Re: [PATCH v9 30/32] OvmfPkg/PlatformPei: mark cpuid and secrets memory reserved in EFI map


Gerd Hoffmann
 

On Wed, Oct 13, 2021 at 11:57:11AM -0500, Brijesh Singh wrote:
When SEV-SNP is active, the CPUID and Secrets memory range contains the
information that is used during the VM boot. The content need to be persist
across the kexec boot. Mark the memory range as Reserved in the EFI map
so that guest OS or firmware does not use the range as a system RAM.
Why is this needed? Isn't the complete firmware memory tagged as
reserved anyway?

take care,
Gerd

Join devel@edk2.groups.io to automatically receive all group messages.