From mboxrd@z Thu Jan  1 00:00:00 1970
From: Russell King <rmk+lkml@arm.linux.org.uk>
Date: Wed, 28 Jan 2004 08:58:25 +0000
Subject: Re: [RFC/PATCH, 2/4] readX_check() performance evaluation
Message-Id: <20040128085825.A3591@flint.arm.linux.org.uk>
List-Id: <linux-ia64.vger.kernel.org>
References: <00a301c3e541$c13a6350$2987110a@lsd.css.fujitsu.com> <Pine.LNX.4.58.0401271847440.10794@home.osdl.org>
In-Reply-To: <Pine.LNX.4.58.0401271847440.10794@home.osdl.org>; from torvalds@osdl.org on Tue, Jan 27, 2004 at 06:55:17PM -0800
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: Linus Torvalds <torvalds@osdl.org>
Cc: Hironobu Ishii <ishii.hironobu@jp.fujitsu.com>, linux-kernel <linux-kernel@vger.kernel.org>, linux-ia64 <linux-ia64@vger.kernel.org>

On Tue, Jan 27, 2004 at 06:55:17PM -0800, Linus Torvalds wrote:
> Does anybody see any downsides to something like this?

What if the failing PCI access happened in an interrupt routine?
(I'm thinking of the situation where you may need to read the PCI
status registers to find out whether an error occurred.)

Also, for that matter, what if a network device receives an abort
while performing BM-DMA?

Do we even care about either of these two scenarios?

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:  2.6 PCMCIA      - http://pcmcia.arm.linux.org.uk/
                 2.6 Serial core