From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v2] powerpc/perf: Disable trace_imc pmu
Date: Mon, 9 Dec 2019 16:45:08 +1100 (AEDT) [thread overview]
Message-ID: <47WXGD2ddxz9sPh@ozlabs.org> (raw)
In-Reply-To: <20191118034452.9939-1-maddy@linux.vnet.ibm.com>
On Mon, 2019-11-18 at 03:44:52 UTC, Madhavan Srinivasan wrote:
> When a root user or a user with CAP_SYS_ADMIN
> privilege use trace_imc performance monitoring
> unit events, to monitor application or KVM threads,
> may result in a checkstop (System crash). Reason
> being frequent switch of the "trace/accumulation"
> mode of In-Memory Collection hardware.
> This patch disables trace_imc pmu unit, but will
> be re-enabled at a later stage with a fix patchset.
>
> Fixes: 012ae244845f1 ('powerpc/perf: Trace imc PMU functions')
> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/249fad734a25889a4f23ed014d43634af6798063
cheers
prev parent reply other threads:[~2019-12-09 5:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-18 3:44 [PATCH v2] powerpc/perf: Disable trace_imc pmu Madhavan Srinivasan
2019-11-22 8:03 ` Hariharan T S
2019-12-09 5:45 ` Michael Ellerman [this message]
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