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| author | Matthew Auld <matthew.auld@intel.com> | 2020-12-24 15:13:58 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-12 20:16:23 +0100 |
| commit | 828f2a20f946ff3a2ef2190cfc6118cc629568f1 (patch) | |
| tree | 0bd92497153235b6b7cf19ab1d3ea36b78757762 | |
| parent | ef8133b1b47ed67873c291e9248fafd428d1767d (diff) | |
| download | linux-stable-828f2a20f946ff3a2ef2190cfc6118cc629568f1.tar.gz linux-stable-828f2a20f946ff3a2ef2190cfc6118cc629568f1.tar.bz2 linux-stable-828f2a20f946ff3a2ef2190cfc6118cc629568f1.zip | |
drm/i915: clear the gpu reloc batch
commit 641382e9b44fba81a0778e1914ee35b8471121f9 upstream.
The reloc batch is short lived but can exist in the user visible ppGTT,
and since it's backed by an internal object, which lacks page clearing,
we should take care to clear it upfront.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20201224151358.401345-2-matthew.auld@intel.com
Cc: stable@vger.kernel.org
(cherry picked from commit 26ebc511e799f621357982ccc37a7987a56a00f4)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index 7f7d59445fae..198a91c76531 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -936,7 +936,7 @@ static void reloc_gpu_flush(struct reloc_cache *cache) GEM_BUG_ON(cache->rq_size >= obj->base.size / sizeof(u32)); cache->rq_cmd[cache->rq_size] = MI_BATCH_BUFFER_END; - __i915_gem_object_flush_map(obj, 0, sizeof(u32) * (cache->rq_size + 1)); + i915_gem_object_flush_map(obj); i915_gem_object_unpin_map(obj); intel_gt_chipset_flush(cache->rq->engine->gt); @@ -1163,6 +1163,8 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb, goto out_pool; } + memset32(cmd, 0, pool->obj->base.size / sizeof(u32)); + batch = i915_vma_instance(pool->obj, vma->vm, NULL); if (IS_ERR(batch)) { err = PTR_ERR(batch); |