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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2024-03-08 07:30:33 -0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-04-17 18:30:03 +0000 |
| commit | 5bdb091133b98652f366e666c5c8bc4de1513f2b (patch) | |
| tree | 3f4c34314394d9c538ee95a4d04f1f1130775adb /UefiCpuPkg/Include | |
| parent | 8a6471819b55336c88d029149a397791adb2d829 (diff) | |
| download | edk2-5bdb091133b98652f366e666c5c8bc4de1513f2b.tar.gz edk2-5bdb091133b98652f366e666c5c8bc4de1513f2b.tar.bz2 edk2-5bdb091133b98652f366e666c5c8bc4de1513f2b.zip | |
UefiCpuPkg/MpInitLib: Always use AP Create if GhcbApicIds HOB is present
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4654
Currently, the first time an AP is started for an SEV-SNP guest, it relies
on the VMSA as set by the hypervisor. If the list of APIC IDs has been
retrieved, this is not necessary. The list of APIC IDs will be identified
by a GUIDed HOB. If the GUIDed HOB is present, use the SEV-SNP AP Create
protocol to start the AP for the first time and each time thereafter.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Ray Ni <ray.ni@intel.com>
Diffstat (limited to 'UefiCpuPkg/Include')
| -rw-r--r-- | UefiCpuPkg/Include/Guid/GhcbApicIds.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/UefiCpuPkg/Include/Guid/GhcbApicIds.h b/UefiCpuPkg/Include/Guid/GhcbApicIds.h new file mode 100644 index 0000000000..9d5bfcb0de --- /dev/null +++ b/UefiCpuPkg/Include/Guid/GhcbApicIds.h @@ -0,0 +1,17 @@ +/** @file
+ APIC ID list retrieved for an SEV-ES/SEV-SNP guest via the GHCB.
+
+ Copyright (C) 2024, Advanced Micro Devices, Inc. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef GHCB_APIC_IDS_H_
+#define GHCB_APIC_IDS_H_
+
+#define GHCB_APIC_IDS_GUID \
+ { 0xbc964338, 0xee39, 0x4fc8, { 0xa2, 0x24, 0x10, 0x10, 0x8b, 0x17, 0x80, 0x1b }}
+
+extern EFI_GUID gGhcbApicIdsGuid;
+
+#endif
|