mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 06:55:13 +08:00
ab520be8cd
Recently a new dm_op[1] hypercall was added to Xen to provide a mechanism
for restricting device emulators (such as QEMU) to a limited set of
hypervisor operations, and being able to audit those operations in the
kernel of the domain in which they run.
This patch adds IOCTL_PRIVCMD_DM_OP as gateway for __HYPERVISOR_dm_op.
NOTE: There is no requirement for user-space code to bounce data through
locked memory buffers (as with IOCTL_PRIVCMD_HYPERCALL) since
privcmd has enough information to lock the original buffers
directly.
[1] http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=524a98c2
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/******************************************************************************
|
|
* hypercall.h
|
|
*
|
|
* Linux-specific hypervisor handling.
|
|
*
|
|
* Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Citrix, 2012
|
|
*
|
|
* 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 _ASM_ARM_XEN_HYPERCALL_H
|
|
#define _ASM_ARM_XEN_HYPERCALL_H
|
|
|
|
#include <linux/bug.h>
|
|
|
|
#include <xen/interface/xen.h>
|
|
#include <xen/interface/sched.h>
|
|
#include <xen/interface/platform.h>
|
|
|
|
long privcmd_call(unsigned call, unsigned long a1,
|
|
unsigned long a2, unsigned long a3,
|
|
unsigned long a4, unsigned long a5);
|
|
int HYPERVISOR_xen_version(int cmd, void *arg);
|
|
int HYPERVISOR_console_io(int cmd, int count, char *str);
|
|
int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
|
|
int HYPERVISOR_sched_op(int cmd, void *arg);
|
|
int HYPERVISOR_event_channel_op(int cmd, void *arg);
|
|
unsigned long HYPERVISOR_hvm_op(int op, void *arg);
|
|
int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
|
|
int HYPERVISOR_physdev_op(int cmd, void *arg);
|
|
int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args);
|
|
int HYPERVISOR_tmem_op(void *arg);
|
|
int HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type);
|
|
int HYPERVISOR_dm_op(domid_t domid, unsigned int nr_bufs, void *bufs);
|
|
int HYPERVISOR_platform_op_raw(void *arg);
|
|
static inline int HYPERVISOR_platform_op(struct xen_platform_op *op)
|
|
{
|
|
op->interface_version = XENPF_INTERFACE_VERSION;
|
|
return HYPERVISOR_platform_op_raw(op);
|
|
}
|
|
int HYPERVISOR_multicall(struct multicall_entry *calls, uint32_t nr);
|
|
|
|
static inline int
|
|
HYPERVISOR_suspend(unsigned long start_info_mfn)
|
|
{
|
|
struct sched_shutdown r = { .reason = SHUTDOWN_suspend };
|
|
|
|
/* start_info_mfn is unused on ARM */
|
|
return HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
|
|
}
|
|
|
|
static inline void
|
|
MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
|
|
unsigned int new_val, unsigned long flags)
|
|
{
|
|
BUG();
|
|
}
|
|
|
|
static inline void
|
|
MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
|
|
int count, int *success_count, domid_t domid)
|
|
{
|
|
BUG();
|
|
}
|
|
|
|
#endif /* _ASM_ARM_XEN_HYPERCALL_H */
|