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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-07 08:15:05 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-07 08:15:05 +0400 |
| commit | 403299a8515c56db58454c57712f4dc96d6c1fde (patch) | |
| tree | 1dbcb33c606b03adc7d7fe128ecb3f0c3404ffef /arch/x86/xen/time.c | |
| parent | daedd8708fe7707ed651bb1c83162f25c48a947c (diff) | |
| parent | fdb9eb9f155bfc0f8dc2fc88f90448b30c78ad97 (diff) | |
| download | linux-403299a8515c56db58454c57712f4dc96d6c1fde.tar.xz | |
Merge branch 'upstream/xen-settime' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
* 'upstream/xen-settime' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
xen/dom0: set wallclock time in Xen
xen: add dom0_op hypercall
xen/acpi: Domain0 acpi parser related platform hypercall
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 163b4679556e..0296a9522501 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -201,8 +201,22 @@ 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 = { |