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drm/i915: disable ppgtt on snb when dmar is enabled

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Totally unexpected that this regressed. Luckily it sounds like we just
need to have dmar disable on the igfx, not the entire system. At least
that's what a few days of testing between Tony Vroon and me indicates.

Reported-by: Tony Vroon <tony@linx.net>
Cc: Tony Vroon <tony@linx.net>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43024
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-04-02 10:08:35 +02:00
commit 650dc07ec3
5 changed files with 23 additions and 5 deletions
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4
include/drm/intel-gtt.h
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@ -44,4 +44,8 @@ void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
/* flag for GFDT type */
#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
#ifdef CONFIG_INTEL_IOMMU
extern int intel_iommu_gfx_mapped;
#endif
#endif