From: Jesse Barnes <jbarnes@sgi.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Albert Cahalan <albert@users.sourceforge.net>,
linux-kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] I/O space write barrier
Date: Mon, 4 Oct 2004 19:26:56 -0700 [thread overview]
Message-ID: <200410041926.57205.jbarnes@sgi.com> (raw)
In-Reply-To: <1096939347.24537.2.camel@gaston>
On Monday, October 04, 2004 6:22 pm, Benjamin Herrenschmidt wrote:
> On Tue, 2004-10-05 at 10:32, Albert Cahalan wrote:
> > Ideally, it would be eieio, and the eieio in each
> > of the IO operations would be removed. Finding and
> > fixing all the drivers that break looks impossible
> > though; most driver developers will be on x86 boxes.
>
> I don't agree. IO operations shouldn't be relaxed by
> default. That's really asking too much of driver writers
I agree, it's hard to get right, especially when you've got a large base of
drivers with hard to find assumptions about ordering.
What about mmiowb()? Should it be eieio? I don't want to post another patch
if I don't have to...
Thanks,
Jesse
next prev parent reply other threads:[~2004-10-05 2:27 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-04 20:39 [PATCH] I/O space write barrier Albert Cahalan
2004-10-04 21:20 ` Jesse Barnes
2004-10-05 0:32 ` Albert Cahalan
2004-10-05 1:22 ` Benjamin Herrenschmidt
2004-10-05 2:26 ` Jesse Barnes [this message]
2004-10-05 3:04 ` Benjamin Herrenschmidt
2004-10-05 15:33 ` Jesse Barnes
2004-10-05 22:41 ` Benjamin Herrenschmidt
2004-10-05 23:09 ` Jesse Barnes
2004-10-05 23:57 ` Roland Dreier
2004-10-06 1:45 ` Benjamin Herrenschmidt
2004-10-05 2:33 ` Jesse Barnes
-- strict thread matches above, loose matches on Subject: below --
2004-10-21 23:13 Jesse Barnes
2004-10-21 23:13 ` Jesse Barnes
2004-10-22 1:01 ` Grant Grundler
2004-10-22 1:01 ` Grant Grundler
2004-10-22 3:05 ` Jesse Barnes
2004-10-22 3:05 ` Jesse Barnes
2004-10-22 4:26 ` Greg Banks
2004-10-22 4:26 ` Greg Banks
2004-10-22 15:26 ` Grant Grundler
2004-10-22 15:26 ` Grant Grundler
2004-10-05 22:38 Jesse Barnes
2004-09-27 18:03 Jesse Barnes
2004-09-29 10:36 ` Greg Banks
2004-09-29 20:35 ` David S. Miller
2004-09-29 20:43 ` Jesse Barnes
2004-09-29 20:50 ` David S. Miller
2004-09-30 2:23 ` Greg Banks
2004-09-29 22:55 ` Jesse Barnes
2004-09-30 7:15 ` Jeremy Higdon
2004-09-30 21:21 ` Guennadi Liakhovetski
2004-10-16 0:38 ` Jeremy Higdon
2004-10-16 3:20 ` Matthew Wilcox
2004-10-16 3:31 ` Jeremy Higdon
2004-09-23 18:48 Jesse Barnes
2004-09-23 19:03 ` James Bottomley
2004-09-23 19:07 ` Jesse Barnes
2004-09-23 19:27 ` James Bottomley
2004-09-23 19:41 ` Jesse Barnes
2004-09-23 19:57 ` Jeremy Higdon
2004-09-23 22:22 ` Jeremy Higdon
2004-09-23 23:36 ` James Bottomley
2004-09-24 5:03 ` Jeremy Higdon
2004-09-23 19:55 ` Jeremy Higdon
2004-09-23 20:09 ` Jesse Barnes
2004-09-27 0:45 ` Benjamin Herrenschmidt
2004-09-27 15:41 ` Jesse Barnes
2004-09-22 15:45 Jesse Barnes
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