Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 113 insertions, 35 deletions

diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 607fbdf24b8..00d7e345b3f 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -39,7 +39,8 @@
 int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
 {
 	return !(v->arch.shared->msr & MSR_WE) ||
-	       !!(v->arch.pending_exceptions);
+	       !!(v->arch.pending_exceptions) ||
+	       v->requests;
 }
 
 int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
@@ -66,7 +67,7 @@ int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
 		vcpu->arch.magic_page_pa = param1;
 		vcpu->arch.magic_page_ea = param2;
 
-		r2 = KVM_MAGIC_FEAT_SR;
+		r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
 
 		r = HC_EV_SUCCESS;
 		break;
@@ -171,8 +172,11 @@ void kvm_arch_check_processor_compat(void *rtn)
 	*(int *)rtn = kvmppc_core_check_processor_compat();
 }
 
-int kvm_arch_init_vm(struct kvm *kvm)
+int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 {
+	if (type)
+		return -EINVAL;
+
 	return kvmppc_core_init_vm(kvm);
 }
 
@@ -208,17 +212,22 @@ int kvm_dev_ioctl_check_extension(long ext)
 	case KVM_CAP_PPC_BOOKE_SREGS:
 #else
 	case KVM_CAP_PPC_SEGSTATE:
+	case KVM_CAP_PPC_HIOR:
 	case KVM_CAP_PPC_PAPR:
 #endif
 	case KVM_CAP_PPC_UNSET_IRQ:
 	case KVM_CAP_PPC_IRQ_LEVEL:
 	case KVM_CAP_ENABLE_CAP:
+	case KVM_CAP_ONE_REG:
 		r = 1;
 		break;
 #ifndef CONFIG_KVM_BOOK3S_64_HV
 	case KVM_CAP_PPC_PAIRED_SINGLES:
 	case KVM_CAP_PPC_OSI:
 	case KVM_CAP_PPC_GET_PVINFO:
+#ifdef CONFIG_KVM_E500
+	case KVM_CAP_SW_TLB:
+#endif
 		r = 1;
 		break;
 	case KVM_CAP_COALESCED_MMIO:
@@ -238,7 +247,26 @@ int kvm_dev_ioctl_check_extension(long ext)
 		if (cpu_has_feature(CPU_FTR_ARCH_201))
 			r = 2;
 		break;
+	case KVM_CAP_SYNC_MMU:
+		r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
+		break;
 #endif
+	case KVM_CAP_NR_VCPUS:
+		/*
+		 * Recommending a number of CPUs is somewhat arbitrary; we
+		 * return the number of present CPUs for -HV (since a host
+		 * will have secondary threads "offline"), and for other KVM
+		 * implementations just count online CPUs.
+		 */
+#ifdef CONFIG_KVM_BOOK3S_64_HV
+		r = num_present_cpus();
+#else
+		r = num_online_cpus();
+#endif
+		break;
+	case KVM_CAP_MAX_VCPUS:
+		r = KVM_MAX_VCPUS;
+		break;
 	default:
 		r = 0;
 		break;
@@ -253,6 +281,16 @@ long kvm_arch_dev_ioctl(struct file *filp,
 	return -EINVAL;
 }
 
+void kvm_arch_free_memslot(struct kvm_memory_slot *free,
+			   struct kvm_memory_slot *dont)
+{
+}
+
+int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
+{
+	return 0;
+}
+
 int kvm_arch_prepare_memory_region(struct kvm *kvm,
                                    struct kvm_memory_slot *memslot,
                                    struct kvm_memory_slot old,
@@ -279,9 +317,10 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
 {
 	struct kvm_vcpu *vcpu;
 	vcpu = kvmppc_core_vcpu_create(kvm, id);
-	vcpu->arch.wqp = &vcpu->wq;
-	if (!IS_ERR(vcpu))
+	if (!IS_ERR(vcpu)) {
+		vcpu->arch.wqp = &vcpu->wq;
 		kvmppc_create_vcpu_debugfs(vcpu, id);
+	}
 	return vcpu;
 }
 
@@ -305,18 +344,6 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
 	return kvmppc_core_pending_dec(vcpu);
 }
 
-static void kvmppc_decrementer_func(unsigned long data)
-{
-	struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
-
-	kvmppc_core_queue_dec(vcpu);
-
-	if (waitqueue_active(vcpu->arch.wqp)) {
-		wake_up_interruptible(vcpu->arch.wqp);
-		vcpu->stat.halt_wakeup++;
-	}
-}
-
 /*
  * low level hrtimer wake routine. Because this runs in hardirq context
  * we schedule a tasklet to do the real work.
@@ -431,20 +458,20 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
 
 	kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
 
-	switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) {
-	case KVM_REG_GPR:
+	switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
+	case KVM_MMIO_REG_GPR:
 		kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
 		break;
-	case KVM_REG_FPR:
-		vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
+	case KVM_MMIO_REG_FPR:
+		vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
 		break;
 #ifdef CONFIG_PPC_BOOK3S
-	case KVM_REG_QPR:
-		vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
+	case KVM_MMIO_REG_QPR:
+		vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
 		break;
-	case KVM_REG_FQPR:
-		vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
-		vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
+	case KVM_MMIO_REG_FQPR:
+		vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
+		vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
 		break;
 #endif
 	default:
@@ -553,8 +580,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
 		vcpu->arch.hcall_needed = 0;
 	}
 
-	kvmppc_core_deliver_interrupts(vcpu);
-
 	r = kvmppc_vcpu_run(run, vcpu);
 
 	if (vcpu->sigset_active)
@@ -563,6 +588,21 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
 	return r;
 }
 
+void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
+{
+	int me;
+	int cpu = vcpu->cpu;
+
+	me = get_cpu();
+	if (waitqueue_active(vcpu->arch.wqp)) {
+		wake_up_interruptible(vcpu->arch.wqp);
+		vcpu->stat.halt_wakeup++;
+	} else if (cpu != me && cpu != -1) {
+		smp_send_reschedule(vcpu->cpu);
+	}
+	put_cpu();
+}
+
 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
 {
 	if (irq->irq == KVM_INTERRUPT_UNSET) {
@@ -571,13 +611,7 @@ int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
 	}
 
 	kvmppc_core_queue_external(vcpu, irq);
-
-	if (waitqueue_active(vcpu->arch.wqp)) {
-		wake_up_interruptible(vcpu->arch.wqp);
-		vcpu->stat.halt_wakeup++;
-	} else if (vcpu->cpu != -1) {
-		smp_send_reschedule(vcpu->cpu);
-	}
+	kvm_vcpu_kick(vcpu);
 
 	return 0;
 }
@@ -599,6 +633,19 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
 		r = 0;
 		vcpu->arch.papr_enabled = true;
 		break;
+#ifdef CONFIG_KVM_E500
+	case KVM_CAP_SW_TLB: {
+		struct kvm_config_tlb cfg;
+		void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
+
+		r = -EFAULT;
+		if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
+			break;
+
+		r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
+		break;
+	}
+#endif
 	default:
 		r = -EINVAL;
 		break;
@@ -648,6 +695,32 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
 		r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
 		break;
 	}
+
+	case KVM_SET_ONE_REG:
+	case KVM_GET_ONE_REG:
+	{
+		struct kvm_one_reg reg;
+		r = -EFAULT;
+		if (copy_from_user(&reg, argp, sizeof(reg)))
+			goto out;
+		if (ioctl == KVM_SET_ONE_REG)
+			r = kvm_vcpu_ioctl_set_one_reg(vcpu, &reg);
+		else
+			r = kvm_vcpu_ioctl_get_one_reg(vcpu, &reg);
+		break;
+	}
+
+#ifdef CONFIG_KVM_E500
+	case KVM_DIRTY_TLB: {
+		struct kvm_dirty_tlb dirty;
+		r = -EFAULT;
+		if (copy_from_user(&dirty, argp, sizeof(dirty)))
+			goto out;
+		r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
+		break;
+	}
+#endif
+
 	default:
 		r = -EINVAL;
 	}
@@ -656,6 +729,11 @@ out:
 	return r;
 }
 
+int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
+{
+	return VM_FAULT_SIGBUS;
+}
+
 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
 {
 	u32 inst_lis = 0x3c000000;