On Wed, Sep 01, 2021 at 11:16:19AM -0500, Brijesh Singh wrote: > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275 > > Platform features and capabilities are traditionally discovered via the > CPUID instruction. Hypervisors typically trap and emulate the CPUID > instruction for a variety of reasons. There are some cases where incorrect > CPUID information can potentially lead to a security issue. The SEV-SNP > firmware provides a feature to filter the CPUID results through the PSP. > The filtered CPUID values are saved on a special page for the guest to > consume. Reserve a page in MEMFD that will contain the results of > filtered CPUID values.
Is the format of the page documented somewhere? Is this snp-specific? Or could this also be used without snp? thanks, Gerd -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#80149): https://edk2.groups.io/g/devel/message/80149 Mute This Topic: https://groups.io/mt/85306655/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
