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Re: [PULL 20/59] target/i386: kvm: initialize microcode revision from KV
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From: |
Alex Williamson |
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Subject: |
Re: [PULL 20/59] target/i386: kvm: initialize microcode revision from KVM |
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Date: |
Fri, 7 Feb 2020 08:51:58 -0700 |
On Fri, 7 Feb 2020 00:40:31 +0100
Paolo Bonzini <address@hidden> wrote:
> On 07/02/20 00:24, Alex Williamson wrote:
> > Hey Paolo,
> >
> > My Windows 10 VM boot loops with this :-\ It seems to be related to
> > the CPU model. Now fails (host-passthrough):
> >
> > -cpu
> > host,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KeenlyKVM,kvm=off
> >
>
> Can you try adding ucode-rev=0x100000000 just to double check that it's
> the microcode version?
Yes, it boots with:
-cpu
host,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff,hv-vendor-id=KeenlyKVM,kvm=off,ucode-rev=0x100000000
> Also perhaps doing "rdmsr 0x8b" and if you have
> anything set in bits 0-31 clearing them.
How would I do that? Thanks,
Alex