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SubjectRe: [PATCH 2/2] KVM: x86: Forbid KVM_SET_CPUID{,2} after KVM_RUN
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On 1/3/22 13:56, Vitaly Kuznetsov wrote:
> 'allowlist' of things which can change (and put
> *APICids there) and only fail KVM_SET_CPUID{,2} when we see something
> else changing.

We could also go the other way and only deny changes that result in
changed CPU caps. That should be easier to implement since we have
already a mapping from CPU capability words to CPUID leaves and registers.

Paolo

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