From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Nicholas Piggin <npiggin@gmail.com>, linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: Re: powerpc/powernv: Fix SMT4 forcing idle code
Date: Thu, 5 Apr 2018 00:39:52 +1000 (AEST) [thread overview]
Message-ID: <40GTBc23sJz9s32@ozlabs.org> (raw)
In-Reply-To: <20180401053813.17405-1-npiggin@gmail.com>
On Sun, 2018-04-01 at 05:38:13 UTC, Nicholas Piggin wrote:
> PSSCR value is not stored to PACA_REQ_PSSCR in case the CPU does
> not have the XER[SO] bug.
>
> Fix this by storing up-front, outside the workaround code. The
> initial test is not required because it is a slow path.
>
> The workaround is made to depend on CONFIG_KVM_BOOK3S_HV_POSSIBLE, to
> match pnv_power9_force_smt4_catch() where it is used.
>
> Fixes: 7672691a08 ("powerpc/powernv: Provide a way to force a core into SMT4 mode")
> Cc: Paul Mackerras <paulus@ozlabs.org>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/a2b5e056b75ee6ef0777817644a456
cheers
prev parent reply other threads:[~2018-04-04 14:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-01 5:38 [PATCH] powerpc/powernv: Fix SMT4 forcing idle code Nicholas Piggin
2018-04-04 14:39 ` Michael Ellerman [this message]
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