linux-kernel - Re: [PATCH] perf/x86/intel: Fix spurious NMI on fixed counter

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Message-ID: <20190710193743.GC32439@tassilo.jf.intel.com>
Date:   Wed, 10 Jul 2019 12:37:43 -0700
From:   Andi Kleen <ak@...ux.intel.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     "Jin, Yao" <yao.jin@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>,
        kan.liang@...ux.intel.com, mingo@...hat.com, jolsa@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf/x86/intel: Fix spurious NMI on fixed counter

> > > oops, I overlooed this, looks good
> > > 
> > > Acked-by: Jiri Olsa <jolsa@...nel.org>
> 
> Have it now, thanks!

Can Kan's patch please be merged asap and also put into stable for 5.2?

The regression causes crashes on Icelake when fixed counters
are used in PEBS groups, and presumably also on Goldmont Plus.

I just had to debug this again until I realized it was the 
same problem.

-Andi