From: Liu Yu Date: Tue, 17 Mar 2009 08:57:45 +0000 (+0800) Subject: KVM: ppc: e500: Fix the bug that mas0 update to wrong value when read TLB entry X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=bc35cbc85cd78213590761618a13da6a9707652c;p=deliverable%2Flinux.git KVM: ppc: e500: Fix the bug that mas0 update to wrong value when read TLB entry Should clear and then update the next victim area here. Guest kernel only read TLB1 when startup kernel, this bug result in an extra 4K TLB1 mapping in guest from 0x0 to 0x0. As the problem has no impact to bootup a guest, we didn't notice it before. Signed-off-by: Liu Yu Signed-off-by: Avi Kivity --- diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index 72386ddbd9d5..ec933209e8af 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -448,7 +448,7 @@ int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu) esel = get_tlb_esel(vcpu_e500, tlbsel); gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel]; - vcpu_e500->mas0 &= MAS0_NV(0); + vcpu_e500->mas0 &= ~MAS0_NV(~0); vcpu_e500->mas0 |= MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]); vcpu_e500->mas1 = gtlbe->mas1; vcpu_e500->mas2 = gtlbe->mas2;