Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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..5ff9df89
--- /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) 2014-2022 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;
+}
+