linux-kernel - Re: [PATCH] Revert "x86: optimize page faults like all other achitectures and kill notifier cruft"

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Message-Id: <20080108.232223.211829980.davem@davemloft.net>
Date:	Tue, 08 Jan 2008 23:22:23 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	hch@....de
Cc:	airlied@...ux.ie, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, ak@...e.de, pq@....fi,
	jbeulich@...ell.com, mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Revert "x86: optimize page faults like all other
 achitectures and kill notifier cruft"

From: Christoph Hellwig <hch@....de>
Date: Wed, 9 Jan 2008 08:17:27 +0100

> NACK.   If you want to do it you'll need a much better reason and an
> in-tree user.  And if you want to redo it it should be available for
> all platforms with a consistant API.

I majorly NACK this as well, we don't want to bring this thing
back especially for specialized debugging hacks.

You can set a kprobe on the x86 fault handler to do things like
mmiotrace.
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