From ace1546487a0fe4634e3251067f8a32cb2cdc099 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Thu, 8 Oct 2009 10:55:03 -0300 Subject: [PATCH] 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 Signed-off-by: Avi Kivity --- arch/x86/kvm/i8254.c | 2 +- arch/x86/kvm/lapic.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 82ad523..144e7f6 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); diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 7024224..23c2176 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -521,7 +521,7 @@ static u32 apic_get_tmcct(struct kvm_lapic *apic) if (apic_get_reg(apic, APIC_TMICT) == 0) return 0; - remaining = hrtimer_expires_remaining(&apic->lapic_timer.timer); + remaining = hrtimer_get_remaining(&apic->lapic_timer.timer); if (ktime_to_ns(remaining) < 0) remaining = ktime_set(0, 0); -- 2.7.4