[libvirt PATCH 1/2] tools: fix handling of CPU family/model/stepping in SEV validation

[Peter Krempa]

On Fri, Aug 25, 2023 at 13:52:57 +0100, Daniel P. Berrangé wrote:
> The SEV-ES boot measurement includes the initial CPU register state
> (VMSA) and one of the fields includes the CPU identification. When
> building a VMSA blob we get the CPU family/model/stepping from the
> host capabilities, however, the VMSA must reflect the guest CPU not
> host CPU. Thus using host capabilities is only when whe the guest
> has the 'host-passthrough' CPU mode active. With 'host-model' it is
> cannot be assumed host and guest match, because QEMU may not (yet)
> have a named CPU model for a given host CPU.
> 
> Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
> ---
>  tools/virt-qemu-sev-validate | 5 +++++
>  1 file changed, 5 insertions(+)

Reviewed-by: Peter Krempa <pkrempa at redhat.com>