Daan De Meyer
0ef9bf9723
The ICH9-LPC disable_s3 global QEMU config was a workaround for an
OVMF limitation where S3 resume didn't work with X64 PEI + SMM. SMM is
required for secure boot as it prevents the guest from writing directly
to the pflash, bypassing UEFI variable protections. With X64 PEI + SMM
enabled and S3 advertised, OVMF would hang on S3 resume. The
workaround was to tell QEMU not to advertise S3 support.
This limitation has been resolved in edk2 — the S3Verification() check
was removed in edk2 commit 098c5570 ("OvmfPkg/PlatformPei: drop
S3Verification()") after edk2 gained native X64 PEI + SMM + S3 resume
support. See https://github.com/tianocore/edk2/commit/098c5570.
Drop the now-unnecessary ICH9-LPC disable_s3 config entirely, and
guard the cfi.pflash01 secure=on setting with an x86 architecture
check since SMM is x86-specific and this option is invalid on ARM.
System and Service Manager
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