KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()
Roel Kluin [Sun, 9 May 2010 15:26:47 +0000 (17:26 +0200)]
An index of KVM44x_GUEST_TLB_SIZE is already one too large.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Hollis Blanchard <hollis@penguinppc.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

arch/powerpc/kvm/44x_tlb.c

index 2570fcc..8123125 100644 (file)
@@ -440,7 +440,7 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
        unsigned int gtlb_index;
 
        gtlb_index = kvmppc_get_gpr(vcpu, ra);
-       if (gtlb_index > KVM44x_GUEST_TLB_SIZE) {
+       if (gtlb_index >= KVM44x_GUEST_TLB_SIZE) {
                printk("%s: index %d\n", __func__, gtlb_index);
                kvmppc_dump_vcpu(vcpu);
                return EMULATE_FAIL;