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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2019-08-15 09:17:31 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-08-22 10:09:07 +0200 |
| commit | 50896de4be7e08fc47f857f6e0c0e9ab2654b941 (patch) | |
| tree | 7752015b517f3b0d9115894f9e872e058e2555ba /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | KVM: x86: fix reporting of AMD speculation bug CPUID leaf (diff) | |
| download | wireguard-linux-50896de4be7e08fc47f857f6e0c0e9ab2654b941.tar.xz wireguard-linux-50896de4be7e08fc47f857f6e0c0e9ab2654b941.zip | |
KVM: x86: always expose VIRT_SSBD to guests
Even though it is preferrable to use SPEC_CTRL (represented by
X86_FEATURE_AMD_SSBD) instead of VIRT_SPEC, VIRT_SPEC is always
supported anyway because otherwise it would be impossible to
migrate from old to new CPUs. Make this apparent in the
result of KVM_GET_SUPPORTED_CPUID as well.
However, we need to hide the bit on Intel processors, so move
the setting to svm_set_supported_cpuid.
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reported-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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