Eric Lee / smarc-ti-linux-kernel

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Commit f79e5ec9d587278f5d23c86ac17d83c92a48e50b

Authored by David Hildenbrand
Committed by Greg Kroah-Hartman
1 parent 66c3bfca4b

KVM: s390: base hrtimer on a monotonic clock 

commit 0ac96caf0f9381088c673a16d910b1d329670edf upstream.

The hrtimer that handles the wait with enabled timer interrupts
should not be disturbed by changes of the host time.

This patch changes our hrtimer to be based on a monotonic clock.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

arch/s390/kvm/kvm-s390.c
Diff comments   View file @ f79e5ec
... ... @@ -670,7 +670,7 @@
670 670 if (rc)
671 671 return rc;
672 672 }
673   - hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
  673 + hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
674 674 vcpu->arch.ckc_timer.function = kvm_s390_idle_wakeup;
675 675 get_cpu_id(&vcpu->arch.cpu_id);
676 676 vcpu->arch.cpu_id.version = 0xff;