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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-13 22:31:40 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-14 11:03:49 +0000 |
| commit | 7a90f89904afe66ff029bd784679aa293baacb72 (patch) | |
| tree | 24c86c90a419ec9683050f9d581f2043466943b1 /drivers/gpu/drm/i915/gem/i915_gem_domain.c | |
| parent | 9c569784a422e9eaa1c6f61e46a41011391e4d1d (diff) | |
| download | linux-7a90f89904afe66ff029bd784679aa293baacb72.tar.bz2 | |
drm/i915/gem: Serialise object before changing cache-level
Wait for the object to be idle before changing its cache-level and
unbinding. This was dropped as supposedly superfluous from commit
8b1c78e06e61 ("drm/i915: Avoid calling i915_gem_object_unbind holding
object lock"), but it turns out to prevent some cache dirt escaping.
Smells like papering over a race...
Closes: https://gitlab.freedesktop.org/drm/intel/issues/820
Fixes: 8b1c78e06e61 ("drm/i915: Avoid calling i915_gem_object_unbind holding object lock")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191213223140.1830738-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_domain.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_domain.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_domain.c b/drivers/gpu/drm/i915/gem/i915_gem_domain.c index 88ab7e71f36c..65f1851e2863 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_domain.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_domain.c @@ -190,6 +190,13 @@ int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, if (obj->cache_level == cache_level) return 0; + ret = i915_gem_object_wait(obj, + I915_WAIT_INTERRUPTIBLE | + I915_WAIT_ALL, + MAX_SCHEDULE_TIMEOUT); + if (ret) + return ret; + ret = i915_gem_object_lock_interruptible(obj); if (ret) return ret; |