[Intel-gfx] [PATCH] drm/i915: Don't prefault the entire obj if the vma is smaller

[Daniel Vetter]

On Tue, Jun 17, 2014 at 09:03:28PM +0200, Daniel Vetter wrote:
> On Tue, Jun 17, 2014 at 8:03 PM,  <ville.syrjala at linux.intel.com> wrote:
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> >
> > Take the minimum of the object size and the vma size and prefault
> > only that much. Avoids a SIGBUS when mmapping only a portion of the
> > object.
> >
> > Prefaulting was introduced here:
> >  commit b90b91d87038f6b257b40a02b42ed4f9705e06f0
> >  Author: Chris Wilson <chris at chris-wilson.co.uk>
> >  Date:   Tue Jun 10 12:14:40 2014 +0100
> >
> >     drm/i915: Prefault the entire object on first page fault
> >
> > Cc: Chris Wilson <chris at chris-wilson.co.uk>
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Do we have an igt for this?

Well, written one since trivial to do and merged the patch. Thanks.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch