In truly crazy circumstances shmem might give us the wrong type of page. So be a bit paranoid and double check this. Cc: Rob Clark <robdclark@xxxxxxxxx> References: http://lkml.org/lkml/2011/7/11/238 Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> --- drivers/gpu/drm/i915/i915_gem.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 8508b3d..55fdd20 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1827,6 +1827,9 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) sg->length += PAGE_SIZE; } last_pfn = page_to_pfn(page); + + /* Check that the i965g/gm workaround works. */ + WARN_ON((gfp & __GFP_DMA32) && (last_pfn >= 0x00100000UL)); } #ifdef CONFIG_SWIOTLB if (!swiotlb_nr_tbl()) -- 1.8.3.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
