From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: The mandatory barrier rmb() must be a dsb() in for device accesses
Date: Thu, 28 Apr 2011 22:37:38 +0100 [thread overview]
Message-ID: <BANLkTinpDetPeHhTxo-TdgG65xCTkx3JbA@mail.gmail.com> (raw)
In-Reply-To: <20110428184538.GL17290@n2100.arm.linux.org.uk>
On Thursday, 28 April 2011, Russell King - ARM Linux
<linux@arm.linux.org.uk> wrote:
> So, what am I supposed to do with 6870/1 (rmb) and the wmb patch?
> One or other is wrong - they certainly are not both correct as rmb()
> can not be stronger than wmb().
Given Ming's reply to the wmb patch he posted, you should discard the
wmb patch. As for the rmb one (6870/1), I already explained why it is
needed.
--
Catalin
prev parent reply other threads:[~2011-04-28 21:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-25 10:16 [PATCH] ARM: The mandatory barrier rmb() must be a dsb() in for device accesses Catalin Marinas
2011-03-29 15:02 ` Martin Furmanski
2011-03-29 15:21 ` Catalin Marinas
[not found] ` <AANLkTim1=686NAO7ox8s-HAd_KT4OjiUb1Y7jrUtgia3@mail.gmail.com>
[not found] ` <1301416642.583.101.camel@e102109-lin.cambridge.arm.com>
2011-03-29 21:06 ` Martin Furmanski
2011-03-30 8:53 ` Catalin Marinas
2011-04-07 7:07 ` Ming Lei
2011-04-09 8:57 ` Catalin Marinas
2011-04-09 17:03 ` Ming Lei
2011-04-10 10:10 ` Catalin Marinas
2011-04-11 5:43 ` Ming Lei
2011-04-28 18:45 ` Russell King - ARM Linux
2011-04-28 21:37 ` Catalin Marinas [this message]
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