Re: [Xen-devel] [PATCH v3 7/8] x86/HVM: don't needlessly intercept APERF/MPERF/TSC MSR reads

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Jan Beulich <jbeulich@xxxxxxxx>
> Sent: Tuesday, January 7, 2020 12:39 AM
> 
> If the hardware can handle accesses, we should allow it to do so. This
> way we can expose EFRO to HVM guests, and "all" that's left for exposing
> APERF/MPERF is to figure out how to handle writes to these MSRs. (Note
> that the leaf 6 guest CPUID checks will evaluate to false for now, as
> recalculate_misc() zaps the entire leaf for now.)
> 
> For TSC the intercepts are made mirror the RDTSC ones.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
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