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author | Keir Fraser <keir.fraser@citrix.com> | 2009-12-17 06:27:55 +0000 |
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committer | Keir Fraser <keir.fraser@citrix.com> | 2009-12-17 06:27:55 +0000 |
commit | 5c0a90da40f88ae42323e71e367c389a7217e271 (patch) | |
tree | d72cb5079c269e8649378a4056c25acd4f793172 /tools/libxc/xc_mem_event.c | |
parent | bd8fd8c198f6a1acc9ac86775977136fdb1ff5a7 (diff) | |
download | xen-5c0a90da40f88ae42323e71e367c389a7217e271.tar.gz xen-5c0a90da40f88ae42323e71e367c389a7217e271.tar.bz2 xen-5c0a90da40f88ae42323e71e367c389a7217e271.zip |
imported patch mem_event_tools_domctls.patch
Diffstat (limited to 'tools/libxc/xc_mem_event.c')
-rw-r--r-- | tools/libxc/xc_mem_event.c | 59 |
1 files changed, 59 insertions, 0 deletions
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); +} + |