[Intel-gfx] [PATCH 4/4] drm/i915: ILK + VT-d workaround

[Ben Widawsky]

On Tue, 18 Oct 2011 09:24:41 +0200
Paul Menzel <paulepanter at users.sourceforge.net> wrote:

> Am Montag, den 17.10.2011, 15:51 -0700 schrieb Ben Widawsky:
> > Idle the GPU before doing any unmaps. We know if VT-d is in use through
> > an exported variable from iommu code.
> > 
> > This should avoid a known HW issue.
> 
> Please describe the issue more in detail or provide a link to more
> information.
> 
> > Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> > ---
> >  drivers/char/agp/intel-gtt.c        |   28 ++++++++++++++++++++++++++++
> >  drivers/gpu/drm/i915/i915_gem_gtt.c |   30 ++++++++++++++++++++++++++++++
> >  include/drm/intel-gtt.h             |    2 ++
> >  3 files changed, 60 insertions(+), 0 deletions(-)
> 
> […]
> 
> 
> Thanks,
> 
> Paul

Please see patch 1 and 2 in the series for the description.