[Vivid][PATCH 0/2] Fixes for LP: #1427075
Chris J Arges
chris.j.arges at canonical.com
Tue Mar 31 20:28:42 UTC 2015
BugLink: http://bugs.launchpad.net/bugs/1427075
I've build tested this on ppc64el.
[Impact]
Stop/continue via qemu monitor can easily trigger soft-lockups due to incorrect
VM timekeeping.
[Test Case]
On a single CPU KVM guest:
yes > /dev/null &
Followed by
(qemu) stop
Wait a while, then:
(qemu) cont
[Fix]
The following commits upstream:
commit 545a2bf742fb41f17d03486dd8a8c74ad511dec2
commit 4be1b29795d692d512bb67b770665d6f8ea5cb0b
Cyril Bur (2):
kernel/sched/clock.c: add another clock for use with the soft lockup
watchdog
powerpc: add running_clock for powerpc to prevent spurious softlockup
warnings
arch/powerpc/kernel/time.c | 32 ++++++++++++++++++++++++++++++++
include/linux/sched.h | 1 +
kernel/sched/clock.c | 13 +++++++++++++
kernel/watchdog.c | 2 +-
4 files changed, 47 insertions(+), 1 deletion(-)
--
1.9.1
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