[PATCH] Mapping snooped user pages into the GTT

Chris Wilson chris at chris-wilson.co.uk
Wed Jan 12 03:34:44 PST 2011

On Wed, 12 Jan 2011 15:40:33 +0800, april <aapril03 at gmail.com> wrote:
> Dear  Chris:
> what do u mean " blit between snooped and unsnooped memory"?
> It seems you want to map user-space pixmap to GTT space, and use 2d
> copy to do upload/download?

Yes, and sample from snooped memory for some operations.
> TTM can map user space memory to GTT aperture by using
> "ttm_bo_type_user", but no dirver use it yet.??

Different driver, but thanks for reminding me to check ttm. It seems we
made slightly different choices over the lifetime of the gup, but
otherwise the same.

Chris Wilson, Intel Open Source Technology Centre

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