diff options
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_gpu.c')
| -rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index 169db7cc0ec6..a31eeff2b297 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -781,6 +781,14 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu) gpu->identity.features &= ~chipFeatures_FAST_CLEAR; } + /* + * If the GPU is part of a system with DMA addressing limitations, + * request pages for our SHM backend buffers from the DMA32 zone to + * hopefully avoid performance killing SWIOTLB bounce buffering. + */ + if (dma_addressing_limited(gpu->dev)) + priv->shm_gfp_mask |= GFP_DMA32; + /* Create buffer: */ ret = etnaviv_cmdbuf_init(priv->cmdbuf_suballoc, &gpu->buffer, PAGE_SIZE); |