Re: [RFC/PATCH, 2/4] readX_check() performance evaluation

From: Hironobu Ishii <ishii.hironobu_at_jp.fujitsu.com>
Date: 2004-01-29 23:24:52
From: "Linus Torvalds" <torvalds@osdl.org>
To: "Andi Kleen" <ak@suse.de>
Cc: <willy@debian.org>; <ishii.hironobu@jp.fujitsu.com>; <linux-kernel@vger.kernel.org>; <linux-ia64@vger.kernel.org>
Sent: Thursday, January 29, 2004 7:59 AM
Subject: Re: [RFC/PATCH, 2/4] readX_check() performance evaluation


> 
> 
> On Wed, 28 Jan 2004, Andi Kleen wrote:
> > > Doing a status read from the device should do it (just read the config 
> > > space, for example).
> > 
> > The device is just not known. iirc you only get a bit in the bridge, which
> > leaves a wide choice.
> 
> read_pcix_error() _does_ know the device. The driver tells it.
> 
> Remember: none of this should be done at machine check time. 
> 
> Linus

Thank you for a lot of comments.
I prefer Linus's I/F than callback(exception) I/F,
because I can recover from intermittent errors.

I'd need time to consider how to map these I/F onto ia64 platform.
Later, I will post the result.

Thank you.
Hironobu Ishii

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Received on Thu Jan 29 07:25:35 2004

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