We only need to clflush those cachelines that we have validated to be read by the GPU. Userspace typically fills the batch length in correctly, the exceptions tend to be explicit tests within igt. Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/i915_cmd_parser.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c index 21b1cd917d81..b9ce9a6881ea 100644 --- a/drivers/gpu/drm/i915/i915_cmd_parser.c +++ b/drivers/gpu/drm/i915/i915_cmd_parser.c @@ -1331,7 +1331,8 @@ int intel_engine_cmd_parser(struct intel_engine_cs *engine, } if (ret == 0 && needs_clflush_after) - drm_clflush_virt_range(shadow_batch_obj->mm.mapping, batch_len); + drm_clflush_virt_range(shadow_batch_obj->mm.mapping, + (void *)cmd - shadow_batch_obj->mm.mapping); i915_gem_object_unpin_map(shadow_batch_obj); return ret; -- 2.11.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
