From e6985a3e17033af5caab33840e1ca21a824a940d Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 2 Aug 2012 13:38:49 +0200 Subject: [PATCH] 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 --- arch/powerpc/kvm/e500_tlb.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index ff38b664195d..b56b6e14df6c 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -1039,8 +1039,12 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr, 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: { -- 2.39.5