mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 18:21:39 +01:00
Andres Lagar-Cavilla
38ede5d03b
Since Linux's git commit ceb90fa0a8008059ecbbf9114cb89dc71a730bb6, the privcmd.h interface between Linux and libxc specifies two new constants, PRIVCMD_MMAPBATCH_MFN_ERROR and PRIVCMD_MMAPBATCH_PAGED_ERROR. These constants represent the error codes encoded in the top nibble of an mfn slot passed to the legacy MMAPBATCH ioctl. In particular, libxenctrl checks for the equivalent of the latter constant when dealing with paged out frames that might be the target of a foreign map. Previously, the relevant constant was defined in the domctl hypervisor interface header (XEN_DOMCTL_PFINFO_PAGEDTAB). Because this top-nibble encoding is a contract between the dom0 kernel and libxc, a domctl.h definition is misplaced. - Sync the privcmd.h header to that now available in upstream Linux - Update libxc appropriately - Remove the unnecessary constant in domctl.h Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org> Acked-by: Ian Campbell <ian.campbelL@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/******************************************************************************
|
|
* privcmd.h
|
|
*
|
|
* Interface to /proc/xen/privcmd.
|
|
*
|
|
* Copyright (c) 2003-2005, K A Fraser
|
|
*
|
|
* 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_PUBLIC_PRIVCMD_H__
|
|
#define __LINUX_PUBLIC_PRIVCMD_H__
|
|
|
|
#include <linux/types.h>
|
|
|
|
#ifndef __user
|
|
#define __user
|
|
#endif
|
|
|
|
typedef struct privcmd_hypercall
|
|
{
|
|
__u64 op;
|
|
__u64 arg[5];
|
|
} privcmd_hypercall_t;
|
|
|
|
typedef struct privcmd_mmap_entry {
|
|
__u64 va;
|
|
__u64 mfn;
|
|
__u64 npages;
|
|
} privcmd_mmap_entry_t;
|
|
|
|
typedef struct privcmd_mmap {
|
|
int num;
|
|
domid_t dom; /* target domain */
|
|
privcmd_mmap_entry_t __user *entry;
|
|
} privcmd_mmap_t;
|
|
|
|
typedef struct privcmd_mmapbatch {
|
|
int num; /* number of pages to populate */
|
|
domid_t dom; /* target domain */
|
|
__u64 addr; /* virtual address */
|
|
xen_pfn_t __user *arr; /* array of mfns - top nibble set on err */
|
|
} privcmd_mmapbatch_t;
|
|
|
|
#define PRIVCMD_MMAPBATCH_MFN_ERROR 0xf0000000U
|
|
#define PRIVCMD_MMAPBATCH_PAGED_ERROR 0x80000000U
|
|
|
|
typedef struct privcmd_mmapbatch_v2 {
|
|
unsigned int num; /* number of pages to populate */
|
|
domid_t dom; /* target domain */
|
|
__u64 addr; /* virtual address */
|
|
const xen_pfn_t __user *arr; /* array of mfns */
|
|
int __user *err; /* array of error codes */
|
|
} privcmd_mmapbatch_v2_t;
|
|
|
|
/*
|
|
* @cmd: IOCTL_PRIVCMD_HYPERCALL
|
|
* @arg: &privcmd_hypercall_t
|
|
* Return: Value returned from execution of the specified hypercall.
|
|
*/
|
|
#define IOCTL_PRIVCMD_HYPERCALL \
|
|
_IOC(_IOC_NONE, 'P', 0, sizeof(privcmd_hypercall_t))
|
|
#define IOCTL_PRIVCMD_MMAP \
|
|
_IOC(_IOC_NONE, 'P', 2, sizeof(privcmd_mmap_t))
|
|
#define IOCTL_PRIVCMD_MMAPBATCH \
|
|
_IOC(_IOC_NONE, 'P', 3, sizeof(privcmd_mmapbatch_t))
|
|
#define IOCTL_PRIVCMD_MMAPBATCH_V2 \
|
|
_IOC(_IOC_NONE, 'P', 4, sizeof(privcmd_mmapbatch_v2_t))
|
|
|
|
#endif /* __LINUX_PUBLIC_PRIVCMD_H__ */
|