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xen/dom0: set wallclock time in Xen

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Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge 2010-03-26 11:21:22 -07:00
parent eec07a9ecf
commit fdb9eb9f15
1 changed files with 15 additions and 1 deletions
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16
arch/x86/xen/time.c
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@ -200,8 +200,22 @@ static unsigned long xen_get_wallclock(void)
static int xen_set_wallclock(unsigned long now)
{
struct xen_platform_op op;
int rc;
/* do nothing for domU */
return -1;
if (!xen_initial_domain())
return -1;
op.cmd = XENPF_settime;
op.u.settime.secs = now;
op.u.settime.nsecs = 0;
op.u.settime.system_time = xen_clocksource_read();
rc = HYPERVISOR_dom0_op(&op);
WARN(rc != 0, "XENPF_settime failed: now=%ld\n", now);
return rc;
}
static struct clocksource xen_clocksource __read_mostly = {