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| author | Gerd Hoffmann <kraxel@redhat.com> | 2018-08-27 11:34:44 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2018-09-03 13:29:38 +0200 |
| commit | fbb0de795078190a9834b3409e4b009cfb18a6d4 (patch) | |
| tree | 65e82b3e44c500715a6c1045217abc3469ff3530 /Documentation/ioctl | |
| parent | b972cece9448c55a2464d61787c955ab28110a40 (diff) | |
| download | linux-fbb0de795078190a9834b3409e4b009cfb18a6d4.tar.gz linux-fbb0de795078190a9834b3409e4b009cfb18a6d4.tar.bz2 linux-fbb0de795078190a9834b3409e4b009cfb18a6d4.zip | |
Add udmabuf misc device
A driver to let userspace turn memfd regions into dma-bufs.
Use case: Allows qemu create dmabufs for the vga framebuffer or
virtio-gpu ressources. Then they can be passed around to display
those guest things on the host. To spice client for classic full
framebuffer display, and hopefully some day to wayland server for
seamless guest window display.
qemu test branch:
https://git.kraxel.org/cgit/qemu/log/?h=sirius/udmabuf
Cc: David Airlie <airlied@linux.ie>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180827093444.23623-1-kraxel@redhat.com
Diffstat (limited to 'Documentation/ioctl')
| -rw-r--r-- | Documentation/ioctl/ioctl-number.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/ioctl/ioctl-number.txt b/Documentation/ioctl/ioctl-number.txt index 13a7c999c04a..f2ac672eb766 100644 --- a/Documentation/ioctl/ioctl-number.txt +++ b/Documentation/ioctl/ioctl-number.txt @@ -272,6 +272,7 @@ Code Seq#(hex) Include File Comments 't' 90-91 linux/toshiba.h toshiba and toshiba_acpi SMM 'u' 00-1F linux/smb_fs.h gone 'u' 20-3F linux/uvcvideo.h USB video class host driver +'u' 40-4f linux/udmabuf.h userspace dma-buf misc device 'v' 00-1F linux/ext2_fs.h conflict! 'v' 00-1F linux/fs.h conflict! 'v' 00-0F linux/sonypi.h conflict! |