Re: [PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-31 Thread John Stultz
On 05/31/2013 02:49 AM, David Vrabel wrote: On 31/05/13 01:30, John Stultz wrote: On 05/30/2013 07:25 AM, David Vrabel wrote: From: David Vrabel Currently the Xen wallclock is only updated every 11 minutes if NTP is synchronized to its clock source. If a guest is started before NTP is

Re: [PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-31 Thread David Vrabel
On 31/05/13 01:30, John Stultz wrote: > On 05/30/2013 07:25 AM, David Vrabel wrote: >> From: David Vrabel >> >> Currently the Xen wallclock is only updated every 11 minutes if NTP is >> synchronized to its clock source. If a guest is started before NTP is >> synchronized it may see an incorrect

Re: [PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-31 Thread David Vrabel
On 31/05/13 01:30, John Stultz wrote: On 05/30/2013 07:25 AM, David Vrabel wrote: From: David Vrabel david.vra...@citrix.com Currently the Xen wallclock is only updated every 11 minutes if NTP is synchronized to its clock source. If a guest is started before NTP is synchronized it may see

Re: [PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-31 Thread John Stultz
On 05/31/2013 02:49 AM, David Vrabel wrote: On 31/05/13 01:30, John Stultz wrote: On 05/30/2013 07:25 AM, David Vrabel wrote: From: David Vrabel david.vra...@citrix.com Currently the Xen wallclock is only updated every 11 minutes if NTP is synchronized to its clock source. If a guest is

Re: [PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-30 Thread John Stultz
On 05/30/2013 07:25 AM, David Vrabel wrote: From: David Vrabel Currently the Xen wallclock is only updated every 11 minutes if NTP is synchronized to its clock source. If a guest is started before NTP is synchronized it may see an incorrect wallclock time. Ok.. So this is maybe starting to

[PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-30 Thread David Vrabel
From: David Vrabel Currently the Xen wallclock is only updated every 11 minutes if NTP is synchronized to its clock source. If a guest is started before NTP is synchronized it may see an incorrect wallclock time. Use the pvclock_gtod notifier chain to receive a notification when the system

[PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-30 Thread David Vrabel
From: David Vrabel david.vra...@citrix.com Currently the Xen wallclock is only updated every 11 minutes if NTP is synchronized to its clock source. If a guest is started before NTP is synchronized it may see an incorrect wallclock time. Use the pvclock_gtod notifier chain to receive a

Re: [PATCH 1/2] x86/xen: sync the wallclock when the system time changes

2013-05-30 Thread John Stultz
On 05/30/2013 07:25 AM, David Vrabel wrote: From: David Vrabel david.vra...@citrix.com Currently the Xen wallclock is only updated every 11 minutes if NTP is synchronized to its clock source. If a guest is started before NTP is synchronized it may see an incorrect wallclock time. Ok.. So