From: Michael Ellerman <patch-notifications@ellerman•id.au>
To: Michael Ellerman <mpe@ellerman•id.au>, linuxppc-dev@ozlabs•org
Cc: paulus@samba•org, npiggin@gmail•com
Subject: Re: powerpc/64s: Fix DT CPU features Power9 DD2.1 logic
Date: Wed, 20 Jun 2018 09:21:11 +1000 (AEST) [thread overview]
Message-ID: <419P9343Byz9s4b@ozlabs.org> (raw)
In-Reply-To: <20180613132356.29246-1-mpe@ellerman.id.au>
On Wed, 2018-06-13 at 13:23:56 UTC, Michael Ellerman wrote:
> In the device tree CPU features quirk code we want to set
> CPU_FTR_POWER9_DD2_1 on all Power9s that aren't DD2.0 or earlier. But
> we got the logic wrong and instead set it on all CPUs that aren't
> Power9 DD2.0 or earlier, ie. including Power8.
>
> Fix it by making sure we're on a Power9. This isn't a bug in practice
> because the only code that checks the feature is Power9 only to begin
> with. But we'll backport it anyway to avoid confusion.
>
> Fixes: 9e9626ed3a4a ("powerpc/64s: Fix POWER9 DD2.2 and above in DT CPU features")
> Cc: stable@vger•kernel.org # v4.17+
> Reported-by: Paul Mackerras <paulus@samba•org>
> Signed-off-by: Michael Ellerman <mpe@ellerman•id.au>
> Acked-by: Nicholas Piggin <npiggin@gmail•com>
Applied to powerpc fixes.
https://git.kernel.org/powerpc/c/749a0278c2177b2d16da5d8b135ba7
cheers
prev parent reply other threads:[~2018-06-19 23:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-13 13:23 [PATCH] powerpc/64s: Fix DT CPU features Power9 DD2.1 logic Michael Ellerman
2018-06-13 14:31 ` Nicholas Piggin
2018-06-19 23:21 ` Michael Ellerman [this message]
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