From: "Bryan O'Sullivan" <bos@pathscale.com>
To: Andi Kleen <ak@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
akpm@osdl.org, paulus@samba.org, benh@kernel.crashing.org,
bcrl@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Define flush_wc, a way to flush write combining store buffers
Date: Wed, 08 Mar 2006 14:05:47 -0800 [thread overview]
Message-ID: <1141855547.27555.16.camel@localhost.localdomain> (raw)
In-Reply-To: <200603081535.25515.ak@suse.de>
On Wed, 2006-03-08 at 15:35 +0100, Andi Kleen wrote:
> > How is this different to mmiowb() ?
>
> I think he intends it to be a flush instead of an ordering.
> (something like CLFLUSH for WC areas)
Exactly. mmiowb guarantees ordering, but says nothing about timing.
This would guarantee ordering, affect WC store buffers if present, and
try to work in a timely manner.
<b
--
Bryan O'Sullivan <bos@pathscale.com>
next prev parent reply other threads:[~2006-03-08 22:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-08 21:31 Bryan O'Sullivan
2006-03-08 21:38 ` Benjamin Herrenschmidt
2006-03-08 21:37 ` Benjamin LaHaise
2006-03-08 21:43 ` Bryan O'Sullivan
2006-03-08 14:21 ` Andi Kleen
2006-03-08 21:57 ` Bryan O'Sullivan
2006-03-08 14:38 ` Andi Kleen
2006-03-09 1:26 ` Bryan O'Sullivan
2006-03-08 23:40 ` Benjamin Herrenschmidt
2006-03-09 1:48 ` Bryan O'Sullivan
2006-03-08 22:06 ` Alan Cox
2006-03-08 14:35 ` Andi Kleen
2006-03-08 22:05 ` Bryan O'Sullivan [this message]
2006-03-08 14:40 ` Andi Kleen
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