mirror of
https://github.com/xen-project/xen.git
synced 2026-10-29 02:30:03 +01:00
Razvan Cojocaru
712bdd0185
As suggested by Andrew Cooper, this patch attempts to remove some redundancy and allow for an easier time when adding vm_events for new control registers in the future, by having a single VM_EVENT_REASON_WRITE_CTRLREG vm_event type, meant to serve CR0, CR3, CR4 and (newly introduced) XCR0. The actual control register will be deduced by the new .index field in vm_event_write_ctrlreg (renamed from vm_event_mov_to_cr). Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com> Acked-by: Jan Beulich <jbeulich@suse.com> Acked-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Tim Deegan <tim@xen.org>
108 lines
3.7 KiB
C
108 lines
3.7 KiB
C
/******************************************************************************
|
|
*
|
|
* xc_monitor.c
|
|
*
|
|
* Interface to VM event monitor
|
|
*
|
|
* Copyright (c) 2015 Tamas K Lengyel (tamas@tklengyel.com)
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "xc_private.h"
|
|
|
|
void *xc_monitor_enable(xc_interface *xch, domid_t domain_id, uint32_t *port)
|
|
{
|
|
return xc_vm_event_enable(xch, domain_id, HVM_PARAM_MONITOR_RING_PFN,
|
|
port);
|
|
}
|
|
|
|
int xc_monitor_disable(xc_interface *xch, domid_t domain_id)
|
|
{
|
|
return xc_vm_event_control(xch, domain_id,
|
|
XEN_VM_EVENT_DISABLE,
|
|
XEN_DOMCTL_VM_EVENT_OP_MONITOR,
|
|
NULL);
|
|
}
|
|
|
|
int xc_monitor_resume(xc_interface *xch, domid_t domain_id)
|
|
{
|
|
return xc_vm_event_control(xch, domain_id,
|
|
XEN_VM_EVENT_RESUME,
|
|
XEN_DOMCTL_VM_EVENT_OP_MONITOR,
|
|
NULL);
|
|
}
|
|
|
|
int xc_monitor_write_ctrlreg(xc_interface *xch, domid_t domain_id,
|
|
uint16_t index, bool enable, bool sync,
|
|
bool onchangeonly)
|
|
{
|
|
DECLARE_DOMCTL;
|
|
|
|
domctl.cmd = XEN_DOMCTL_monitor_op;
|
|
domctl.domain = domain_id;
|
|
domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
|
|
: XEN_DOMCTL_MONITOR_OP_DISABLE;
|
|
domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_WRITE_CTRLREG;
|
|
domctl.u.monitor_op.u.mov_to_cr.index = index;
|
|
domctl.u.monitor_op.u.mov_to_cr.sync = sync;
|
|
domctl.u.monitor_op.u.mov_to_cr.onchangeonly = onchangeonly;
|
|
|
|
return do_domctl(xch, &domctl);
|
|
}
|
|
|
|
int xc_monitor_mov_to_msr(xc_interface *xch, domid_t domain_id, bool enable,
|
|
bool extended_capture)
|
|
{
|
|
DECLARE_DOMCTL;
|
|
|
|
domctl.cmd = XEN_DOMCTL_monitor_op;
|
|
domctl.domain = domain_id;
|
|
domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
|
|
: XEN_DOMCTL_MONITOR_OP_DISABLE;
|
|
domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_MOV_TO_MSR;
|
|
domctl.u.monitor_op.u.mov_to_msr.extended_capture = extended_capture;
|
|
|
|
return do_domctl(xch, &domctl);
|
|
}
|
|
|
|
int xc_monitor_software_breakpoint(xc_interface *xch, domid_t domain_id,
|
|
bool enable)
|
|
{
|
|
DECLARE_DOMCTL;
|
|
|
|
domctl.cmd = XEN_DOMCTL_monitor_op;
|
|
domctl.domain = domain_id;
|
|
domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
|
|
: XEN_DOMCTL_MONITOR_OP_DISABLE;
|
|
domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_SOFTWARE_BREAKPOINT;
|
|
|
|
return do_domctl(xch, &domctl);
|
|
}
|
|
|
|
int xc_monitor_singlestep(xc_interface *xch, domid_t domain_id,
|
|
bool enable)
|
|
{
|
|
DECLARE_DOMCTL;
|
|
|
|
domctl.cmd = XEN_DOMCTL_monitor_op;
|
|
domctl.domain = domain_id;
|
|
domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
|
|
: XEN_DOMCTL_MONITOR_OP_DISABLE;
|
|
domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_SINGLESTEP;
|
|
|
|
return do_domctl(xch, &domctl);
|
|
}
|