Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 6c6d0a72c25ee4a43179d9d25b938eaa1381f8c8
https://github.com/tianocore/edk2/commit/6c6d0a72c25ee4a43179d9d25b938eaa1381f8c8
Author: FangSheng Huang <[email protected]>
Date: 2026-07-20 (Mon, 20 Jul 2026)
Changed paths:
M OvmfPkg/PlatformPei/AmdSev.c
Log Message:
-----------
OvmfPkg/PlatformPei: retain SoftReserved memory under SEV-SNP
Soft Reserved (Specific Purpose Memory) regions carry the
EFI_RESOURCE_ATTRIBUTE_SPECIAL_PURPOSE attribute, which the OS sees as
EFI_MEMORY_SP (E820 Soft Reserved). Under SEV-SNP this does not reach the
guest: AmdSevSnpInitialize() changes every EFI_RESOURCE_SYSTEM_MEMORY HOB
above 4GB to EFI_RESOURCE_MEMORY_UNACCEPTED, and AcceptAllMemory() later
re-adds the region as plain system memory without EFI_MEMORY_SP, so the
guest sees ordinary RAM instead of Soft Reserved.
Exclude SPECIAL_PURPOSE regions from the unaccepted conversion so they keep
the EFI_RESOURCE_SYSTEM_MEMORY type and are pre-validated in place, like
sub-4GB memory.
Signed-off-by: FangSheng Huang <[email protected]>
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