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OvmfPkg/BaseMemEncryptSevLib: skip the pre-validated system RAM

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BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275

The MemEncryptSevSnpPreValidateSystemRam() is used for pre-validating the
system RAM. As the boot progress, each phase validates a fixed region of
the RAM. In the PEI phase, the PlatformPei detects all the available RAM
and calls to pre-validate the detected system RAM.

While validating the system RAM in PEI phase, we must skip previously
validated system RAM to avoid the double validation.

Cc: Michael Roth <michael.roth@amd.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
This commit is contained in:
Brijesh Singh
2021-12-09 11:27:44 +08:00
committed by mergify[bot]
parent d706f8fec2
commit 11b15336f0
2 changed files with 68 additions and 1 deletions
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2
OvmfPkg/Library/BaseMemEncryptSevLib/PeiMemEncryptSevLib.inf
View File

@@ -58,3 +58,5 @@
[FixedPcd]
gUefiCpuPkgTokenSpaceGuid.PcdSevEsWorkAreaBase
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfPeiMemFvBase
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPageTablesBase