Hi Boris,
On 1/14/19 2:54 PM, Boris Ostrovsky wrote:
On 1/14/19 7:44 AM, Juergen Gross wrote:
Commit f94c8d11699759 ("sched/clock, x86/tsc: Rework the x86 'unstable' sched_clock() interface") broke Xen guest time handling across migration:
[ 187.249951] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 187.251137] OOM killer disabled. [ 187.251137] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 187.252299] suspending xenstore... [ 187.266987] xen:grant_table: Grant tables using version 1 layout [18446743811.706476] OOM killer enabled. [18446743811.706478] Restarting tasks ... done. [18446743811.720505] Setting capacity to 16777216
Fix that by setting xen_sched_clock_offset at resume time to ensure a monotonic clock value.
Fixes: f94c8d11699759 ("sched/clock, x86/tsc: Rework the x86 'unstable' sched_clock() interface") Cc: stable@vger.kernel.org # 4.11 Reported-by: Hans van Kranenburg hans@knorrie.org Signed-off-by: Juergen Gross jgross@suse.com
Reviewed-by: Boris Ostrovsky boris.ostrovsky@oracle.com
Can you please change the address to my work email?
Reported-by: Hans van Kranenburg hans.van.kranenburg@mendix.com
Also (see other email):
Tested-by: Hans van Kranenburg hans.van.kranenburg@mendix.com
Thanks, Hans