From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: "Desnes A. Nunes do Rosario" <desnesn@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Cc: leonardo@linux.ibm.com, desnesn@linux.ibm.com, gromero@linux.ibm.com
Subject: Re: [PATCH, v2] powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems
Date: Fri, 6 Mar 2020 11:11:49 +1100 (AEDT) [thread overview]
Message-ID: <48YSj11sTcz9sSM@ozlabs.org> (raw)
In-Reply-To: <20200227134715.9715-1-desnesn@linux.ibm.com>
On Thu, 2020-02-27 at 13:47:15 UTC, "Desnes A. Nunes do Rosario" wrote:
> PowerVM systems running compatibility mode on a few Power8 revisions are
> still vulnerable to the hardware defect that loses PMU exceptions arriving
> prior to a context switch.
>
> The software fix for this issue is enabled through the CPU_FTR_PMAO_BUG
> cpu_feature bit, nevertheless this bit also needs to be set for PowerVM
> compatibility mode systems.
>
> Fixes: 68f2f0d431d9ea4 ("powerpc: Add a cpu feature CPU_FTR_PMAO_BUG")
> Signed-off-by: Desnes A. Nunes do Rosario <desnesn@linux.ibm.com>
Applied to powerpc fixes, thanks.
https://git.kernel.org/powerpc/c/fc37a1632d40c80c067eb1bc235139f5867a2667
cheers
prev parent reply other threads:[~2020-03-06 0:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-27 13:47 [PATCH, v2] powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems Desnes A. Nunes do Rosario
2020-02-27 15:25 ` Leonardo Bras
2020-03-06 0:11 ` Michael Ellerman [this message]
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