crosvm/seccomp
David Reveman 22272dd4b2 virtwl: implement dmabuf sync support
This provides proper synchronization for guest access to
DMABufs.

Virtio wayland device is given access to the DMA_BUF_SYNC ioctl
in order to implement this. Being able to use this directly in
the virtio wayland device process is important as these calls
can sometimes be relatively expensive and they are frequent
enough that avoiding another context switch is useful for good
performance.

TEST=cache-line artifacts no longer noticeable
BUG=chromium:837209

Change-Id: Ibb8d7c01f70ed5b74afd69288015a65186fec52a
Reviewed-on: https://chromium-review.googlesource.com/1076928
Commit-Ready: David Reveman <reveman@chromium.org>
Tested-by: David Reveman <reveman@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-06-19 14:38:53 -07:00
..
aarch64 virtwl: implement dmabuf sync support 2018-06-19 14:38:53 -07:00
x86_64 virtwl: implement dmabuf sync support 2018-06-19 14:38:53 -07:00