From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: RealView: Do not use outer_sync() on certain with L210/L220
Date: Wed, 30 Jun 2010 09:56:56 +0100 [thread overview]
Message-ID: <1277888217.13942.0.camel@e102109-lin.cambridge.arm.com> (raw)
In-Reply-To: <AANLkTinpAz52QfsnvzIY5fleJoflVr0Z40JpRNrlXY9k@mail.gmail.com>
On Wed, 2010-06-30 at 09:13 +0100, Linus Walleij wrote:
> 2010/6/29 Catalin Marinas <catalin.marinas@arm.com>:
>
> > RealView boards with certain revisions of the L210/L220 cache controller
> > may have issues (hardware deadlock) with the recent changes to the mb()
> > barrier implementation (DSB followed by an L2 cache sync). The patch
> > disables ARM_DMA_MEM_BUFFERABLE for the RealView boards with L210/L220
> > and redefines the mandatory barriers without the outer_sync() call.
> >
> > Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
> > Cc: Linus Walleij <linus.ml.walleij@gmail.com>
>
> Works like a charm on the PB1176!
>
> Tested-by: Linus Walleij <linus.walleij@stericsson.com>
Thanks for testing. Just to be sure - was this with the CACHE_L2X0
enabled in your configuration?
--
Catalin
next prev parent reply other threads:[~2010-06-30 8:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-29 9:31 [PATCH] ARM: RealView: Do not use outer_sync() on certain with L210/L220 Catalin Marinas
2010-06-30 8:13 ` Linus Walleij
2010-06-30 8:56 ` Catalin Marinas [this message]
2010-06-30 21:32 ` Linus Walleij
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