4 files changed, 28 insertions, 2 deletions

diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c
index 5dd3ab469976..ed0385448148 100644
--- a/arch/powerpc/kvm/44x_tlb.c
+++ b/arch/powerpc/kvm/44x_tlb.c
@@ -441,6 +441,7 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
 	struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu);
 	struct kvmppc_44x_tlbe *tlbe;
 	unsigned int gtlb_index;
+	int idx;
 
 	gtlb_index = kvmppc_get_gpr(vcpu, ra);
 	if (gtlb_index >= KVM44x_GUEST_TLB_SIZE) {
@@ -473,6 +474,8 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
 		return EMULATE_FAIL;
 	}
 
+	idx = srcu_read_lock(&vcpu->kvm->srcu);
+
 	if (tlbe_is_host_safe(vcpu, tlbe)) {
 		gva_t eaddr;
 		gpa_t gpaddr;
@@ -489,6 +492,8 @@ int kvmppc_44x_emul_tlbwe(struct kvm_vcpu *vcpu, u8 ra, u8 rs, u8 ws)
 		kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
 	}
 
+	srcu_read_unlock(&vcpu->kvm->srcu, idx);
+
 	trace_kvm_gtlb_write(gtlb_index, tlbe->tid, tlbe->word0, tlbe->word1,
 			     tlbe->word2);
 
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 1020119226db..5cd7ad0c1176 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -832,6 +832,18 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 {
 	int r = RESUME_HOST;
 	int s;
+	int idx;
+
+#ifdef CONFIG_PPC64
+	WARN_ON(local_paca->irq_happened != 0);
+#endif
+
+	/*
+	 * We enter with interrupts disabled in hardware, but
+	 * we need to call hard_irq_disable anyway to ensure that
+	 * the software state is kept in sync.
+	 */
+	hard_irq_disable();
 
 	/* update before a new last_exit_type is rewritten */
 	kvmppc_update_timing_stats(vcpu);
@@ -1053,6 +1065,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 			break;
 		}
 
+		idx = srcu_read_lock(&vcpu->kvm->srcu);
+
 		gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
 		gfn = gpaddr >> PAGE_SHIFT;
 
@@ -1075,6 +1089,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 			kvmppc_account_exit(vcpu, MMIO_EXITS);
 		}
 
+		srcu_read_unlock(&vcpu->kvm->srcu, idx);
 		break;
 	}
 
@@ -1098,6 +1113,8 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 
 		kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
 
+		idx = srcu_read_lock(&vcpu->kvm->srcu);
+
 		gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
 		gfn = gpaddr >> PAGE_SHIFT;
 
@@ -1114,6 +1131,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
 			kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
 		}
 
+		srcu_read_unlock(&vcpu->kvm->srcu, idx);
 		break;
 	}
 
diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c
index c41a5a96b558..6d6f153b6c1d 100644
--- a/arch/powerpc/kvm/e500_mmu.c
+++ b/arch/powerpc/kvm/e500_mmu.c
@@ -396,6 +396,7 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
 	struct kvm_book3e_206_tlb_entry *gtlbe;
 	int tlbsel, esel;
 	int recal = 0;
+	int idx;
 
 	tlbsel = get_tlb_tlbsel(vcpu);
 	esel = get_tlb_esel(vcpu, tlbsel);
@@ -430,6 +431,8 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
 			kvmppc_set_tlb1map_range(vcpu, gtlbe);
 	}
 
+	idx = srcu_read_lock(&vcpu->kvm->srcu);
+
 	/* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */
 	if (tlbe_is_host_safe(vcpu, gtlbe)) {
 		u64 eaddr = get_tlb_eaddr(gtlbe);
@@ -444,6 +447,8 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
 		kvmppc_mmu_map(vcpu, eaddr, raddr, index_of(tlbsel, esel));
 	}
 
+	srcu_read_unlock(&vcpu->kvm->srcu, idx);
+
 	kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS);
 	return EMULATE_DONE;
 }
diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c
index 753cc99eff2b..19c8379575f7 100644
--- a/arch/powerpc/kvm/e500mc.c
+++ b/arch/powerpc/kvm/e500mc.c
@@ -177,8 +177,6 @@ int kvmppc_core_check_processor_compat(void)
 		r = 0;
 	else if (strcmp(cur_cpu_spec->cpu_name, "e5500") == 0)
 		r = 0;
-	else if (strcmp(cur_cpu_spec->cpu_name, "e6500") == 0)
-		r = 0;
 	else
 		r = -ENOTSUPP;