KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()

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>

diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c
index 2570fcc7665ddd9376f2db851371efef80fa2045..812312542e50cd9b42d73df0b02168d5a678ac7e 100644 (file)
--- a/arch/powerpc/kvm/44x_tlb.c
+++ b/arch/powerpc/kvm/44x_tlb.c
@@ -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;