117 lines
4.0 KiB
Diff
117 lines
4.0 KiB
Diff
From 4e22a4d1c1d7b492d1e1eee4fa81c697e0d59314 Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Fri, 2 Dec 2022 14:09:58 +0100
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Subject: [PATCH 20/32] OvmfPkg/PlatformPei: AmdSev: stop using
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mPlatformInfoHob
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Stop using the mPlatformInfoHob global variable in AmdSevInitialize()
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and AmdSevEsInitialize() functions. Pass a pointer to the
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PlatformInfoHob instead.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
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Acked-by: Ard Biesheuvel <ardb@kernel.org>
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(cherry picked from commit 78c373f2a5273af00b23b55d3e8c41583310cfb6)
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---
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OvmfPkg/PlatformPei/Platform.h | 2 +-
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OvmfPkg/PlatformPei/AmdSev.c | 14 +++++++-------
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OvmfPkg/PlatformPei/Platform.c | 2 +-
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3 files changed, 9 insertions(+), 9 deletions(-)
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diff --git a/OvmfPkg/PlatformPei/Platform.h b/OvmfPkg/PlatformPei/Platform.h
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index 29b51b2debd8..f245025fb46f 100644
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--- a/OvmfPkg/PlatformPei/Platform.h
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+++ b/OvmfPkg/PlatformPei/Platform.h
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@@ -82,7 +82,7 @@ InstallClearCacheCallback (
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VOID
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AmdSevInitialize (
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- VOID
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+ IN EFI_HOB_PLATFORM_INFO *PlatformInfoHob
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);
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/**
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diff --git a/OvmfPkg/PlatformPei/AmdSev.c b/OvmfPkg/PlatformPei/AmdSev.c
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index e1b9fd9b7f68..c23fae7fcae0 100644
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--- a/OvmfPkg/PlatformPei/AmdSev.c
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+++ b/OvmfPkg/PlatformPei/AmdSev.c
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@@ -201,7 +201,7 @@ GhcbRegister (
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STATIC
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VOID
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AmdSevEsInitialize (
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- VOID
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+ IN EFI_HOB_PLATFORM_INFO *PlatformInfoHob
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)
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{
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UINT8 *GhcbBase;
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@@ -228,7 +228,7 @@ AmdSevEsInitialize (
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// Since the pages must survive across the UEFI to OS transition
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// make them reserved.
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//
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- GhcbPageCount = mPlatformInfoHob.PcdCpuMaxLogicalProcessorNumber * 2;
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+ GhcbPageCount = PlatformInfoHob->PcdCpuMaxLogicalProcessorNumber * 2;
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GhcbBase = AllocateReservedPages (GhcbPageCount);
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ASSERT (GhcbBase != NULL);
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@@ -266,7 +266,7 @@ AmdSevEsInitialize (
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// Allocate #VC recursion backup pages. The number of backup pages needed is
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// one less than the maximum VC count.
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//
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- GhcbBackupPageCount = mPlatformInfoHob.PcdCpuMaxLogicalProcessorNumber * (VMGEXIT_MAXIMUM_VC_COUNT - 1);
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+ GhcbBackupPageCount = PlatformInfoHob->PcdCpuMaxLogicalProcessorNumber * (VMGEXIT_MAXIMUM_VC_COUNT - 1);
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GhcbBackupBase = AllocatePages (GhcbBackupPageCount);
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ASSERT (GhcbBackupBase != NULL);
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@@ -320,7 +320,7 @@ AmdSevEsInitialize (
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**/
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VOID
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AmdSevInitialize (
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- VOID
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+ IN OUT EFI_HOB_PLATFORM_INFO *PlatformInfoHob
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)
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{
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UINT64 EncryptionMask;
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@@ -367,7 +367,7 @@ AmdSevInitialize (
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// until after re-encryption, in order to prevent an information leak to the
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// hypervisor.
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//
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- if (mPlatformInfoHob.SmmSmramRequire && (mPlatformInfoHob.BootMode != BOOT_ON_S3_RESUME)) {
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+ if (PlatformInfoHob->SmmSmramRequire && (PlatformInfoHob->BootMode != BOOT_ON_S3_RESUME)) {
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RETURN_STATUS LocateMapStatus;
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UINTN MapPagesBase;
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UINTN MapPagesCount;
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@@ -378,7 +378,7 @@ AmdSevInitialize (
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);
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ASSERT_RETURN_ERROR (LocateMapStatus);
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- if (mPlatformInfoHob.Q35SmramAtDefaultSmbase) {
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+ if (PlatformInfoHob->Q35SmramAtDefaultSmbase) {
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//
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// The initial SMRAM Save State Map has been covered as part of a larger
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// reserved memory allocation in InitializeRamRegions().
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@@ -400,7 +400,7 @@ AmdSevInitialize (
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//
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// Check and perform SEV-ES initialization if required.
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//
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- AmdSevEsInitialize ();
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+ AmdSevEsInitialize (PlatformInfoHob);
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//
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// Set the Confidential computing attr PCD to communicate which SEV
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diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
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index e5132d95a8f8..14a75d40c005 100644
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--- a/OvmfPkg/PlatformPei/Platform.c
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+++ b/OvmfPkg/PlatformPei/Platform.c
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@@ -392,7 +392,7 @@ InitializePlatform (
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}
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InstallClearCacheCallback ();
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- AmdSevInitialize ();
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+ AmdSevInitialize (&mPlatformInfoHob);
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if (mPlatformInfoHob.HostBridgeDevId == 0xffff) {
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MiscInitializationForMicrovm (&mPlatformInfoHob);
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} else {
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--
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2.38.1
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