| 1 | /* $Id: GIMR0.cpp 86121 2020-09-14 16:56:09Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * Guest Interface Manager (GIM) - Host Context Ring-0.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2014-2020 Oracle Corporation
|
|---|
| 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 |
|
|---|
| 18 |
|
|---|
| 19 | /*********************************************************************************************************************************
|
|---|
| 20 | * Header Files *
|
|---|
| 21 | *********************************************************************************************************************************/
|
|---|
| 22 | #define LOG_GROUP LOG_GROUP_GIM
|
|---|
| 23 | #include <VBox/vmm/gim.h>
|
|---|
| 24 | #include "GIMInternal.h"
|
|---|
| 25 | #include "GIMHvInternal.h"
|
|---|
| 26 | #include <VBox/vmm/vmcc.h>
|
|---|
| 27 |
|
|---|
| 28 | #include <VBox/err.h>
|
|---|
| 29 |
|
|---|
| 30 |
|
|---|
| 31 | /**
|
|---|
| 32 | * Does ring-0 per-VM GIM initialization.
|
|---|
| 33 | *
|
|---|
| 34 | * @returns VBox status code.
|
|---|
| 35 | * @param pVM The cross context VM structure.
|
|---|
| 36 | */
|
|---|
| 37 | VMMR0_INT_DECL(int) GIMR0InitVM(PVMCC pVM)
|
|---|
| 38 | {
|
|---|
| 39 | if (!GIMIsEnabled(pVM))
|
|---|
| 40 | return VINF_SUCCESS;
|
|---|
| 41 |
|
|---|
| 42 | switch (pVM->gim.s.enmProviderId)
|
|---|
| 43 | {
|
|---|
| 44 | case GIMPROVIDERID_HYPERV:
|
|---|
| 45 | return gimR0HvInitVM(pVM);
|
|---|
| 46 |
|
|---|
| 47 | default:
|
|---|
| 48 | break;
|
|---|
| 49 | }
|
|---|
| 50 | return VINF_SUCCESS;
|
|---|
| 51 | }
|
|---|
| 52 |
|
|---|
| 53 |
|
|---|
| 54 | /**
|
|---|
| 55 | * Does ring-0 per-VM GIM termination.
|
|---|
| 56 | *
|
|---|
| 57 | * @returns VBox status code.
|
|---|
| 58 | * @param pVM The cross context VM structure.
|
|---|
| 59 | */
|
|---|
| 60 | VMMR0_INT_DECL(int) GIMR0TermVM(PVMCC pVM)
|
|---|
| 61 | {
|
|---|
| 62 | if (!GIMIsEnabled(pVM))
|
|---|
| 63 | return VINF_SUCCESS;
|
|---|
| 64 |
|
|---|
| 65 | switch (pVM->gim.s.enmProviderId)
|
|---|
| 66 | {
|
|---|
| 67 | case GIMPROVIDERID_HYPERV:
|
|---|
| 68 | return gimR0HvTermVM(pVM);
|
|---|
| 69 |
|
|---|
| 70 | default:
|
|---|
| 71 | break;
|
|---|
| 72 | }
|
|---|
| 73 | return VINF_SUCCESS;
|
|---|
| 74 | }
|
|---|
| 75 |
|
|---|
| 76 |
|
|---|
| 77 | /**
|
|---|
| 78 | * Updates the paravirtualized TSC supported by the GIM provider.
|
|---|
| 79 | *
|
|---|
| 80 | * @returns VBox status code.
|
|---|
| 81 | * @retval VINF_SUCCESS if the paravirt. TSC is setup and in use.
|
|---|
| 82 | * @retval VERR_GIM_NOT_ENABLED if no GIM provider is configured for this VM.
|
|---|
| 83 | * @retval VERR_GIM_PVTSC_NOT_AVAILABLE if the GIM provider does not support any
|
|---|
| 84 | * paravirt. TSC.
|
|---|
| 85 | * @retval VERR_GIM_PVTSC_NOT_IN_USE if the GIM provider supports paravirt. TSC
|
|---|
| 86 | * but the guest isn't currently using it.
|
|---|
| 87 | *
|
|---|
| 88 | * @param pVM The cross context VM structure.
|
|---|
| 89 | * @param u64Offset The computed TSC offset.
|
|---|
| 90 | *
|
|---|
| 91 | * @thread EMT(pVCpu)
|
|---|
| 92 | */
|
|---|
| 93 | VMMR0_INT_DECL(int) GIMR0UpdateParavirtTsc(PVMCC pVM, uint64_t u64Offset)
|
|---|
| 94 | {
|
|---|
| 95 | switch (pVM->gim.s.enmProviderId)
|
|---|
| 96 | {
|
|---|
| 97 | case GIMPROVIDERID_HYPERV:
|
|---|
| 98 | return gimR0HvUpdateParavirtTsc(pVM, u64Offset);
|
|---|
| 99 |
|
|---|
| 100 | case GIMPROVIDERID_KVM:
|
|---|
| 101 | return VINF_SUCCESS;
|
|---|
| 102 |
|
|---|
| 103 | case GIMPROVIDERID_NONE:
|
|---|
| 104 | return VERR_GIM_NOT_ENABLED;
|
|---|
| 105 |
|
|---|
| 106 | default:
|
|---|
| 107 | break;
|
|---|
| 108 | }
|
|---|
| 109 | return VERR_GIM_PVTSC_NOT_AVAILABLE;
|
|---|
| 110 | }
|
|---|
| 111 |
|
|---|
