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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2013-10-11 21:39:25 -0300 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-11-06 09:48:43 +0200 |
| commit | d63285e94af3ade4fa8b10b0d9a22bcf72baf2f9 (patch) | |
| tree | ea3eba620830c9eb954875e1153fc2e453b9464c /arch/x86/kernel/kvmclock.c | |
| parent | 01b71917b55d28c09ade9fb8c683cf0d2aad1858 (diff) | |
| download | linux-d63285e94af3ade4fa8b10b0d9a22bcf72baf2f9.tar.bz2 | |
pvclock: detect watchdog reset at pvclock read
Implement reset of kernel watchdogs at pvclock read time. This avoids
adding special code to every watchdog.
This is possible for watchdogs which measure time based on sched_clock() or
ktime_get() variants.
Suggested by Don Zickus.
Acked-by: Don Zickus <dzickus@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch/x86/kernel/kvmclock.c')
| -rw-r--r-- | arch/x86/kernel/kvmclock.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index 1570e0741344..e6041094ff26 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -139,6 +139,7 @@ bool kvm_check_and_clear_guest_paused(void) src = &hv_clock[cpu].pvti; if ((src->flags & PVCLOCK_GUEST_STOPPED) != 0) { src->flags &= ~PVCLOCK_GUEST_STOPPED; + pvclock_touch_watchdogs(); ret = true; } |