diff options
Diffstat (limited to 'kernel/watchdog.c')
| -rw-r--r-- | kernel/watchdog.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/watchdog.c b/kernel/watchdog.c index df30ee08bdd4..e5e1d85b8c7c 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -24,6 +24,7 @@ #include <linux/sysctl.h> #include <asm/irq_regs.h> +#include <linux/kvm_para.h> #include <linux/perf_event.h> int watchdog_enabled = 1; @@ -280,6 +281,9 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer) __this_cpu_write(softlockup_touch_sync, false); sched_clock_tick(); } + + /* Clear the guest paused flag on watchdog reset */ + kvm_check_and_clear_guest_paused(); __touch_watchdog(); return HRTIMER_RESTART; } @@ -292,6 +296,14 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer) */ duration = is_softlockup(touch_ts); if (unlikely(duration)) { + /* + * If a virtual machine is stopped by the host it can look to + * the watchdog like a soft lockup, check to see if the host + * stopped the vm before we issue the warning + */ + if (kvm_check_and_clear_guest_paused()) + return HRTIMER_RESTART; + /* only warn once */ if (__this_cpu_read(soft_watchdog_warn) == true) return HRTIMER_RESTART; |