Messages in this thread | | | Date | Mon, 26 Feb 2018 14:05:54 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH] KVM: X86: Allow userspace to define the microcode version |
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On Mon, Feb 26, 2018 at 01:41:38PM +0100, Paolo Bonzini wrote: > More like "-cpu foo,ucode_rev=0xdeadbeef". But in practice what would > happen is one of the following: > > 1) "-cpu host" sets ucode_rev to the same value of the host, everyone > else leaves it to zero as is now. > > 2) Only Amazon uses this feature and we ignore it. :)
I fear that that might get misused and we probably should consider some trivial range checking and each qemu cpu model would have a valid range or so.
Or we should better do that in kvm_set_msr_common directly... although if we do it here, it would require kvm knowing about all those different microcode revisions and qemu cpu models sounds better...
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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