Pull pvops into release branch
[sfrench/cifs-2.6.git] / arch / ia64 / kvm / kvm-ia64.c
index 0344c66644853aa25064dcb53b68bd516ea981fa..28af6a731bb8a26361a60650263a3c943ff7bb9f 100644 (file)
@@ -182,7 +182,7 @@ int kvm_dev_ioctl_check_extension(long ext)
        switch (ext) {
        case KVM_CAP_IRQCHIP:
        case KVM_CAP_MP_STATE:
-
+       case KVM_CAP_IRQ_INJECT_STATUS:
                r = 1;
                break;
        case KVM_CAP_COALESCED_MMIO:
@@ -314,7 +314,7 @@ static struct kvm_vcpu *lid_to_vcpu(struct kvm *kvm, unsigned long id,
        union ia64_lid lid;
        int i;
 
-       for (i = 0; i < KVM_MAX_VCPUS; i++) {
+       for (i = 0; i < kvm->arch.online_vcpus; i++) {
                if (kvm->vcpus[i]) {
                        lid.val = VCPU_LID(kvm->vcpus[i]);
                        if (lid.id == id && lid.eid == eid)
@@ -388,7 +388,7 @@ static int handle_global_purge(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 
        call_data.ptc_g_data = p->u.ptc_g_data;
 
-       for (i = 0; i < KVM_MAX_VCPUS; i++) {
+       for (i = 0; i < kvm->arch.online_vcpus; i++) {
                if (!kvm->vcpus[i] || kvm->vcpus[i]->arch.mp_state ==
                                                KVM_MP_STATE_UNINITIALIZED ||
                                        vcpu == kvm->vcpus[i])
@@ -788,6 +788,8 @@ struct  kvm *kvm_arch_create_vm(void)
                return ERR_PTR(-ENOMEM);
        kvm_init_vm(kvm);
 
+       kvm->arch.online_vcpus = 0;
+
        return kvm;
 
 }
@@ -919,7 +921,13 @@ long kvm_arch_vm_ioctl(struct file *filp,
                r = kvm_ioapic_init(kvm);
                if (r)
                        goto out;
+               r = kvm_setup_default_irq_routing(kvm);
+               if (r) {
+                       kfree(kvm->arch.vioapic);
+                       goto out;
+               }
                break;
+       case KVM_IRQ_LINE_STATUS:
        case KVM_IRQ_LINE: {
                struct kvm_irq_level irq_event;
 
@@ -927,10 +935,17 @@ long kvm_arch_vm_ioctl(struct file *filp,
                if (copy_from_user(&irq_event, argp, sizeof irq_event))
                        goto out;
                if (irqchip_in_kernel(kvm)) {
+                       __s32 status;
                        mutex_lock(&kvm->lock);
-                       kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
+                       status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
                                    irq_event.irq, irq_event.level);
                        mutex_unlock(&kvm->lock);
+                       if (ioctl == KVM_IRQ_LINE_STATUS) {
+                               irq_event.status = status;
+                               if (copy_to_user(argp, &irq_event,
+                                                       sizeof irq_event))
+                                       goto out;
+                       }
                        r = 0;
                }
                break;
@@ -1149,7 +1164,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
 
                /*Initialize itc offset for vcpus*/
                itc_offset = 0UL - ia64_getreg(_IA64_REG_AR_ITC);
-               for (i = 0; i < KVM_MAX_VCPUS; i++) {
+               for (i = 0; i < kvm->arch.online_vcpus; i++) {
                        v = (struct kvm_vcpu *)((char *)vcpu +
                                        sizeof(struct kvm_vcpu_data) * i);
                        v->arch.itc_offset = itc_offset;
@@ -1283,6 +1298,8 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
                goto fail;
        }
 
+       kvm->arch.online_vcpus++;
+
        return vcpu;
 fail:
        return ERR_PTR(r);
@@ -1303,8 +1320,8 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
        return -EINVAL;
 }
 
-int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
-               struct kvm_debug_guest *dbg)
+int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
+                                       struct kvm_guest_debug *dbg)
 {
        return -EINVAL;
 }
@@ -1421,6 +1438,23 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
        return 0;
 }
 
+int kvm_arch_vcpu_ioctl_get_stack(struct kvm_vcpu *vcpu,
+                                 struct kvm_ia64_vcpu_stack *stack)
+{
+       memcpy(stack, vcpu, sizeof(struct kvm_ia64_vcpu_stack));
+       return 0;
+}
+
+int kvm_arch_vcpu_ioctl_set_stack(struct kvm_vcpu *vcpu,
+                                 struct kvm_ia64_vcpu_stack *stack)
+{
+       memcpy(vcpu + 1, &stack->stack[0] + sizeof(struct kvm_vcpu),
+              sizeof(struct kvm_ia64_vcpu_stack) - sizeof(struct kvm_vcpu));
+
+       vcpu->arch.exit_data = ((struct kvm_vcpu *)stack)->arch.exit_data;
+       return 0;
+}
+
 void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
 {
 
@@ -1430,9 +1464,78 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
 
 
 long kvm_arch_vcpu_ioctl(struct file *filp,
-               unsigned int ioctl, unsigned long arg)
+                        unsigned int ioctl, unsigned long arg)
 {
-       return -EINVAL;
+       struct kvm_vcpu *vcpu = filp->private_data;
+       void __user *argp = (void __user *)arg;
+       struct kvm_ia64_vcpu_stack *stack = NULL;
+       long r;
+
+       switch (ioctl) {
+       case KVM_IA64_VCPU_GET_STACK: {
+               struct kvm_ia64_vcpu_stack __user *user_stack;
+               void __user *first_p = argp;
+
+               r = -EFAULT;
+               if (copy_from_user(&user_stack, first_p, sizeof(void *)))
+                       goto out;
+
+               if (!access_ok(VERIFY_WRITE, user_stack,
+                              sizeof(struct kvm_ia64_vcpu_stack))) {
+                       printk(KERN_INFO "KVM_IA64_VCPU_GET_STACK: "
+                              "Illegal user destination address for stack\n");
+                       goto out;
+               }
+               stack = kzalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
+               if (!stack) {
+                       r = -ENOMEM;
+                       goto out;
+               }
+
+               r = kvm_arch_vcpu_ioctl_get_stack(vcpu, stack);
+               if (r)
+                       goto out;
+
+               if (copy_to_user(user_stack, stack,
+                                sizeof(struct kvm_ia64_vcpu_stack)))
+                       goto out;
+
+               break;
+       }
+       case KVM_IA64_VCPU_SET_STACK: {
+               struct kvm_ia64_vcpu_stack __user *user_stack;
+               void __user *first_p = argp;
+
+               r = -EFAULT;
+               if (copy_from_user(&user_stack, first_p, sizeof(void *)))
+                       goto out;
+
+               if (!access_ok(VERIFY_READ, user_stack,
+                           sizeof(struct kvm_ia64_vcpu_stack))) {
+                       printk(KERN_INFO "KVM_IA64_VCPU_SET_STACK: "
+                              "Illegal user address for stack\n");
+                       goto out;
+               }
+               stack = kmalloc(sizeof(struct kvm_ia64_vcpu_stack), GFP_KERNEL);
+               if (!stack) {
+                       r = -ENOMEM;
+                       goto out;
+               }
+               if (copy_from_user(stack, user_stack,
+                                  sizeof(struct kvm_ia64_vcpu_stack)))
+                       goto out;
+
+               r = kvm_arch_vcpu_ioctl_set_stack(vcpu, stack);
+               break;
+       }
+
+       default:
+               r = -EINVAL;
+       }
+
+out:
+       kfree(stack);
+       return r;
 }
 
 int kvm_arch_set_memory_region(struct kvm *kvm,
@@ -1472,7 +1575,7 @@ void kvm_arch_flush_shadow(struct kvm *kvm)
 }
 
 long kvm_arch_dev_ioctl(struct file *filp,
-               unsigned int ioctl, unsigned long arg)
+                       unsigned int ioctl, unsigned long arg)
 {
        return -EINVAL;
 }
@@ -1737,7 +1840,7 @@ struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
        struct kvm_vcpu *lvcpu = kvm->vcpus[0];
        int i;
 
-       for (i = 1; i < KVM_MAX_VCPUS; i++) {
+       for (i = 1; i < kvm->arch.online_vcpus; i++) {
                if (!kvm->vcpus[i])
                        continue;
                if (lvcpu->arch.xtp > kvm->vcpus[i]->arch.xtp)