From 5c0a90da40f88ae42323e71e367c389a7217e271 Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Thu, 17 Dec 2009 06:27:55 +0000 Subject: imported patch mem_event_tools_domctls.patch --- tools/libxc/Makefile | 1 + tools/libxc/xc_mem_event.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++ tools/libxc/xenctrl.h | 13 ++++++++++ 3 files changed, 73 insertions(+) create mode 100644 tools/libxc/xc_mem_event.c (limited to 'tools/libxc') diff --git a/tools/libxc/Makefile b/tools/libxc/Makefile index c0fd44b502..a36b6acf36 100644 --- a/tools/libxc/Makefile +++ b/tools/libxc/Makefile @@ -22,6 +22,7 @@ CTRL_SRCS-y += xc_pm.c CTRL_SRCS-y += xc_cpu_hotplug.c CTRL_SRCS-y += xc_resume.c CTRL_SRCS-y += xc_tmem.c +CTRL_SRCS-y += xc_mem_event.c CTRL_SRCS-$(CONFIG_X86) += xc_pagetab.c CTRL_SRCS-$(CONFIG_Linux) += xc_linux.c CTRL_SRCS-$(CONFIG_SunOS) += xc_solaris.c diff --git a/tools/libxc/xc_mem_event.c b/tools/libxc/xc_mem_event.c new file mode 100644 index 0000000000..17dbf542ef --- /dev/null +++ b/tools/libxc/xc_mem_event.c @@ -0,0 +1,59 @@ +/****************************************************************************** + * + * xc_mem_event.c + * + * Interface to low-level memory event functionality. + * + * Copyright (c) 2009 Citrix (R&D) Ltd. (Patrick Colp) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "xc_private.h" + +int xc_mem_event_control(int xc_handle, domid_t domain_id, unsigned int op, + unsigned int mode, void *shared_page, + void *ring_page, unsigned long gfn) +{ + DECLARE_DOMCTL; + + domctl.cmd = XEN_DOMCTL_mem_event_op; + domctl.domain = domain_id; + domctl.u.mem_event_op.op = op; + domctl.u.mem_event_op.mode = mode; + + domctl.u.mem_event_op.shared_addr = (unsigned long)shared_page; + domctl.u.mem_event_op.ring_addr = (unsigned long)ring_page; + + domctl.u.mem_event_op.gfn = gfn; + + return do_domctl(xc_handle, &domctl); +} + +int xc_mem_event_enable(int xc_handle, domid_t domain_id, + void *shared_page, void *ring_page) +{ + return xc_mem_event_control(xc_handle, domain_id, + XEN_DOMCTL_MEM_EVENT_OP_ENABLE, 0, + shared_page, ring_page, INVALID_MFN); +} + +int xc_mem_event_disable(int xc_handle, domid_t domain_id) +{ + return xc_mem_event_control(xc_handle, domain_id, + XEN_DOMCTL_MEM_EVENT_OP_DISABLE, 0, + NULL, NULL, INVALID_MFN); +} + diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h index 4b30398023..234695f791 100644 --- a/tools/libxc/xenctrl.h +++ b/tools/libxc/xenctrl.h @@ -47,6 +47,8 @@ #define XC_PAGE_SIZE (1UL << XC_PAGE_SHIFT) #define XC_PAGE_MASK (~(XC_PAGE_SIZE-1)) +#define INVALID_MFN (~0UL) + /* * DEFINITIONS FOR CPU BARRIERS */ @@ -1312,4 +1314,15 @@ void xc_tmem_save_done(int xc_handle, int dom); int xc_tmem_restore(int xc_handle, int dom, int fd); int xc_tmem_restore_extra(int xc_handle, int dom, int fd); +/** + * mem_event operations + */ +int xc_mem_event_control(int xc_handle, domid_t domain_id, unsigned int op, + unsigned int mode, void *shared_page, + void *ring_page, unsigned long gfn); + +int xc_mem_event_enable(int xc_handle, domid_t domain_id, + void *shared_page, void *ring_page); +int xc_mem_event_disable(int xc_handle, domid_t domain_id); + #endif /* XENCTRL_H */ -- cgit v1.2.3