Messages in this thread | | | Date | Tue, 11 Jan 2022 09:00:22 +0100 | From | Igor Mammedov <> | Subject | Re: [PATCH 2/2] KVM: x86: Forbid KVM_SET_CPUID{,2} after KVM_RUN |
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On Fri, 7 Jan 2022 19:15:43 +0100 Paolo Bonzini <pbonzini@redhat.com> wrote:
> On 1/7/22 10:02, Vitaly Kuznetsov wrote: > > > > I'm again leaning towards an allowlist and currently I see only two > > candidates: > > > > CPUID.01H.EBX bits 31:24 (initial LAPIC id) > > CPUID.0BH.EDX (x2APIC id) > > > > Anything else I'm missing? > > I would also ignore completely CPUID leaves 03H, 04H, 0BH, 80000005h, > 80000006h, 8000001Dh, 8000001Eh (cache and processor topology), just to > err on the safe side.
on top of that,
1Fh
> We could change kvm_find_cpuid_entry to WARN if any of those leaves are > passed. > > Paolo >
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