diff options
Diffstat (limited to 'kernels/linux-libre-lts-xen/i915-gpu-finish.patch')
| -rw-r--r-- | kernels/linux-libre-lts-xen/i915-gpu-finish.patch | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/kernels/linux-libre-lts-xen/i915-gpu-finish.patch b/kernels/linux-libre-lts-xen/i915-gpu-finish.patch deleted file mode 100644 index 5840c9181..000000000 --- a/kernels/linux-libre-lts-xen/i915-gpu-finish.patch +++ /dev/null @@ -1,55 +0,0 @@ -commit 389a55581e30607af0fcde6cdb4e54f189cf46cf -Author: Chris Wilson <chris@chris-wilson.co.uk> -Date: Tue Nov 29 15:12:16 2011 +0000 - - drm/i915: Only clear the GPU domains upon a successful finish - - By clearing the GPU read domains before waiting upon the buffer, we run - the risk of the wait being interrupted and the domains prematurely - cleared. The next time we attempt to wait upon the buffer (after - userspace handles the signal), we believe that the buffer is idle and so - skip the wait. - - There are a number of bugs across all generations which show signs of an - overly haste reuse of active buffers. - - Such as: - - https://bugs.freedesktop.org/show_bug.cgi?id=29046 - https://bugs.freedesktop.org/show_bug.cgi?id=35863 - https://bugs.freedesktop.org/show_bug.cgi?id=38952 - https://bugs.freedesktop.org/show_bug.cgi?id=40282 - https://bugs.freedesktop.org/show_bug.cgi?id=41098 - https://bugs.freedesktop.org/show_bug.cgi?id=41102 - https://bugs.freedesktop.org/show_bug.cgi?id=41284 - https://bugs.freedesktop.org/show_bug.cgi?id=42141 - - A couple of those pre-date i915_gem_object_finish_gpu(), so may be - unrelated (such as a wild write from a userspace command buffer), but - this does look like a convincing cause for most of those bugs. - - Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> - Cc: stable@kernel.org - Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> - Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com> - -diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c -index d560175..036bc58 100644 ---- a/drivers/gpu/drm/i915/i915_gem.c -+++ b/drivers/gpu/drm/i915/i915_gem.c -@@ -3087,10 +3087,13 @@ i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj) - return ret; - } - -+ ret = i915_gem_object_wait_rendering(obj); -+ if (ret) -+ return ret; -+ - /* Ensure that we invalidate the GPU's caches and TLBs. */ - obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; -- -- return i915_gem_object_wait_rendering(obj); -+ return 0; - } - - /** |