[Intel-gfx] [PATCH v2 3/4] drm/i915/gt: Re-work reset_csb

[Michael Cheng]

Use drm_clflush_virt_range instead of directly invoking clflush. This
will prevent compiler errors when building for non-x86 architectures.

Signed-off-by: Michael Cheng <michael.cheng at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_execlists_submission.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
index 90b5daf9433d..e8a2e2683b81 100644
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -2951,6 +2951,8 @@ reset_csb(struct intel_engine_cs *engine, struct i915_request **inactive)
 
 	mb(); /* paranoia: read the CSB pointers from after the reset */
 	clflush(execlists->csb_write);
+	drm_clflush_virt_range(execlists->csb_write,
+			sizeof(execlists->csb_write));
 	mb();
 
 	inactive = process_csb(engine, inactive); /* drain preemption events */
-- 
2.25.1