Re: Help with Understanding vcpu xstate restore error during vm migration

[Fonyuy-Asheri Caleb <fonyuy-asheri.caleb@xxxxxxxx>]

----- Original Message -----
> From: "Jan Beulich" <jbeulich@xxxxxxxx>
> To: "Fonyuy-Asheri Caleb" <fonyuy-asheri.caleb@xxxxxxxx>
> Cc: "xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "Andrew Cooper" 
> <andrew.cooper3@xxxxxxxxxx>
> Sent: Monday, July 15, 2024 10:16:07 AM
> Subject: Re: Help with Understanding vcpu xstate restore error during vm 
> migration

> On 15.07.2024 09:38, Fonyuy-Asheri Caleb wrote:
>>> Perhaps the more important question, are you booting the skylake with
>>> cpuid=no-avx on the command line by any chance?
>> 
>> No. I didn't boot any of the machines with any cpuid modification whatsoever.
> 
> Yet is there perhaps "Mitigating GDS by disabling AVX" in the boot log of
> the hypervisor (which sadly so far you didn't supply anywhere afaics)?

I didn't notice that. Unfortunately I no longer have access to the logs to 
check since I was 
working on resources I reserved for a limited period.

However, do you mind telling me what this would mean for my environment?

For more context, what I'm trying to investigate here is the impact of xstate 
and xsave dependencies on live migration.

> 
> Jan

Caleb