Re: [PATCH V2 2/3] perf protect LBR when Intel PT is enabled.

[Andi Kleen]

On Wed, Jul 02, 2014 at 11:14:14AM -0700, kan.liang@xxxxxxxxx wrote:
> From: Kan Liang <kan.liang@xxxxxxxxx>
> 
> If RTIT_CTL.TraceEn=1, any attempt to read or write the LBR or LER MSRs, including LBR_TOS, will result in a #GP.
> Since Intel PT can be enabled/disabled at runtime, LBR MSRs have to be protected by _safe() at runtime.
> 
> Signed-off-by: Kan Liang <kan.liang@xxxxxxxxx>

Patch looks good to me.

-Andi
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