linux-kernel - Re: Replacement for page fault notifiers?

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Date:	Tue, 8 Jan 2008 20:32:36 +0000
From:	Christoph Hellwig <hch@...radead.org>
To:	Pekka Paalanen <pq@....fi>
Cc:	linux-kernel@...r.kernel.org, jbeulich@...ell.com, proski@....org
Subject: Re: Replacement for page fault notifiers?

On Tue, Jan 08, 2008 at 09:06:38PM +0200, Pekka Paalanen wrote:
> - Is there anything coming to replace register_page_fault_notifier()?

no.

> - Has someone found another way to accomplish the same without patching
> the kernel?

no.

> - Should I start writing a patch to bring back the notifiers, based on
> the commit that removed them?

no.

> People started to complain to me that mmio-trace does not compile for
> 2.6.24. At least the Nouveau project is a regular user of mmio-trace
> for reverse-engineering, and the tool should be easy to use. Therefore
> I would prefer not to force casual contributors to patch their kernels
> as it might be too much for some. I am hoping that 2.6.25, if not
> 2.6.24, would contain a mechanism to accomplish what I need.

Please make mmio tracing generic enough so it works for every device and
submit it for inclusion as a config option.
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