On Mon, 13 Dec 2021 at 13:03, Matthew Auld matthew.auld@intel.com wrote:
On 10/12/2021 19:50, Robert Beckett wrote:
ttm->num_pages is uint32_t which was causing very large buffers to only populate a truncated size.
This fixes gem_create@create-clear igt test on large memory systems.
Fixes: 7ae034590cea ("drm/i915/ttm: add tt shmem backend") Signed-off-by: Robert Beckett bob.beckett@collabora.com
Nice catch, Reviewed-by: Matthew Auld matthew.auld@intel.com
Pushed to drm-intel-gt-next. Thanks again for the fix.
drivers/gpu/drm/i915/gem/i915_gem_ttm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c index 218a9b3037c7..923cc7ad8d70 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c @@ -166,7 +166,7 @@ static int i915_ttm_tt_shmem_populate(struct ttm_device *bdev, struct intel_memory_region *mr = i915->mm.regions[INTEL_MEMORY_SYSTEM]; struct i915_ttm_tt *i915_tt = container_of(ttm, typeof(*i915_tt), ttm); const unsigned int max_segment = i915_sg_segment_size();
const size_t size = ttm->num_pages << PAGE_SHIFT;
const size_t size = (size_t)ttm->num_pages << PAGE_SHIFT; struct file *filp = i915_tt->filp; struct sgt_iter sgt_iter; struct sg_table *st;