KVM: PPC: Check max IRQ prio

We have a define on what the highest bit of IRQ priorities is. So we can
just as well use it in the bit checking code and avoid invalid IRQ values
to be triggered.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 61ae0faf0d24b266beddd95febe20d650619a9b4..ec0a6512ab09fe4f1237b15017b215e282b4f972 100644 (file)
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -337,7 +337,7 @@ void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
                printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
 #endif
        priority = __ffs(*pending);
-       while (priority <= (sizeof(unsigned int) * 8)) {
+       while (priority < BOOK3S_IRQPRIO_MAX) {
                if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
                    (priority != BOOK3S_IRQPRIO_DECREMENTER)) {
                        /* DEC interrupts get cleared by mtdec */