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    Subject[PATCH 3/3] xen/dom0: set wallclock time in Xen
    Date
    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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