GIMAllHv.cpp revision 46fa8016c74a7f3a46a16278103fda26c749e6f1
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * GIM - Guest Interface Manager, Microsoft Hyper-V, All Contexts.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * Copyright (C) 2014 Oracle Corporation
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * available from http://www.virtualbox.org. This file is free software;
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * you can redistribute it and/or modify it under the terms of the GNU
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * General Public License (GPL) as published by the Free Software
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync/*******************************************************************************
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync* Header Files *
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync*******************************************************************************/
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * Handles the Hyper-V hypercall.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @returns VBox status code.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pVCpu Pointer to the VMCPU.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pCtx Pointer to the guest-CPU context.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsyncVMM_INT_DECL(int) GIMHvHypercall(PVMCPU pVCpu, PCPUMCTX pCtx)
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync if (!MSR_GIM_HV_HYPERCALL_IS_ENABLED(pVM->gim.s.u.Hv.u64HypercallMsr))
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync /** @todo Handle hypercalls. Fail for now */
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * Returns whether the guest has configured and enabled the use of Hyper-V's
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * hypercall interface.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @returns true if hypercalls are enabled, false otherwise.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pVCpu Pointer to the VMCPU.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsyncVMM_INT_DECL(bool) GIMHvAreHypercallsEnabled(PVMCPU pVCpu)
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync return MSR_GIM_HV_HYPERCALL_IS_ENABLED(pVCpu->CTX_SUFF(pVM)->gim.s.u.Hv.u64HypercallMsr);
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * Returns whether the guest has configured and enabled the use of Hyper-V's
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * paravirtualized TSC.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @returns true if paravirt. TSC is enabled, false otherwise.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pVM Pointer to the VM.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsyncVMM_INT_DECL(bool) GIMHvIsParavirtTscEnabled(PVM pVM)
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync return MSR_GIM_HV_REF_TSC_IS_ENABLED(pVM->gim.s.u.Hv.u64TscPageMsr);
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * MSR read handler for Hyper-V.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @returns Strict VBox status code like CPUMQueryGuestMsr.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @retval VINF_CPUM_R3_MSR_READ
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @retval VERR_CPUM_RAISE_GP_0
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pVCpu Pointer to the VMCPU.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param idMsr The MSR being read.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pRange The range this MSR belongs to.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param puValue Where to store the MSR value read.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsyncVMM_INT_DECL(VBOXSTRICTRC) GIMHvReadMsr(PVMCPU pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t *puValue)
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync /* Hyper-V reports the time in 100 ns units (10 MHz). */
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync uint64_t u64Tsc100Ns = u64TscHz / UINT64_C(10000000); /* 100 ns */
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync LogRel(("GIM: HyperV: Unknown/invalid RdMsr (%#x) -> #GP(0)\n", idMsr));
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync LogFunc(("Unknown/invalid RdMsr (%#RX32) -> #GP(0)\n", idMsr));
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * MSR write handler for Hyper-V.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @returns Strict VBox status code like CPUMSetGuestMsr.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @retval VINF_CPUM_R3_MSR_WRITE
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @retval VERR_CPUM_RAISE_GP_0
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pVCpu Pointer to the VMCPU.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param idMsr The MSR being written.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param pRange The range this MSR belongs to.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync * @param uRawValue The raw value with the ignored bits not masked.
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsyncVMM_INT_DECL(VBOXSTRICTRC) GIMHvWriteMsr(PVMCPU pVCpu, uint32_t idMsr, PCCPUMMSRRANGE pRange, uint64_t uRawValue)
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync PDMApicWriteMSR(pVM, pVCpu->idCpu, 0x80, uRawValue);
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync PDMApicWriteMSR(pVM, pVCpu->idCpu, 0x0B, uRawValue);
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync PDMApicWriteMSR(pVM, pVCpu->idCpu, 0x30, uRawValue);
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync /* Disable the hypercall-page if 0 is written to this MSR. */
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync pHv->u64HypercallMsr &= ~MSR_GIM_HV_HYPERCALL_ENABLE_BIT;
e6725710856db1d20c16eb103a0d3ea8f46a982avboxsync#endif /* IN_RING3 */
return VINF_CPUM_R3_MSR_WRITE;
return VINF_SUCCESS;
if ( fEnable
return VINF_SUCCESS;
if (!fEnable)
return VINF_SUCCESS;
return VINF_SUCCESS;
return VERR_CPUM_RAISE_GP_0;
case MSR_GIM_HV_REF_TSC:
#ifndef IN_RING3
return VINF_CPUM_R3_MSR_WRITE;
if (!fEnable)
return VINF_SUCCESS;
int rc = GIMR3HvEnableTscPage(pVM, GCPhysTscPage, false /* fUseThisTscSequence */, 0 /* uTscSequence */);
return VINF_SUCCESS;
return VERR_CPUM_RAISE_GP_0;
case MSR_GIM_HV_RESET:
#ifndef IN_RING3
return VINF_CPUM_R3_MSR_WRITE;
return VINF_SUCCESS;
case MSR_GIM_HV_VP_INDEX:
case MSR_GIM_HV_TSC_FREQ:
case MSR_GIM_HV_APIC_FREQ:
return VERR_CPUM_RAISE_GP_0;
#ifdef IN_RING3
LogRel(("GIM: HyperV: Unknown/invalid WrMsr (%#x,%#x`%08x) -> #GP(0)\n", idMsr, uRawValue & UINT64_C(0xffffffff00000000),
return VERR_CPUM_RAISE_GP_0;