Messages in this thread Patch in this message | | | From | Jeremy Fitzhardinge <> | Subject | [PATCH 3/3] xen/dom0: set wallclock time in Xen | Date | Mon, 26 Sep 2011 11:27:25 -0700 |
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From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> --- arch/x86/xen/time.c | 16 +++++++++++++++- 1 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index 5158c50..8c9cdfa 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -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 = { -- 1.7.6.2
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