1 files changed, 75 insertions, 81 deletions

diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index c254c27..dd03f6b 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -72,6 +72,17 @@ void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
 {
 }
 
+void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
+{
+	if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
+		ulong pc = kvmppc_get_pc(vcpu);
+		if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
+			kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
+		vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
+	}
+}
+EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
+
 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
 {
 	if (!is_kvmppc_hv_enabled(vcpu->kvm))
@@ -118,6 +129,7 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
 
 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
 {
+	kvmppc_unfixup_split_real(vcpu);
 	kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
 	kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
 	kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
@@ -218,6 +230,23 @@ void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
 	kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
 }
 
+void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
+				    ulong flags)
+{
+	kvmppc_set_dar(vcpu, dar);
+	kvmppc_set_dsisr(vcpu, flags);
+	kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
+}
+
+void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
+{
+	u64 msr = kvmppc_get_msr(vcpu);
+	msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
+	msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
+	kvmppc_set_msr_fast(vcpu, msr);
+	kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
+}
+
 int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
 {
 	int deliver = 1;
@@ -342,18 +371,18 @@ int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
 }
 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
 
-pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing,
+pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
 			bool *writable)
 {
-	ulong mp_pa = vcpu->arch.magic_page_pa;
+	ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
+	gfn_t gfn = gpa >> PAGE_SHIFT;
 
 	if (!(kvmppc_get_msr(vcpu) & MSR_SF))
 		mp_pa = (uint32_t)mp_pa;
 
 	/* Magic page override */
-	if (unlikely(mp_pa) &&
-	    unlikely(((gfn << PAGE_SHIFT) & KVM_PAM) ==
-		     ((mp_pa & PAGE_MASK) & KVM_PAM))) {
+	gpa &= ~0xFFFULL;
+	if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
 		ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
 		pfn_t pfn;
 
@@ -366,11 +395,13 @@ pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing,
 
 	return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
 }
-EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn);
+EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
 
-static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
-			bool iswrite, struct kvmppc_pte *pte)
+int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
+		 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
 {
+	bool data = (xlid == XLATE_DATA);
+	bool iswrite = (xlrw == XLATE_WRITE);
 	int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
 	int r;
 
@@ -384,88 +415,34 @@ static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
 		pte->may_write = true;
 		pte->may_execute = true;
 		r = 0;
+
+		if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
+		    !data) {
+			if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
+			    ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
+			pte->raddr &= ~SPLIT_HACK_MASK;
+		}
 	}
 
 	return r;
 }
 
-static hva_t kvmppc_bad_hva(void)
-{
-	return PAGE_OFFSET;
-}
-
-static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
-			       bool read)
-{
-	hva_t hpage;
-
-	if (read && !pte->may_read)
-		goto err;
-
-	if (!read && !pte->may_write)
-		goto err;
-
-	hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
-	if (kvm_is_error_hva(hpage))
-		goto err;
-
-	return hpage | (pte->raddr & ~PAGE_MASK);
-err:
-	return kvmppc_bad_hva();
-}
-
-int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
-	      bool data)
-{
-	struct kvmppc_pte pte;
-
-	vcpu->stat.st++;
-
-	if (kvmppc_xlate(vcpu, *eaddr, data, true, &pte))
-		return -ENOENT;
-
-	*eaddr = pte.raddr;
-
-	if (!pte.may_write)
-		return -EPERM;
-
-	if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
-		return EMULATE_DO_MMIO;
-
-	return EMULATE_DONE;
-}
-EXPORT_SYMBOL_GPL(kvmppc_st);
-
-int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
-		      bool data)
+int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
+					 u32 *inst)
 {
-	struct kvmppc_pte pte;
-	hva_t hva = *eaddr;
-
-	vcpu->stat.ld++;
-
-	if (kvmppc_xlate(vcpu, *eaddr, data, false, &pte))
-		goto nopte;
-
-	*eaddr = pte.raddr;
-
-	hva = kvmppc_pte_to_hva(vcpu, &pte, true);
-	if (kvm_is_error_hva(hva))
-		goto mmio;
-
-	if (copy_from_user(ptr, (void __user *)hva, size)) {
-		printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva);
-		goto mmio;
-	}
+	ulong pc = kvmppc_get_pc(vcpu);
+	int r;
 
-	return EMULATE_DONE;
+	if (type == INST_SC)
+		pc -= 4;
 
-nopte:
-	return -ENOENT;
-mmio:
-	return EMULATE_DO_MMIO;
+	r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
+	if (r == EMULATE_DONE)
+		return r;
+	else
+		return EMULATE_AGAIN;
 }
-EXPORT_SYMBOL_GPL(kvmppc_ld);
+EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
 
 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 {
@@ -646,6 +623,12 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 		case KVM_REG_PPC_BESCR:
 			val = get_reg_val(reg->id, vcpu->arch.bescr);
 			break;
+		case KVM_REG_PPC_VTB:
+			val = get_reg_val(reg->id, vcpu->arch.vtb);
+			break;
+		case KVM_REG_PPC_IC:
+			val = get_reg_val(reg->id, vcpu->arch.ic);
+			break;
 		default:
 			r = -EINVAL;
 			break;
@@ -750,6 +733,12 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 		case KVM_REG_PPC_BESCR:
 			vcpu->arch.bescr = set_reg_val(reg->id, val);
 			break;
+		case KVM_REG_PPC_VTB:
+			vcpu->arch.vtb = set_reg_val(reg->id, val);
+			break;
+		case KVM_REG_PPC_IC:
+			vcpu->arch.ic = set_reg_val(reg->id, val);
+			break;
 		default:
 			r = -EINVAL;
 			break;
@@ -913,6 +902,11 @@ int kvmppc_core_check_processor_compat(void)
 	return 0;
 }
 
+int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
+{
+	return kvm->arch.kvm_ops->hcall_implemented(hcall);
+}
+
 static int kvmppc_book3s_init(void)
 {
 	int r;