diff options
Diffstat (limited to 'src/VBox/VMM/VMMR0/GIMR0.cpp')
-rw-r--r-- | src/VBox/VMM/VMMR0/GIMR0.cpp | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/VBox/VMM/VMMR0/GIMR0.cpp b/src/VBox/VMM/VMMR0/GIMR0.cpp new file mode 100644 index 00000000..54b7560c --- /dev/null +++ b/src/VBox/VMM/VMMR0/GIMR0.cpp @@ -0,0 +1,121 @@ +/* $Id: GIMR0.cpp $ */ +/** @file + * Guest Interface Manager (GIM) - Host Context Ring-0. + */ + +/* + * Copyright (C) 2014-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_GIM +#include <VBox/vmm/gim.h> +#include "GIMInternal.h" +#include "GIMHvInternal.h" +#include <VBox/vmm/vmcc.h> + +#include <VBox/err.h> + + +/** + * Does ring-0 per-VM GIM initialization. + * + * @returns VBox status code. + * @param pVM The cross context VM structure. + */ +VMMR0_INT_DECL(int) GIMR0InitVM(PVMCC pVM) +{ + if (!GIMIsEnabled(pVM)) + return VINF_SUCCESS; + + switch (pVM->gim.s.enmProviderId) + { + case GIMPROVIDERID_HYPERV: + return gimR0HvInitVM(pVM); + + default: + break; + } + return VINF_SUCCESS; +} + + +/** + * Does ring-0 per-VM GIM termination. + * + * @returns VBox status code. + * @param pVM The cross context VM structure. + */ +VMMR0_INT_DECL(int) GIMR0TermVM(PVMCC pVM) +{ + if (!GIMIsEnabled(pVM)) + return VINF_SUCCESS; + + switch (pVM->gim.s.enmProviderId) + { + case GIMPROVIDERID_HYPERV: + return gimR0HvTermVM(pVM); + + default: + break; + } + return VINF_SUCCESS; +} + + +/** + * Updates the paravirtualized TSC supported by the GIM provider. + * + * @returns VBox status code. + * @retval VINF_SUCCESS if the paravirt. TSC is setup and in use. + * @retval VERR_GIM_NOT_ENABLED if no GIM provider is configured for this VM. + * @retval VERR_GIM_PVTSC_NOT_AVAILABLE if the GIM provider does not support any + * paravirt. TSC. + * @retval VERR_GIM_PVTSC_NOT_IN_USE if the GIM provider supports paravirt. TSC + * but the guest isn't currently using it. + * + * @param pVM The cross context VM structure. + * @param u64Offset The computed TSC offset. + * + * @thread EMT(pVCpu) + */ +VMMR0_INT_DECL(int) GIMR0UpdateParavirtTsc(PVMCC pVM, uint64_t u64Offset) +{ + switch (pVM->gim.s.enmProviderId) + { + case GIMPROVIDERID_HYPERV: + return gimR0HvUpdateParavirtTsc(pVM, u64Offset); + + case GIMPROVIDERID_KVM: + return VINF_SUCCESS; + + case GIMPROVIDERID_NONE: + return VERR_GIM_NOT_ENABLED; + + default: + break; + } + return VERR_GIM_PVTSC_NOT_AVAILABLE; +} + |