From: Robert Beckett <bob.beckett@collabora.com>
To: "Jani Nikula" <jani.nikula@linux.intel.com>,
"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
"Tvrtko Ursulin" <tvrtko.ursulin@linux.intel.com>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Matthew Auld" <matthew.auld@intel.com>,
"Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
"Oak Zeng" <oak.zeng@intel.com>
Cc: Robert Beckett <bob.beckett@collabora.com>,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] drm/i915/ttm: fix large buffer population trucation
Date: Fri, 10 Dec 2021 19:50:05 +0000 [thread overview]
Message-ID: <20211210195005.2582884-1-bob.beckett@collabora.com> (raw)
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>
---
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;
--
2.25.1
next reply other threads:[~2021-12-10 19:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-10 19:50 Robert Beckett [this message]
2021-12-13 13:02 ` [PATCH] drm/i915/ttm: fix large buffer population trucation Matthew Auld
2021-12-14 14:52 ` [Intel-gfx] " Matthew Auld
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