Panfrost does not support uncached mappings, so flag them properly. Also flag the pages that are mapped as response to a page fault as cached. Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx> Signed-off-by: Ariel D'Alessandro <ariel.dalessandro@xxxxxxxxxxxxx> --- drivers/gpu/drm/panfrost/panfrost_mmu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index b91019cd5acb1..9e6f198ef5c1b 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -327,7 +327,7 @@ int panfrost_mmu_map(struct panfrost_gem_mapping *mapping) struct drm_gem_object *obj = &shmem->base; struct panfrost_device *pfdev = to_panfrost_device(obj->dev); struct sg_table *sgt; - int prot = IOMMU_READ | IOMMU_WRITE; + int prot = IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE; if (WARN_ON(mapping->active)) return 0; @@ -528,7 +528,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as, goto err_map; mmu_map_sg(pfdev, bomapping->mmu, addr, - IOMMU_WRITE | IOMMU_READ | IOMMU_NOEXEC, sgt); + IOMMU_WRITE | IOMMU_READ | IOMMU_CACHE | IOMMU_NOEXEC, sgt); bomapping->active = true; bo->heap_rss_size += SZ_2M; -- 2.47.2
