuf, &cbReallyRead, gimR3HvDebugBufReadCompleted); *pcbRead = (uint32_t)cbReallyRead; } else { /* * Guest requires UDP encapsulated frames. */ PGIMHV pHv = &pVM->gim.s.u.Hv; rc = VERR_GIM_IPE_1; switch (pHv->enmDbgReply) { case GIMHVDEBUGREPLY_UDP: { size_t cbReallyRead = cbRead; rc = gimR3DebugRead(pVM, pvBuf, &cbReallyRead, gimR3HvDebugBufReadCompleted); if ( RT_SUCCESS(rc) && cbReallyRead > 0) { uint8_t abFrame[sizeof(RTNETETHERHDR) + RTNETIPV4_MIN_LEN + sizeof(RTNETUDP)]; if (cbReallyRead + sizeof(abFrame) <= cbBuf) { /* * Windows guests pumps ethernet frames over the Hyper-V debug connection as * explained in gimR3HvHypercallPostDebugData(). Here, we reconstruct the packet * with the guest's self-chosen IP ARP address we saved in pHv->DbgGuestAddr. * * Note! We really need to pass the minimum IPv4 header length. The Windows 10 guest * is -not- happy if we include the IPv4 options field, i.e. using sizeof(RTNETIPV4) * instead of RTNETIPV4_MIN_LEN. */ RT_ZERO(abFrame); PRTNETETHERHDR pEthHdr = (PRTNETETHERHDR)&abFrame[0]; PRTNETIPV4 pIpHdr = (PRTNETIPV4) (pEthHdr + 1); PRTNETUDP pUdpHdr = (PRTNETUDP) ((uint8_t *)pIpHdr + RTNETIPV4_MIN_LEN); /* Ethernet */ pEthHdr->EtherType = RT_H2N_U16_C(RTNET_ETHERTYPE_IPV4); /* IPv4 */ pIpHdr->ip_v = 4; pIpHdr->ip_hl = RTNETIPV4_MIN_LEN / sizeof(uint32_t); pIpHdr->ip_tos = 0; pIpHdr->ip_len = RT_H2N_U16((uint16_t)cbReallyRead + sizeof(RTNETUDP) + RTNETIPV4_MIN_LEN); pIpHdr->ip_id = 0; pIpHdr->ip_off = 0; pIpHdr->ip_ttl = 255; pIpHdr->ip_p = RTNETIPV4_PROT_UDP; pIpHdr->ip_sum = 0; pIpHdr->ip_src.u = 0; pIpHdr->ip_dst.u = pHv->DbgGuestIp4Addr.u; pIpHdr->ip_sum = RTNetIPv4HdrChecksum(pIpHdr); /* UDP */ pUdpHdr->uh_dport = pHv->uUdpGuestSrcPort; pUdpHdr->uh_sport = pHv->uUdpGuestDstPort; pUdpHdr->uh_ulen = RT_H2N_U16_C((uint16_t)cbReallyRead + sizeof(*pUdpHdr)); /* Make room by moving the payload and prepending the headers. */ uint8_t *pbData = (uint8_t *)pvBuf; memmove(pbData + sizeof(abFrame), pbData, cbReallyRead); memcpy(pbData, &abFrame[0], sizeof(abFrame)); /* Update the adjusted sizes. */ cbReallyRead += sizeof(abFrame); } else rc = VERR_BUFFER_UNDERFLOW; } *pcbRead = (uint32_t)cbReallyRead; break; } case GIMHVDEBUGREPLY_ARP_REPLY: { uint32_t const cbArpReplyPkt = sizeof(g_abArpReply); if (cbBuf >= cbArpReplyPkt) { memcpy(pvBuf, g_abArpReply, cbArpReplyPkt); rc = VINF_SUCCESS; *pcbRead = cbArpReplyPkt; pHv->enmDbgReply = GIMHVDEBUGREPLY_ARP_REPLY_SENT; } else { rc = VERR_BUFFER_UNDERFLOW; *pcbRead = 0; } break; } case GIMHVDEBUGREPLY_DHCP_OFFER: { uint32_t const cbDhcpOfferPkt = sizeof(g_abDhcpOffer); if (cbBuf >= cbDhcpOfferPkt) { memcpy(pvBuf, g_abDhcpOffer, cbDhcpOfferPkt); PRTNETETHERHDR pEthHdr = (PRTNETETHERHDR)pvBuf; PRTNETIPV4 pIpHdr = (PRTNETIPV4) (pEthHdr + 1); PRTNETUDP pUdpHdr = (PRTNETUDP) ((uint8_t *)pIpHdr + RTNETIPV4_MIN_LEN); PRTNETBOOTP pBootpHdr = (PRTNETBOOTP) (pUdpHdr + 1); pBootpHdr->bp_xid = pHv->uDbgBootpXId; rc = VINF_SUCCESS; *pcbRead = cbDhcpOfferPkt; pHv->enmDbgReply = GIMHVDEBUGREPLY_DHCP_OFFER_SENT; LogRel(("GIM: HyperV: Debug DHCP offered IP address %RTnaipv4, transaction Id %#x\n", pBootpHdr->bp_yiaddr, RT_N2H_U32(pHv->uDbgBootpXId))); } else { rc = VERR_BUFFER_UNDERFLOW; *pcbRead = 0; } break; } case GIMHVDEBUGREPLY_DHCP_ACK: { uint32_t const cbDhcpAckPkt = sizeof(g_abDhcpAck); if (cbBuf >= cbDhcpAckPkt) { memcpy(pvBuf, g_abDhcpAck, cbDhcpAckPkt); PRTNETETHERHDR pEthHdr = (PRTNETETHERHDR)pvBuf; PRTNETIPV4 pIpHdr = (PRTNETIPV4) (pEthHdr + 1); PRTNETUDP pUdpHdr = (PRTNETUDP) ((uint8_t *)pIpHdr + RTNETIPV4_MIN_LEN); PRTNETBOOTP pBootpHdr = (PRTNETBOOTP) (pUdpHdr + 1); pBootpHdr->bp_xid = pHv->uDbgBootpXId; rc = VINF_SUCCESS; *pcbRead = cbDhcpAckPkt; pHv->enmDbgReply = GIMHVDEBUGREPLY_DHCP_ACK_SENT; LogRel(("GIM: HyperV: Debug DHCP acknowledged IP address %RTnaipv4, transaction Id %#x\n", pBootpHdr->bp_yiaddr, RT_N2H_U32(pHv->uDbgBootpXId))); } else { rc = VERR_BUFFER_UNDERFLOW; *pcbRead = 0; } break; } case GIMHVDEBUGREPLY_ARP_REPLY_SENT: case GIMHVDEBUGREPLY_DHCP_OFFER_SENT: case GIMHVDEBUGREPLY_DHCP_ACK_SENT: { rc = VINF_SUCCESS; *pcbRead = 0; break; } default: { AssertMsgFailed(("GIM: HyperV: Invalid/unimplemented debug reply type %u\n", pHv->enmDbgReply)); rc = VERR_INTERNAL_ERROR_2; } } Assert(rc != VERR_GIM_IPE_1); #ifdef DEBUG_ramshankar if ( rc == VINF_SUCCESS && *pcbRead > 0) { RTSOCKET hSocket; int rc2 = RTUdpCreateClientSocket("localhost", 52000, NULL, &hSocket); if (RT_SUCCESS(rc2)) { size_t cbTmpWrite = *pcbRead; RTSocketWriteNB(hSocket, pvBuf, *pcbRead, &cbTmpWrite); NOREF(cbTmpWrite); RTSocketClose(hSocket); } } #endif } return rc; } /** * Writes data to the debugger connection, asynchronous. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param pvData Pointer to the data to be written. * @param cbWrite Size of the write buffer @a pvData. * @param pcbWritten Where to store the number of bytes written. * @param fUdpPkt Whether the debug data in @a pvData is encapsulated in a * UDP frame. * * @thread EMT. */ VMMR3_INT_DECL(int) gimR3HvDebugWrite(PVM pVM, void *pvData, uint32_t cbWrite, uint32_t *pcbWritten, bool fUdpPkt) { Assert(cbWrite > 0); PGIMHV pHv = &pVM->gim.s.u.Hv; bool fIgnorePkt = false; uint8_t *pbData = (uint8_t *)pvData; if (fUdpPkt) { #ifdef DEBUG_ramshankar RTSOCKET hSocket; int rc2 = RTUdpCreateClientSocket("localhost", 52000, NULL, &hSocket); if (RT_SUCCESS(rc2)) { size_t cbTmpWrite = cbWrite; RTSocketWriteNB(hSocket, pbData, cbWrite, &cbTmpWrite); NOREF(cbTmpWrite); RTSocketClose(hSocket); } #endif /* * Windows guests sends us ethernet frames over the Hyper-V debug connection. * It sends DHCP/ARP queries with zero'd out MAC addresses and requires fudging up the * packets somewhere. * * The Microsoft WinDbg debugger talks UDP and thus only expects the actual debug * protocol payload. * * If the guest is configured with the "nodhcp" option it sends ARP queries with * a self-chosen IP and after a couple of attempts of receiving no replies, the guest * picks its own IP address. After this, the guest starts sending the UDP packets * we require. We thus ignore the initial ARP packets until the guest eventually * starts talking UDP. Then we can finally feed the UDP payload over the debug * connection. * * When 'kdvm.dll' is the debug transport in the guest (Windows 7), it doesn't bother * with this DHCP/ARP phase. It starts sending debug data in a UDP frame right away. */ if (cbWrite > sizeof(RTNETETHERHDR)) { PCRTNETETHERHDR pEtherHdr = (PCRTNETETHERHDR)pbData; if (pEtherHdr->EtherType == RT_H2N_U16_C(RTNET_ETHERTYPE_IPV4)) { if (cbWrite > sizeof(RTNETETHERHDR) + RTNETIPV4_MIN_LEN + RTNETUDP_MIN_LEN) { size_t const cbMaxIpHdr = cbWrite - sizeof(RTNETETHERHDR) - sizeof(RTNETUDP) - 1; size_t const cbMaxIpPkt = cbWrite - sizeof(RTNETETHERHDR); PCRTNETIPV4 pIp4Hdr = (PCRTNETIPV4)(pbData + sizeof(RTNETETHERHDR)); bool const fValidIp4 = RTNetIPv4IsHdrValid(pIp4Hdr, cbMaxIpHdr, cbMaxIpPkt, false /*fChecksum*/); if ( fValidIp4 && pIp4Hdr->ip_p == RTNETIPV4_PROT_UDP) { uint32_t const cbIpHdr = pIp4Hdr->ip_hl * 4; uint32_t const cbMaxUdpPkt = cbWrite - sizeof(RTNETETHERHDR) - cbIpHdr; PCRTNETUDP pUdpHdr = (PCRTNETUDP)((uint8_t *)pIp4Hdr + cbIpHdr); if ( pUdpHdr->uh_ulen > RT_H2N_U16(sizeof(RTNETUDP)) && pUdpHdr->uh_ulen <= RT_H2N_U16((uint16_t)cbMaxUdpPkt)) { /* * Check for DHCP. */ bool fBuggyPkt = false; size_t const cbUdpPkt = cbMaxIpPkt - cbIpHdr; if ( pUdpHdr->uh_dport == RT_N2H_U16_C(RTNETIPV4_PORT_BOOTPS) && pUdpHdr->uh_sport == RT_N2H_U16_C(RTNETIPV4_PORT_BOOTPC)) { PCRTNETBOOTP pDhcpPkt = (PCRTNETBOOTP)(pUdpHdr + 1); uint8_t bMsgType; if ( cbMaxIpPkt >= cbIpHdr + RTNETUDP_MIN_LEN + RTNETBOOTP_DHCP_MIN_LEN && RTNetIPv4IsDHCPValid(pUdpHdr, pDhcpPkt, cbUdpPkt - sizeof(*pUdpHdr), &bMsgType)) { switch (bMsgType) { case RTNET_DHCP_MT_DISCOVER: pHv->enmDbgReply = GIMHVDEBUGREPLY_DHCP_OFFER; pHv->uDbgBootpXId = pDhcpPkt->bp_xid; break; case RTNET_DHCP_MT_REQUEST: pHv->enmDbgReply = GIMHVDEBUGREPLY_DHCP_ACK; pHv->uDbgBootpXId = pDhcpPkt->bp_xid; break; default: LogRelMax(5, ("GIM: HyperV: Debug DHCP MsgType %#x not implemented! Packet dropped\n", bMsgType)); break; } fIgnorePkt = true; } else if ( pIp4Hdr->ip_src.u == GIMHV_DEBUGCLIENT_IPV4 && pIp4Hdr->ip_dst.u == 0) { /* * Windows 8.1 seems to be sending malformed BOOTP packets at the final stage of the * debugger sequence. It appears that a previously sent DHCP request buffer wasn't cleared * in the guest and they re-use it instead of sending a zero destination+source port packet * as expected below. * * We workaround Microsoft's bug here, or at least, I'm classifying it as a bug to * preserve my own sanity, see @bugref{8006#c54}. */ fBuggyPkt = true; } } if ( ( !pUdpHdr->uh_dport && !pUdpHdr->uh_sport) || fBuggyPkt) { /* * Extract the UDP payload and pass it to the debugger and record the guest IP address. * * Hyper-V sends UDP debugger packets with source and destination port as 0 except in the * aforementioned buggy case. The buggy packet case requires us to remember the ports and * reply to them, otherwise the guest won't receive the replies we sent with port 0. */ uint32_t const cbFrameHdr = sizeof(RTNETETHERHDR) + cbIpHdr + sizeof(RTNETUDP); pbData += cbFrameHdr; cbWrite -= cbFrameHdr; pHv->DbgGuestIp4Addr.u = pIp4Hdr->ip_src.u; pHv->uUdpGuestDstPort = pUdpHdr->uh_dport; pHv->uUdpGuestSrcPort = pUdpHdr->uh_sport; pHv->enmDbgReply = GIMHVDEBUGREPLY_UDP; } else { LogFlow(("GIM: HyperV: Ignoring UDP packet SourcePort=%u DstPort=%u\n", pUdpHdr->uh_sport, pUdpHdr->uh_dport)); fIgnorePkt = true; } } else { LogFlow(("GIM: HyperV: Ignoring malformed UDP packet. cbMaxUdpPkt=%u UdpPkt.len=%u\n", cbMaxUdpPkt, RT_N2H_U16(pUdpHdr->uh_ulen))); fIgnorePkt = true; } } else { LogFlow(("GIM: HyperV: Ignoring non-IP / non-UDP packet. fValidIp4=%RTbool Proto=%u\n", fValidIp4, pIp4Hdr->ip_p)); fIgnorePkt = true; } } else { LogFlow(("GIM: HyperV: Ignoring IPv4 packet; too short to be valid UDP. cbWrite=%u\n", cbWrite)); fIgnorePkt = true; } } else if (pEtherHdr->EtherType == RT_H2N_U16_C(RTNET_ETHERTYPE_ARP)) { /* * Check for targetted ARP query. */ PCRTNETARPHDR pArpHdr = (PCRTNETARPHDR)(pbData + sizeof(RTNETETHERHDR)); if ( pArpHdr->ar_hlen == sizeof(RTMAC) && pArpHdr->ar_plen == sizeof(RTNETADDRIPV4) && pArpHdr->ar_htype == RT_H2N_U16(RTNET_ARP_ETHER) && pArpHdr->ar_ptype == RT_H2N_U16(RTNET_ETHERTYPE_IPV4)) { uint16_t uArpOp = pArpHdr->ar_oper; if (uArpOp == RT_H2N_U16_C(RTNET_ARPOP_REQUEST)) { PCRTNETARPIPV4 pArpPkt = (PCRTNETARPIPV4)pArpHdr; bool fGratuitous = pArpPkt->ar_spa.u == pArpPkt->ar_tpa.u; if ( !fGratuitous && pArpPkt->ar_spa.u == GIMHV_DEBUGCLIENT_IPV4 && pArpPkt->ar_tpa.u == GIMHV_DEBUGSERVER_IPV4) { pHv->enmDbgReply = GIMHVDEBUGREPLY_ARP_REPLY; } } } fIgnorePkt = true; } else { LogFlow(("GIM: HyperV: Ignoring non-IP packet. Ethertype=%#x\n", RT_N2H_U16(pEtherHdr->EtherType))); fIgnorePkt = true; } } } if (!fIgnorePkt) { AssertCompile(sizeof(size_t) >= sizeof(uint32_t)); size_t cbWriteBuf = cbWrite; int rc = gimR3DebugWrite(pVM, pbData, &cbWriteBuf); if ( RT_SUCCESS(rc) && cbWriteBuf == cbWrite) *pcbWritten = (uint32_t)cbWriteBuf; else *pcbWritten = 0; } else *pcbWritten = cbWrite; return VINF_SUCCESS; } /** * Performs the HvPostDebugData hypercall. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param prcHv Where to store the result of the hypercall operation. * * @thread EMT. */ VMMR3_INT_DECL(int) gimR3HvHypercallPostDebugData(PVM pVM, int *prcHv) { AssertPtr(pVM); AssertPtr(prcHv); PGIMHV pHv = &pVM->gim.s.u.Hv; int rcHv = GIM_HV_STATUS_OPERATION_DENIED; /* * Grab the parameters. */ PGIMHVDEBUGPOSTIN pIn = (PGIMHVDEBUGPOSTIN)pHv->pbHypercallIn; AssertPtrReturn(pIn, VERR_GIM_IPE_1); uint32_t cbWrite = pIn->cbWrite; uint32_t fFlags = pIn->fFlags; uint8_t *pbData = ((uint8_t *)pIn) + sizeof(PGIMHVDEBUGPOSTIN); PGIMHVDEBUGPOSTOUT pOut = (PGIMHVDEBUGPOSTOUT)pHv->pbHypercallOut; /* * Perform the hypercall. */ #if 0 /* Currently disabled as Windows 10 guest passes us undocumented flags. */ if (fFlags & ~GIM_HV_DEBUG_POST_OPTIONS_MASK)) rcHv = GIM_HV_STATUS_INVALID_PARAMETER; #else RT_NOREF1(fFlags); #endif if (cbWrite > GIM_HV_DEBUG_MAX_DATA_SIZE) rcHv = GIM_HV_STATUS_INVALID_PARAMETER; else if (!cbWrite) { rcHv = GIM_HV_STATUS_SUCCESS; pOut->cbPending = 0; } else if (cbWrite > 0) { uint32_t cbWritten = 0; int rc2 = gimR3HvDebugWrite(pVM, pbData, cbWrite, &cbWritten, pHv->fIsVendorMsHv /*fUdpPkt*/); if ( RT_SUCCESS(rc2) && cbWritten == cbWrite) { pOut->cbPending = 0; rcHv = GIM_HV_STATUS_SUCCESS; } else rcHv = GIM_HV_STATUS_INSUFFICIENT_BUFFER; } /* * Update the guest memory with result. */ int rc = PGMPhysSimpleWriteGCPhys(pVM, pHv->GCPhysHypercallOut, pHv->pbHypercallOut, sizeof(GIMHVDEBUGPOSTOUT)); if (RT_FAILURE(rc)) { LogRelMax(10, ("GIM: HyperV: HvPostDebugData failed to update guest memory. rc=%Rrc\n", rc)); rc = VERR_GIM_HYPERCALL_MEMORY_WRITE_FAILED; } else Assert(rc == VINF_SUCCESS); *prcHv = rcHv; return rc; } /** * Performs the HvRetrieveDebugData hypercall. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param prcHv Where to store the result of the hypercall operation. * * @thread EMT. */ VMMR3_INT_DECL(int) gimR3HvHypercallRetrieveDebugData(PVM pVM, int *prcHv) { AssertPtr(pVM); AssertPtr(prcHv); PGIMHV pHv = &pVM->gim.s.u.Hv; int rcHv = GIM_HV_STATUS_OPERATION_DENIED; /* * Grab the parameters. */ PGIMHVDEBUGRETRIEVEIN pIn = (PGIMHVDEBUGRETRIEVEIN)pHv->pbHypercallIn; AssertPtrReturn(pIn, VERR_GIM_IPE_1); uint32_t cbRead = pIn->cbRead; uint32_t fFlags = pIn->fFlags; uint64_t uTimeout = pIn->u64Timeout; uint32_t cMsTimeout = (fFlags & GIM_HV_DEBUG_RETREIVE_LOOP) ? (uTimeout * 100) / RT_NS_1MS_64 : 0; PGIMHVDEBUGRETRIEVEOUT pOut = (PGIMHVDEBUGRETRIEVEOUT)pHv->pbHypercallOut; AssertPtrReturn(pOut, VERR_GIM_IPE_2); uint32_t *pcbReallyRead = &pOut->cbRead; uint32_t *pcbRemainingRead = &pOut->cbRemaining; void *pvData = ((uint8_t *)pOut) + sizeof(GIMHVDEBUGRETRIEVEOUT); /* * Perform the hypercall. */ *pcbReallyRead = 0; *pcbRemainingRead = cbRead; #if 0 /* Currently disabled as Windows 10 guest passes us undocumented flags. */ if (fFlags & ~GIM_HV_DEBUG_RETREIVE_OPTIONS_MASK) rcHv = GIM_HV_STATUS_INVALID_PARAMETER; #endif if (cbRead > GIM_HV_DEBUG_MAX_DATA_SIZE) rcHv = GIM_HV_STATUS_INVALID_PARAMETER; else if (fFlags & GIM_HV_DEBUG_RETREIVE_TEST_ACTIVITY) rcHv = GIM_HV_STATUS_SUCCESS; /** @todo implement this. */ else if (!cbRead) rcHv = GIM_HV_STATUS_SUCCESS; else if (cbRead > 0) { int rc2 = gimR3HvDebugRead(pVM, pvData, GIM_HV_PAGE_SIZE, cbRead, pcbReallyRead, cMsTimeout, pHv->fIsVendorMsHv /*fUdpPkt*/); Assert(*pcbReallyRead <= cbRead); if ( RT_SUCCESS(rc2) && *pcbReallyRead > 0) { *pcbRemainingRead = cbRead - *pcbReallyRead; rcHv = GIM_HV_STATUS_SUCCESS; } else rcHv = GIM_HV_STATUS_NO_DATA; } /* * Update the guest memory with result. */ int rc = PGMPhysSimpleWriteGCPhys(pVM, pHv->GCPhysHypercallOut, pHv->pbHypercallOut, sizeof(GIMHVDEBUGRETRIEVEOUT) + *pcbReallyRead); if (RT_FAILURE(rc)) { LogRelMax(10, ("GIM: HyperV: HvRetrieveDebugData failed to update guest memory. rc=%Rrc\n", rc)); rc = VERR_GIM_HYPERCALL_MEMORY_WRITE_FAILED; } else Assert(rc == VINF_SUCCESS); *prcHv = rcHv; return rc; } /** * Performs the HvExtCallQueryCapabilities extended hypercall. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param prcHv Where to store the result of the hypercall operation. * * @thread EMT. */ VMMR3_INT_DECL(int) gimR3HvHypercallExtQueryCap(PVM pVM, int *prcHv) { AssertPtr(pVM); AssertPtr(prcHv); PGIMHV pHv = &pVM->gim.s.u.Hv; /* * Grab the parameters. */ PGIMHVEXTQUERYCAP pOut = (PGIMHVEXTQUERYCAP)pHv->pbHypercallOut; /* * Perform the hypercall. */ pOut->fCapabilities = GIM_HV_EXT_HYPERCALL_CAP_ZERO_MEM; /* * Update the guest memory with result. */ int rcHv; int rc = PGMPhysSimpleWriteGCPhys(pVM, pHv->GCPhysHypercallOut, pHv->pbHypercallOut, sizeof(GIMHVEXTQUERYCAP)); if (RT_SUCCESS(rc)) { rcHv = GIM_HV_STATUS_SUCCESS; LogRel(("GIM: HyperV: Queried extended hypercall capabilities %#RX64 at %#RGp\n", pOut->fCapabilities, pHv->GCPhysHypercallOut)); } else { rcHv = GIM_HV_STATUS_OPERATION_DENIED; LogRelMax(10, ("GIM: HyperV: HvHypercallExtQueryCap failed to update guest memory. rc=%Rrc\n", rc)); rc = VERR_GIM_HYPERCALL_MEMORY_WRITE_FAILED; } *prcHv = rcHv; return rc; } /** * Performs the HvExtCallGetBootZeroedMemory extended hypercall. * * @returns VBox status code. * @param pVM The cross context VM structure. * @param prcHv Where to store the result of the hypercall operation. * * @thread EMT. */ VMMR3_INT_DECL(int) gimR3HvHypercallExtGetBootZeroedMem(PVM pVM, int *prcHv) { AssertPtr(pVM); AssertPtr(prcHv); PGIMHV pHv = &pVM->gim.s.u.Hv; /* * Grab the parameters. */ PGIMHVEXTGETBOOTZEROMEM pOut = (PGIMHVEXTGETBOOTZEROMEM)pHv->pbHypercallOut; /* * Perform the hypercall. */ uint32_t const cRanges = PGMR3PhysGetRamRangeCount(pVM); pOut->cPages = 0; for (uint32_t iRange = 0; iRange < cRanges; iRange++) { RTGCPHYS GCPhysStart; RTGCPHYS GCPhysEnd; int rc = PGMR3PhysGetRange(pVM, iRange, &GCPhysStart, &GCPhysEnd, NULL /* pszDesc */, NULL /* fIsMmio */); if (RT_FAILURE(rc)) { LogRelMax(10, ("GIM: HyperV: HvHypercallExtGetBootZeroedMem: PGMR3PhysGetRange failed for iRange(%u) rc=%Rrc\n", iRange, rc)); *prcHv = GIM_HV_STATUS_OPERATION_DENIED; return rc; } RTGCPHYS const cbRange = RT_ALIGN(GCPhysEnd - GCPhysStart + 1, PAGE_SIZE); pOut->cPages += cbRange >> GIM_HV_PAGE_SHIFT; if (iRange == 0) pOut->GCPhysStart = GCPhysStart; } /* * Update the guest memory with result. */ int rcHv; int rc = PGMPhysSimpleWriteGCPhys(pVM, pHv->GCPhysHypercallOut, pHv->pbHypercallOut, sizeof(GIMHVEXTGETBOOTZEROMEM)); if (RT_SUCCESS(rc)) { LogRel(("GIM: HyperV: Queried boot zeroed guest memory range (starting at %#RGp spanning %u pages) at %#RGp\n", pOut->GCPhysStart, pOut->cPages, pHv->GCPhysHypercallOut)); rcHv = GIM_HV_STATUS_SUCCESS; } else { rcHv = GIM_HV_STATUS_OPERATION_DENIED; LogRelMax(10, ("GIM: HyperV: HvHypercallExtGetBootZeroedMem failed to update guest memory. rc=%Rrc\n", rc)); rc = VERR_GIM_HYPERCALL_MEMORY_WRITE_FAILED; } *prcHv = rcHv; return rc; }