* KVM: PIT: fix kpit_elapsed division by zero
@ 2009-07-02 23:02 Marcelo Tosatti
2009-07-06 7:44 ` Avi Kivity
0 siblings, 1 reply; 2+ messages in thread
From: Marcelo Tosatti @ 2009-07-02 23:02 UTC (permalink / raw)
To: kvm
Fix division by zero triggered by latch count command on uninitialized
counter.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 14bbaae..8c3ac30 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -104,6 +104,9 @@ static s64 __kpit_elapsed(struct kvm *kvm)
ktime_t remaining;
struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;
+ if (!ps->pit_timer.period)
+ return 0;
+
/*
* The Counter does not stop when it reaches zero. In
* Modes 0, 1, 4, and 5 the Counter ``wraps around'' to
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: KVM: PIT: fix kpit_elapsed division by zero
2009-07-02 23:02 KVM: PIT: fix kpit_elapsed division by zero Marcelo Tosatti
@ 2009-07-06 7:44 ` Avi Kivity
0 siblings, 0 replies; 2+ messages in thread
From: Avi Kivity @ 2009-07-06 7:44 UTC (permalink / raw)
To: Marcelo Tosatti; +Cc: kvm
On 07/03/2009 02:02 AM, Marcelo Tosatti wrote:
> Fix division by zero triggered by latch count command on uninitialized
> counter.
>
Applied, thanks.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 2+ messages in thread
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