KVM: PPC: E500: Fix clear_tlb_refs
Our mapping code assumes that TLB0 entries are always mapped. However, after
calling clear_tlb_refs() this is no longer the case.
Map them dynamically if we find an entry unmapped in TLB0.
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c
index ff38b66..b56b6e1 100644
--- a/arch/powerpc/kvm/e500_tlb.c
+++ b/arch/powerpc/kvm/e500_tlb.c
@@ -1039,8 +1039,12 @@
sesel = 0; /* unused */
priv = &vcpu_e500->gtlb_priv[tlbsel][esel];
- kvmppc_e500_setup_stlbe(vcpu, gtlbe, BOOK3E_PAGESZ_4K,
- &priv->ref, eaddr, &stlbe);
+ /* Only triggers after clear_tlb_refs */
+ if (unlikely(!(priv->ref.flags & E500_TLB_VALID)))
+ kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
+ else
+ kvmppc_e500_setup_stlbe(vcpu, gtlbe, BOOK3E_PAGESZ_4K,
+ &priv->ref, eaddr, &stlbe);
break;
case 1: {