KVM: use proper hrtimer function to retrieve expiration time

hrtimer->base can be temporarily NULL due to racing hrtimer_start.
See switch_hrtimer_base/lock_hrtimer_base.

Use hrtimer_get_remaining which is robust against it.

CC: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 82ad523b4901..144e7f60b5e2 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -116,7 +116,7 @@ static s64 __kpit_elapsed(struct kvm *kvm)
          * itself with the initial count and continues counting
          * from there.
          */
-        remaining = hrtimer_expires_remaining(&ps->pit_timer.timer);
+        remaining = hrtimer_get_remaining(&ps->pit_timer.timer);
         elapsed = ps->pit_timer.period - ktime_to_ns(remaining);
         elapsed = mod_64(elapsed, ps->pit_timer.period);