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[PATCH 18/19] timers: Don't migrate timers during suspend
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- Date: Fri, 7 Oct 2022 10:32:51 +0000
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- Cc: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Fri, 07 Oct 2022 10:33:20 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHY2jgmyMa3fIhJ3kaXCccflKz0UA==
- Thread-topic: [PATCH 18/19] timers: Don't migrate timers during suspend
Migrating timers during suspend causes Dom0 to freeze after resume.
Signed-off-by: Mykyta Poturai <mykyta_poturai@xxxxxxxx>
---
xen/common/timer.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/xen/common/timer.c b/xen/common/timer.c
index 1bb265ceea..52d4f72a76 100644
--- a/xen/common/timer.c
+++ b/xen/common/timer.c
@@ -658,7 +658,8 @@ static int cpu_callback(
case CPU_UP_CANCELED:
case CPU_DEAD:
case CPU_RESUME_FAILED:
- migrate_timers_from_cpu(cpu);
+ if ( system_state != SYS_STATE_suspend )
+ migrate_timers_from_cpu(cpu);
if ( !park_offline_cpus && system_state != SYS_STATE_suspend )
free_percpu_timers(cpu);
--
2.37.1
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