On Fri, Sep 25, 2009 at 11:09:37AM +0200, Aurelien Jarno wrote: > Don't overflow when computing the 64-bit period from 32-bit registers. > > Fixes sourceforge bug #2826486. > > Signed-off-by: Aurelien Jarno <[email protected]> > --- > arch/x86/kvm/lapic.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c > index 9c8f901..3ca7767 100644 > --- a/arch/x86/kvm/lapic.c > +++ b/arch/x86/kvm/lapic.c > @@ -658,7 +658,7 @@ static void start_apic_timer(struct kvm_lapic *apic) > { > ktime_t now = apic->lapic_timer.timer.base->get_time(); > > - apic->lapic_timer.period = apic_get_reg(apic, APIC_TMICT) * > + apic->lapic_timer.period = (u64)apic_get_reg(apic, APIC_TMICT) * > APIC_BUS_CYCLE_NS * apic->divide_count; > atomic_set(&apic->lapic_timer.pending, 0);
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