diff options
| -rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c index 304c0b4a9d58..d3796ed8d8c5 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c @@ -342,7 +342,12 @@ u32 etnaviv_iommu_get_cmdbuf_va(struct etnaviv_gpu *gpu, mutex_unlock(&mmu->lock); return 0; } - mmu->last_iova = buf->vram_node.start + buf->size; + /* + * At least on GC3000 the FE MMU doesn't properly flush old TLB + * entries. Make sure to space the command buffers out in a way + * that the FE MMU prefetch won't load invalid entries. + */ + mmu->last_iova = buf->vram_node.start + buf->size + SZ_64K; gpu->mmu->need_flush = true; mutex_unlock(&mmu->lock); |