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https://github.com/xen-project/xen.git
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Keir Fraser
5cc436c1d2
This patch eliminate the global variables in libxenctrl (used for logging and error reporting). Instead the information which was in the global variables is now in a new xc_interface* opaque structure, which xc_interface open returns instead of the raw file descriptor; furthermore, logging is done via xentoollog. There are three new parameters to xc_interface_open to control the logging, but existing callers can just pass "0" for all three to get the old behaviour. All libxc callers have been adjusted accordingly. Also update QEMU_TAG for corresponding qemu change. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/******************************************************************************
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*
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* xc_mem_event.c
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*
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* Interface to low-level memory event functionality.
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*
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* Copyright (c) 2009 Citrix Systems, Inc. (Patrick Colp)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "xc_private.h"
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int xc_mem_event_control(xc_interface *xch, domid_t domain_id, unsigned int op,
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unsigned int mode, void *shared_page,
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void *ring_page, unsigned long gfn)
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{
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DECLARE_DOMCTL;
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domctl.cmd = XEN_DOMCTL_mem_event_op;
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domctl.domain = domain_id;
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domctl.u.mem_event_op.op = op;
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domctl.u.mem_event_op.mode = mode;
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domctl.u.mem_event_op.shared_addr = (unsigned long)shared_page;
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domctl.u.mem_event_op.ring_addr = (unsigned long)ring_page;
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domctl.u.mem_event_op.gfn = gfn;
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return do_domctl(xch, &domctl);
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}
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int xc_mem_event_enable(xc_interface *xch, domid_t domain_id,
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void *shared_page, void *ring_page)
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{
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return xc_mem_event_control(xch, domain_id,
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XEN_DOMCTL_MEM_EVENT_OP_ENABLE, 0,
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shared_page, ring_page, INVALID_MFN);
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}
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int xc_mem_event_disable(xc_interface *xch, domid_t domain_id)
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{
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return xc_mem_event_control(xch, domain_id,
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XEN_DOMCTL_MEM_EVENT_OP_DISABLE, 0,
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NULL, NULL, INVALID_MFN);
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}
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