linux-kernel - [PATCH v3 3/4] drm/virtio: fix mmap page attributes

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Message-Id: <20191211121957.18637-4-kraxel@redhat.com>
Date:   Wed, 11 Dec 2019 13:19:55 +0100
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     tzimmermann@...e.de, gurchetansingh@...omium.org,
        Gerd Hoffmann <kraxel@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 3/4] drm/virtio: fix mmap page attributes

virtio-gpu uses cached mappings, set virtio_gpu_gem_funcs.pgprot
accordingly.

Reported-by: Gurchetan Singh <gurchetansingh@...omium.org>
Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
---
 drivers/gpu/drm/virtio/virtgpu_object.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c
index 017a9e0fc3bb..0b754c5bbcce 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -87,6 +87,7 @@ static const struct drm_gem_object_funcs virtio_gpu_gem_funcs = {
 	.vmap = drm_gem_shmem_vmap,
 	.vunmap = drm_gem_shmem_vunmap,
 	.mmap = &drm_gem_shmem_mmap,
+	.pgprot = &drm_gem_pgprot_cached,
 };
 
 struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
-- 
2.18.1