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(a)redhat.com>
---
tools/virt-qemu-sev-validate | 5 +++++
1 file changed, 5 insertions(+)
Reviewed-by: Peter Krempa <pkrempa(a)redhat.com>