From 4035b1bfb1e5843a539a8b624d21952b756974d1 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 27 Apr 2024 16:19:18 +0200
Subject: Adding upstream version 6.1.22-dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/VBox/VMM/VMMR0/GIMR0.cpp | 111 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 src/VBox/VMM/VMMR0/GIMR0.cpp

(limited to 'src/VBox/VMM/VMMR0/GIMR0.cpp')

diff --git a/src/VBox/VMM/VMMR0/GIMR0.cpp b/src/VBox/VMM/VMMR0/GIMR0.cpp
new file mode 100644
index 00000000..69667273
--- /dev/null
+++ b/src/VBox/VMM/VMMR0/GIMR0.cpp
@@ -0,0 +1,111 @@
+/* $Id: GIMR0.cpp $ */
+/** @file
+ * Guest Interface Manager (GIM) - Host Context Ring-0.
+ */
+
+/*
+ * Copyright (C) 2014-2020 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 <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;
+}
+
-- 
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