linux-kernel - Re: [RESEND PATCH] perf/x86/intel/uncore: Fix M2M event umask for Ice Lake server

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Date:   Tue, 1 Jun 2021 15:56:37 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     kan.liang@...ux.intel.com
Cc:     mingo@...hat.com, linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        yao.jin@...ux.intel.com, stable@...r.kernel.org
Subject: Re: [RESEND PATCH] perf/x86/intel/uncore: Fix M2M event umask for
 Ice Lake server

On Tue, Jun 01, 2021 at 06:09:03AM -0700, kan.liang@...ux.intel.com wrote:
> From: Kan Liang <kan.liang@...ux.intel.com>
> 
> Perf tool errors out with the latest event list for the Ice Lake server.
> 
> event syntax error: 'unc_m2m_imc_reads.to_pmm'
>                            \___ value too big for format, maximum is 255
> 
> The same as the Snow Ridge server, the M2M uncore unit in the Ice Lake
> server has the unit mask extension field as well.
> 
> Fixes: 2b3b76b5ec67 ("perf/x86/intel/uncore: Add Ice Lake server uncore support")
> Reported-by: Jin Yao <yao.jin@...ux.intel.com>
> Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
> Cc: stable@...r.kernel.org

Thanks!