Re: Replacement for page fault notifiers?

Dave Airlie
2008-01-08T22:13:27Z

On Jan 9, 2008 6:32 AM, Christoph Hellwig <hch@infradead.org> wrote:
> 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.
>

Christoph,

it is generic code, it works by patching the module you load and is in
no way nvidia specific, I think we should revert your chance
as the notifiers have a valid user and one it has been planned to upstream..

Dave.