From: Robert Beckett Date: Fri, 10 Dec 2021 19:50:05 +0000 (+0000) Subject: drm/i915/ttm: fix large buffer population trucation X-Git-Tag: v5.17-rc1~25^2~11^2~38 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=5719d4fee1caed83979b21ad4cf34d46abf97514;p=tomoyo%2Ftomoyo-test1.git drm/i915/ttm: fix large buffer population trucation 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 Reviewed-by: Matthew Auld Signed-off-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20211210195005.2582884-1-bob.beckett@collabora.com --- 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;