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18b5b14932
Reference: https://bugzilla.tianocore.org/show_bug.cgi?id=4031 This patch is similar to the c477b2783f patch for Td guest. Host VMM may inject OptionRom which is untrusted in Sev guest. So PCI OptionRom needs to be ignored if it is Sev guest. According to "Table 20. ACPI 2.0 & 3.0 QWORD Address Space Descriptor Usage" PI spec 1.7, type-specific flags can be set to 0 when Address Translation Offset == 6 to skip device option ROM. Without this patch, Sev guest may shows invalid MMIO opcode error as following: Invalid MMIO opcode (F6) ASSERT /home/abuild/rpmbuild/BUILD/edk2-edk2-stable202202/OvmfPkg/Library/VmgExitLib/VmgExitVcHandler.c(1041): ((BOOLEAN)(0==1)) The OptionRom must be disabled both on Td and Sev guests, so we direct use CcProbe(). Signed-off-by: "Lee, Chun-Yi" <jlee@suse.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>