diff options
| author | David Reveman <reveman@chromium.org> | 2018-05-23 06:41:30 -0400 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-06-19 14:38:53 -0700 |
| commit | 22272dd4b26cf1e3797ea8f7ea0331d71cbd399a (patch) | |
| tree | 7f3c2b6f191a1caa5b4fe45680e1956c3c14417e /seccomp | |
| parent | b657603f10daf62fa6fe18d56adbe35f6caf8587 (diff) | |
| download | crosvm-22272dd4b26cf1e3797ea8f7ea0331d71cbd399a.tar crosvm-22272dd4b26cf1e3797ea8f7ea0331d71cbd399a.tar.gz crosvm-22272dd4b26cf1e3797ea8f7ea0331d71cbd399a.tar.bz2 crosvm-22272dd4b26cf1e3797ea8f7ea0331d71cbd399a.tar.lz crosvm-22272dd4b26cf1e3797ea8f7ea0331d71cbd399a.tar.xz crosvm-22272dd4b26cf1e3797ea8f7ea0331d71cbd399a.tar.zst crosvm-22272dd4b26cf1e3797ea8f7ea0331d71cbd399a.zip | |
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>
Diffstat (limited to 'seccomp')
| -rw-r--r-- | seccomp/aarch64/wl_device.policy | 4 | ||||
| -rw-r--r-- | seccomp/x86_64/wl_device.policy | 8 |
2 files changed, 8 insertions, 4 deletions
diff --git a/seccomp/aarch64/wl_device.policy b/seccomp/aarch64/wl_device.policy index 9f21169..52bf028 100644 --- a/seccomp/aarch64/wl_device.policy +++ b/seccomp/aarch64/wl_device.policy @@ -30,8 +30,8 @@ write: 1 eventfd2: 1 # Used to connect to wayland. arg0 == AF_UNIX && arg1 == SOCK_STREAM|SOCK_CLOEXEC socket: arg0 == 1 && arg1 == 0x80001 && arg2 == 0 -# arg1 == FIONBIO -ioctl: arg1 == 0x5421 +# arg1 == FIONBIO || arg1 == DMA_BUF_IOCTL_SYNC +ioctl: arg1 == 0x5421 || arg1 == 0x40086200 connect: arg2 == 13 # Used to communicate with wayland recvmsg: 1 diff --git a/seccomp/x86_64/wl_device.policy b/seccomp/x86_64/wl_device.policy index 045e40f..cb8d6e4 100644 --- a/seccomp/x86_64/wl_device.policy +++ b/seccomp/x86_64/wl_device.policy @@ -1,3 +1,7 @@ +# Copyright 2018 The Chromium OS Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + close: 1 dup: 1 dup2: 1 @@ -25,8 +29,8 @@ write: 1 eventfd2: 1 # Used to connect to wayland. arg0 == AF_UNIX && arg1 == SOCK_STREAM|SOCK_CLOEXEC socket: arg0 == 1 && arg1 == 0x80001 && arg2 == 0 -# arg1 == FIONBIO -ioctl: arg1 == 0x5421 +# arg1 == FIONBIO || arg1 == DMA_BUF_IOCTL_SYNC +ioctl: arg1 == 0x5421 || arg1 == 0x40086200 connect: arg2 == 13 # Used to communicate with wayland recvmsg: 1 |