diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 8296245..573f642 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -179,12 +179,16 @@ void intel_engine_init_seqno(struct intel_engine_cs *engine, u32 seqno) if (HAS_VEBOX(dev_priv)) I915_WRITE(RING_SYNC_2(engine->mmio_base), 0); } - if (dev_priv->semaphore_obj) { - struct drm_i915_gem_object *obj = dev_priv->semaphore_obj; - struct page *page = i915_gem_object_get_dirty_page(obj, 0); - void *semaphores = kmap(page); + if (dev_priv->semaphore) { + struct page *page = i915_vma_first_page(dev_priv->semaphore); + void *semaphores; + + /* Semaphores are in noncoherent memory, flush to be safe */ + semaphores = kmap(page); memset(semaphores + GEN8_SEMAPHORE_OFFSET(engine->id, 0), 0, I915_NUM_ENGINES * gen8_semaphore_seqno_size); + drm_clflush_virt_range(semaphores + GEN8_SEMAPHORE_OFFSET(engine->id, 0), + I915_NUM_ENGINES * gen8_semaphore_seqno_size); kunmap(page); } memset(engine->semaphore.sync_seqno, 0, |
