kernel/linux.git/drivers/gpu/drm/virtio/virtgpu_kms.c, branch linux-4.4.y

drm/virtio: Fix double free on probe failure

2021-07-20T14:22:37+00:00

[ Upstream commit cec7f1774605a5ef47c134af62afe7c75c30b0ee ] The virtio_gpu_init() will free vgdev and vgdev->vbufs on failure. But such failure will be caught by virtio_gpu_probe() and then virtio_gpu_release() will be called to do some cleanup which will free vgdev and vgdev->vbufs again. So let's set dev->dev_private to NULL to avoid double free. Signed-off-by: Xie Yongji Link: http://patchwork.freedesktop.org/patch/msgid/20210517084913.403-2-xieyongji@bytedance.com Signed-off-by: Gerd Hoffmann Signed-off-by: Sasha Levin

Fix use after free in get_capset_info callback.

2020-10-29T08:03:10+00:00

[ Upstream commit e219688fc5c3d0d9136f8d29d7e0498388f01440 ] If a response to virtio_gpu_cmd_get_capset_info takes longer than five seconds to return, the callback will access freed kernel memory in vg->capsets. Signed-off-by: Doug Horn Link: http://patchwork.freedesktop.org/patch/msgid/20200902210847.2689-2-gurchetansingh@chromium.org Signed-off-by: Gerd Hoffmann Signed-off-by: Sasha Levin

virtio-gpu: add 3d/virgl support

2015-10-16T08:44:02+00:00

Add the bits needed for opengl rendering support: query capabilities, new virtio commands, drm ioctls. Signed-off-by: Dave Airlie Signed-off-by: Gerd Hoffmann

drm/virtgpu: initialise fbdev after getting initial display info

2015-06-16T09:22:40+00:00

This should avoid issues with the fbdev path trying to render before we've gotten the display info. Signed-off-by: Dave Airlie [ kraxel: wait for display-info reply ] Signed-off-by: Gerd Hoffmann

Add virtio gpu driver.

2015-06-03T12:17:38+00:00

This patch adds a kms driver for the virtio gpu. The xorg modesetting driver can handle the device just fine, the framebuffer for fbcon is there too. Qemu patches for the host side are under review currently. The pci version of the device comes in two variants: with and without vga compatibility. The former has a extra memory bar for the vga framebuffer, the later is a pure virtio device. The only concern for this driver is that in the virtio-vga case we have to kick out the firmware framebuffer. Initial revision has only 2d support, 3d (virgl) support requires some more work on the qemu side and will be added later. Signed-off-by: Dave Airlie Signed-off-by: Gerd Hoffmann Acked-by: Michael S. Tsirkin