Messages in this thread | | | From | Vitaly Kuznetsov <> | Subject | Re: [PATCH 2/2] KVM: x86: Forbid KVM_SET_CPUID{,2} after KVM_RUN | Date | Wed, 05 Jan 2022 11:09:58 +0100 |
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Paolo Bonzini <pbonzini@redhat.com> writes:
> 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. >
Good idea, I'll look into it (if noone beats me to it).
-- Vitaly
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