linux-kernel - [PATCH v5 2/3] drm/virtio: fix mmap page attributes

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Message-Id: <20200226154752.24328-3-kraxel@redhat.com>
Date:   Wed, 26 Feb 2020 16:47:51 +0100
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     tzimmermann@...e.de, gurchetansingh@...omium.org,
        olvaffe@...il.com, Guillaume.Gardet@....com,
        Gerd Hoffmann <kraxel@...hat.com>, stable@...r.kernel.org,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        virtualization@...ts.linux-foundation.org (open list:VIRTIO GPU DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v5 2/3] drm/virtio: fix mmap page attributes

virtio-gpu uses cached mappings, set
drm_gem_shmem_object.map_cached accordingly.

Cc: stable@...r.kernel.org
Fixes: c66df701e783 ("drm/virtio: switch from ttm to gem shmem helpers")
Reported-by: Gurchetan Singh <gurchetansingh@...omium.org>
Reported-by: Guillaume Gardet <Guillaume.Gardet@....com>
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 3d2a6d489bfc..59319435218f 100644
--- a/drivers/gpu/drm/virtio/virtgpu_object.c
+++ b/drivers/gpu/drm/virtio/virtgpu_object.c
@@ -119,6 +119,7 @@ struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev,
 		return NULL;
 
 	bo->base.base.funcs = &virtio_gpu_gem_funcs;
+	bo->base.map_cached = true;
 	return &bo->base.base;
 }
 
-- 
2.18.2