Re: [PATCH 1/2] KVM: x86/pmu: Don't truncate the PerfEvtSeln MSR when creating a perf event

[David Dunn <daviddunn@xxxxxxxxxx>]

Reviewed-by: David Dunn <daviddunn@xxxxxxxxxx>


On Wed, Feb 2, 2022 at 5:52 PM Jim Mattson <jmattson@xxxxxxxxxx> wrote:
>
> AMD's event select is 3 nybbles, with the high nybble in bits 35:32 of
> a PerfEvtSeln MSR. Don't drop the high nybble when setting up the
> config field of a perf_event_attr structure for a call to
> perf_event_create_kernel_counter().