Re: [Xen-devel] probe_intel_cpuid_faulting() behavior

["Liu, Jinsong" <jinsong.liu@xxxxxxxxx>]

Jan Beulich wrote:
> Jinsong,
> 
> somehow it escaped my attention so far that this probing, on a CPU
> not supporting the respective MSR, necessarily produces a GPF log
> message. Since such instances are generally a reason to worry,
> would it be possible to at least avoid this for all CPU
> families/models below a certain level (the system I'm seeing this on
> is family 0xf model 6)? If so, could you provide precise cut-off
> values (I can of course easily enough create a patch myself once I
> have the 
> numbers)?
> 
> Jan

Sorry, no. It's non-architectural but no official/precise family/model/stepping 
provided, so enumeration has to tolerate GPF log on legacy processors. What is 
more, no guarantee for future processors also support it.

Thanks,
Jinsong
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