mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 00:26:58 +07:00
e9f0fec3f5
Access for xenstored to the event channel and pre-allocated ring is managed via xenfs. This adds its own character device featuring mmap for the ring and an ioctl for the event channel. Signed-off-by: Bastian Blank <waldi@debian.org> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
42 lines
1.7 KiB
C
42 lines
1.7 KiB
C
/******************************************************************************
|
|
* evtchn.h
|
|
*
|
|
* Interface to /dev/xen/xenbus_backend.
|
|
*
|
|
* Copyright (c) 2011 Bastian Blank <waldi@debian.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation; or, when distributed
|
|
* separately from the Linux kernel or incorporated into other
|
|
* software packages, subject to the following license:
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this source file (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use, copy, modify,
|
|
* merge, publish, distribute, sublicense, and/or sell copies of the Software,
|
|
* and to permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef __LINUX_XEN_XENBUS_DEV_H__
|
|
#define __LINUX_XEN_XENBUS_DEV_H__
|
|
|
|
#include <linux/ioctl.h>
|
|
|
|
#define IOCTL_XENBUS_BACKEND_EVTCHN \
|
|
_IOC(_IOC_NONE, 'B', 0, 0)
|
|
|
|
#endif /* __LINUX_XEN_XENBUS_DEV_H__ */
|