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 <aurelien@xxxxxxxxxxx>
> ---
> 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);
Applied, thanks.
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