Rather than call a function to compute the matching cachelines and
clflush them, just call the clflush *instruction* directly. We also know
that we can use the unpatched plain clflush rather than the clflushopt
alternative.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ringbuffer.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index dfb14bfe5bc8..e2b2dc2c2f49 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -393,8 +393,9 @@ intel_ring_sync_index(struct intel_engine_cs *ring,
static inline void
intel_flush_status_page(struct intel_engine_cs *ring, int reg)
{
- drm_clflush_virt_range(&ring->status_page.page_addr[reg],
- sizeof(uint32_t));
+ mb();
+ clflush(&ring->status_page.page_addr[reg]);
+ mb();
}
static inline u32
--
2.7.0
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