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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-03-26 19:21:22 +0100 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2011-09-26 20:04:39 +0200 |
| commit | fdb9eb9f155bfc0f8dc2fc88f90448b30c78ad97 (patch) | |
| tree | a15dbe3b58afcbe3b0b947e8aa9bf272597380f1 /arch/x86/xen/time.c | |
| parent | xen: add dom0_op hypercall (diff) | |
| download | linux-fdb9eb9f155bfc0f8dc2fc88f90448b30c78ad97.tar.xz linux-fdb9eb9f155bfc0f8dc2fc88f90448b30c78ad97.zip | |
xen/dom0: set wallclock time in Xen
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'arch/x86/xen/time.c')
| -rw-r--r-- | 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 5158c505bef9..8c9cdfa24657 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 = { |