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xen/dom0: set wallclock time in Xen
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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1 changed files with 15 additions and 1 deletions
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@ -200,8 +200,22 @@ static unsigned long xen_get_wallclock(void)
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static int xen_set_wallclock(unsigned long now)
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{
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struct xen_platform_op op;
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int rc;
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/* do nothing for domU */
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return -1;
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if (!xen_initial_domain())
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return -1;
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op.cmd = XENPF_settime;
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op.u.settime.secs = now;
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op.u.settime.nsecs = 0;
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op.u.settime.system_time = xen_clocksource_read();
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rc = HYPERVISOR_dom0_op(&op);
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WARN(rc != 0, "XENPF_settime failed: now=%ld\n", now);
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return rc;
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}
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static struct clocksource xen_clocksource __read_mostly = {
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