On 15/08/19 19:14, Eduardo Habkost wrote:
> On Thu, Aug 15, 2019 at 09:41:23AM +0200, Paolo Bonzini wrote:
>> 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
On Thu, Aug 15, 2019 at 09:41:23AM +0200, Paolo Bonzini wrote:
> 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
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.
Cc:
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