From: Aurelien Jarno <aurel...@aurel32.net> Don't overflow when computing the 64-bit period from 32-bit registers.
Fixes sourceforge bug #2826486. Signed-off-by: Aurelien Jarno <aurel...@aurel32.net> Cc: sta...@kernel.org Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com> 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); -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html