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/******************************************************************************
* arch/x86/mm/mem_access.c
*
* Memory access support.
*
* Copyright (c) 2011 Virtuata, Inc.
*
* 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 <asm/p2m.h>
#include <asm/mem_event.h>
int mem_access_memop(struct domain *d, xen_mem_event_op_t *meo)
{
int rc;
if ( unlikely(!d->mem_event->access.ring_page) )
return -ENODEV;
switch( meo->op )
{
case XENMEM_access_op_resume:
{
p2m_mem_access_resume(d);
rc = 0;
}
break;
default:
rc = -ENOSYS;
break;
}
return rc;
}
int mem_access_send_req(struct domain *d, mem_event_request_t *req)
{
int rc = mem_event_claim_slot(d, &d->mem_event->access);
if ( rc < 0 )
return rc;
mem_event_put_request(d, &d->mem_event->access, req);
return 0;
}
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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