If the LLC is coherent with the object, we do not need to worry about whether main memory and cache mismatch when we hand the object back to the system. Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/i915_gem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 4931bfcff2a2..3b021e9e3379 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -228,7 +228,8 @@ __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj, if (obj->mm.madv == I915_MADV_DONTNEED) obj->mm.dirty = false; - if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) + if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0 && + !cpu_cache_is_coherent(obj->base.dev, obj->cache_level)) drm_clflush_sg(pages); obj->base.read_domains = I915_GEM_DOMAIN_CPU; -- 2.10.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
