On Fri, 7 Jan 2022 19:15:43 +0100 Paolo Bonzini <pbonzini@xxxxxxxxxx> 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 >
