From: Roel Kluin <roel.kluin@gmail.com>
Date: Sun, 9 May 2010 15:26:47 +0000 (+0200)
Subject: KVM: PPC: Keep index within boundaries in kvmppc_44x_emul_tlbwe()
X-Git-Tag: v2.6.34~19^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4f018c513a81ba243165bfc4fcf44254986ad002;p=platform%2Fkernel%2Flinux-stable.git

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 2570fcc..8123125 100644
--- 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;