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Tamas K Lengyel
4fa41d0504
Thus far mem_access and mem_sharing memops had been able to signal to Xen to start pulling responses off the corresponding rings. In this patch we retire these memops and add them to the option to the vm_event_op domctl. The vm_event_op domctl suboptions are the same for each ring thus we consolidate them into XEN_VM_EVENT_ENABLE/DISABLE/RESUME. As part of this patch in libxc we also rename the mem_access_enable/disable functions to monitor_enable/disable and move them into xc_monitor.c. Signed-off-by: Tamas K Lengyel <tamas.lengyel@zentific.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Acked-by: Tim Deegan <tim@xen.org>
138 lines
4.8 KiB
C
138 lines
4.8 KiB
C
/******************************************************************************
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*
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* xc_monitor.c
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*
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* Interface to VM event monitor
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*
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* Copyright (c) 2015 Tamas K Lengyel (tamas@tklengyel.com)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xc_private.h"
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void *xc_monitor_enable(xc_interface *xch, domid_t domain_id, uint32_t *port)
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{
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return xc_vm_event_enable(xch, domain_id, HVM_PARAM_MONITOR_RING_PFN,
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port);
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}
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int xc_monitor_disable(xc_interface *xch, domid_t domain_id)
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{
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return xc_vm_event_control(xch, domain_id,
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XEN_VM_EVENT_DISABLE,
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XEN_DOMCTL_VM_EVENT_OP_MONITOR,
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NULL);
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}
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int xc_monitor_resume(xc_interface *xch, domid_t domain_id)
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{
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return xc_vm_event_control(xch, domain_id,
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XEN_VM_EVENT_RESUME,
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XEN_DOMCTL_VM_EVENT_OP_MONITOR,
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NULL);
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}
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int xc_monitor_mov_to_cr0(xc_interface *xch, domid_t domain_id, bool enable,
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bool sync, bool onchangeonly)
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{
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_monitor_op;
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domctl.domain = domain_id;
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domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
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: XEN_DOMCTL_MONITOR_OP_DISABLE;
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domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_MOV_TO_CR0;
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domctl.u.monitor_op.u.mov_to_cr.sync = sync;
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domctl.u.monitor_op.u.mov_to_cr.onchangeonly = onchangeonly;
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return do_domctl(xch, &domctl);
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}
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int xc_monitor_mov_to_cr3(xc_interface *xch, domid_t domain_id, bool enable,
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bool sync, bool onchangeonly)
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{
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_monitor_op;
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domctl.domain = domain_id;
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domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
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: XEN_DOMCTL_MONITOR_OP_DISABLE;
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domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_MOV_TO_CR3;
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domctl.u.monitor_op.u.mov_to_cr.sync = sync;
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domctl.u.monitor_op.u.mov_to_cr.onchangeonly = onchangeonly;
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return do_domctl(xch, &domctl);
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}
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int xc_monitor_mov_to_cr4(xc_interface *xch, domid_t domain_id, bool enable,
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bool sync, bool onchangeonly)
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{
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_monitor_op;
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domctl.domain = domain_id;
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domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
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: XEN_DOMCTL_MONITOR_OP_DISABLE;
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domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_MOV_TO_CR4;
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domctl.u.monitor_op.u.mov_to_cr.sync = sync;
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domctl.u.monitor_op.u.mov_to_cr.onchangeonly = onchangeonly;
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return do_domctl(xch, &domctl);
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}
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int xc_monitor_mov_to_msr(xc_interface *xch, domid_t domain_id, bool enable,
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bool extended_capture)
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{
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_monitor_op;
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domctl.domain = domain_id;
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domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
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: XEN_DOMCTL_MONITOR_OP_DISABLE;
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domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_MOV_TO_MSR;
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domctl.u.monitor_op.u.mov_to_msr.extended_capture = extended_capture;
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return do_domctl(xch, &domctl);
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}
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int xc_monitor_software_breakpoint(xc_interface *xch, domid_t domain_id,
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bool enable)
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{
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_monitor_op;
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domctl.domain = domain_id;
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domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
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: XEN_DOMCTL_MONITOR_OP_DISABLE;
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domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_SOFTWARE_BREAKPOINT;
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return do_domctl(xch, &domctl);
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}
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int xc_monitor_singlestep(xc_interface *xch, domid_t domain_id,
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bool enable)
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{
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_monitor_op;
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domctl.domain = domain_id;
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domctl.u.monitor_op.op = enable ? XEN_DOMCTL_MONITOR_OP_ENABLE
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: XEN_DOMCTL_MONITOR_OP_DISABLE;
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domctl.u.monitor_op.event = XEN_DOMCTL_MONITOR_EVENT_SINGLESTEP;
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return do_domctl(xch, &domctl);
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}
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