Merge tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Gleb Natapov:
 "Highlights of the updates are:

  general:
   - new emulated device API
   - legacy device assignment is now optional
   - irqfd interface is more generic and can be shared between arches

  x86:
   - VMCS shadow support and other nested VMX improvements
   - APIC virtualization and Posted Interrupt hardware support
   - Optimize mmio spte zapping

  ppc:
    - BookE: in-kernel MPIC emulation with irqfd support
    - Book3S: in-kernel XICS emulation (incomplete)
    - Book3S: HV: migration fixes
    - BookE: more debug support preparation
    - BookE: e6500 support

  ARM:
   - reworking of Hyp idmaps

  s390:
   - ioeventfd for virtio-ccw

  And many other bug fixes, cleanups and improvements"

* tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits)
  kvm: Add compat_ioctl for device control API
  KVM: x86: Account for failing enable_irq_window for NMI window request
  KVM: PPC: Book3S: Add API for in-kernel XICS emulation
  kvm/ppc/mpic: fix missing unlock in set_base_addr()
  kvm/ppc: Hold srcu lock when calling kvm_io_bus_read/write
  kvm/ppc/mpic: remove users
  kvm/ppc/mpic: fix mmio region lists when multiple guests used
  kvm/ppc/mpic: remove default routes from documentation
  kvm: KVM_CAP_IOMMU only available with device assignment
  ARM: KVM: iterate over all CPUs for CPU compatibility check
  KVM: ARM: Fix spelling in error message
  ARM: KVM: define KVM_ARM_MAX_VCPUS unconditionally
  KVM: ARM: Fix API documentation for ONE_REG encoding
  ARM: KVM: promote vfp_host pointer to generic host cpu context
  ARM: KVM: add architecture specific hook for capabilities
  ARM: KVM: perform HYP initilization for hotplugged CPUs
  ARM: KVM: switch to a dual-step HYP init code
  ARM: KVM: rework HYP page table freeing
  ARM: KVM: enforce maximum size for identity mapped code
  ARM: KVM: move to a KVM provided HYP idmap
  ...

1 files changed, 16 insertions, 199 deletions

diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index e9073cf4d040..e2e6b4473a96 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -35,7 +35,8 @@
 #include "ioapic.h"
 
 static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e,
-                           struct kvm *kvm, int irq_source_id, int level)
+                           struct kvm *kvm, int irq_source_id, int level,
+                           bool line_status)
 {
 #ifdef CONFIG_X86
         struct kvm_pic *pic = pic_irqchip(kvm);
@@ -46,10 +47,12 @@ static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e,
 }
 
 static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e,
-                              struct kvm *kvm, int irq_source_id, int level)
+                              struct kvm *kvm, int irq_source_id, int level,
+                              bool line_status)
 {
         struct kvm_ioapic *ioapic = kvm->arch.vioapic;
-        return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, irq_source_id, level);
+        return kvm_ioapic_set_irq(ioapic, e->irqchip.pin, irq_source_id, level,
+                                line_status);
 }
 
 inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq)
@@ -63,7 +66,7 @@ inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq)
 }
 
 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
-                struct kvm_lapic_irq *irq)
+                struct kvm_lapic_irq *irq, unsigned long *dest_map)
 {
         int i, r = -1;
         struct kvm_vcpu *vcpu, *lowest = NULL;
@@ -74,7 +77,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
                 irq->delivery_mode = APIC_DM_FIXED;
         }
 
-        if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r))
+        if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r, dest_map))
                 return r;
 
         kvm_for_each_vcpu(i, vcpu, kvm) {
@@ -88,7 +91,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
                 if (!kvm_is_dm_lowest_prio(irq)) {
                         if (r < 0)
                                 r = 0;
-                        r += kvm_apic_set_irq(vcpu, irq);
+                        r += kvm_apic_set_irq(vcpu, irq, dest_map);
                 } else if (kvm_lapic_enabled(vcpu)) {
                         if (!lowest)
                                 lowest = vcpu;
@@ -98,7 +101,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
         }
 
         if (lowest)
-                r = kvm_apic_set_irq(lowest, irq);
+                r = kvm_apic_set_irq(lowest, irq, dest_map);
 
         return r;
 }
@@ -121,7 +124,7 @@ static inline void kvm_set_msi_irq(struct kvm_kernel_irq_routing_entry *e,
 }
 
 int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
-                struct kvm *kvm, int irq_source_id, int level)
+                struct kvm *kvm, int irq_source_id, int level, bool line_status)
 {
         struct kvm_lapic_irq irq;
 
@@ -130,7 +133,7 @@ int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
 
         kvm_set_msi_irq(e, &irq);
 
-        return kvm_irq_delivery_to_apic(kvm, NULL, &irq);
+        return kvm_irq_delivery_to_apic(kvm, NULL, &irq, NULL);
 }
 
 
@@ -142,63 +145,12 @@ static int kvm_set_msi_inatomic(struct kvm_kernel_irq_routing_entry *e,
 
         kvm_set_msi_irq(e, &irq);
 
-        if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r))
+        if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
                 return r;
         else
                 return -EWOULDBLOCK;
 }
 
-int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi)
-{
-        struct kvm_kernel_irq_routing_entry route;
-
-        if (!irqchip_in_kernel(kvm) || msi->flags != 0)
-                return -EINVAL;
-
-        route.msi.address_lo = msi->address_lo;
-        route.msi.address_hi = msi->address_hi;
-        route.msi.data = msi->data;
-
-        return kvm_set_msi(&route, kvm, KVM_USERSPACE_IRQ_SOURCE_ID, 1);
-}
-
-/*
- * Return value:
- *  < 0   Interrupt was ignored (masked or not delivered for other reasons)
- *  = 0   Interrupt was coalesced (previous irq is still pending)
- *  > 0   Number of CPUs interrupt was delivered to
- */
-int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level)
-{
-        struct kvm_kernel_irq_routing_entry *e, irq_set[KVM_NR_IRQCHIPS];
-        int ret = -1, i = 0;
-        struct kvm_irq_routing_table *irq_rt;
-
-        trace_kvm_set_irq(irq, level, irq_source_id);
-
-        /* Not possible to detect if the guest uses the PIC or the
-         * IOAPIC.  So set the bit in both. The guest will ignore
-         * writes to the unused one.
-         */
-        rcu_read_lock();
-        irq_rt = rcu_dereference(kvm->irq_routing);
-        if (irq < irq_rt->nr_rt_entries)
-                hlist_for_each_entry(e, &irq_rt->map[irq], link)
-                        irq_set[i++] = *e;
-        rcu_read_unlock();
-
-        while(i--) {
-                int r;
-                r = irq_set[i].set(&irq_set[i], kvm, irq_source_id, level);
-                if (r < 0)
-                        continue;
-
-                ret = r + ((ret < 0) ? 0 : ret);
-        }
-
-        return ret;
-}
-
 /*
  * Deliver an IRQ in an atomic context if we can, or return a failure,
  * user can retry in a process context.
@@ -236,63 +188,6 @@ int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level)
         return ret;
 }
 
-bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)
-{
-        struct kvm_irq_ack_notifier *kian;
-        int gsi;
-
-        rcu_read_lock();
-        gsi = rcu_dereference(kvm->irq_routing)->chip[irqchip][pin];
-        if (gsi != -1)
-                hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
-                                         link)
-                        if (kian->gsi == gsi) {
-                                rcu_read_unlock();
-                                return true;
-                        }
-
-        rcu_read_unlock();
-
-        return false;
-}
-EXPORT_SYMBOL_GPL(kvm_irq_has_notifier);
-
-void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
-{
-        struct kvm_irq_ack_notifier *kian;
-        int gsi;
-
-        trace_kvm_ack_irq(irqchip, pin);
-
-        rcu_read_lock();
-        gsi = rcu_dereference(kvm->irq_routing)->chip[irqchip][pin];
-        if (gsi != -1)
-                hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
-                                         link)
-                        if (kian->gsi == gsi)
-                                kian->irq_acked(kian);
-        rcu_read_unlock();
-}
-
-void kvm_register_irq_ack_notifier(struct kvm *kvm,
-                                   struct kvm_irq_ack_notifier *kian)
-{
-        mutex_lock(&kvm->irq_lock);
-        hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);
-        mutex_unlock(&kvm->irq_lock);
-        kvm_ioapic_make_eoibitmap_request(kvm);
-}
-
-void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
-                                    struct kvm_irq_ack_notifier *kian)
-{
-        mutex_lock(&kvm->irq_lock);
-        hlist_del_init_rcu(&kian->link);
-        mutex_unlock(&kvm->irq_lock);
-        synchronize_rcu();
-        kvm_ioapic_make_eoibitmap_request(kvm);
-}
-
 int kvm_request_irq_source_id(struct kvm *kvm)
 {
         unsigned long *bitmap = &kvm->arch.irq_sources_bitmap;
@@ -376,34 +271,14 @@ void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
         rcu_read_unlock();
 }
 
-void kvm_free_irq_routing(struct kvm *kvm)
-{
-        /* Called only during vm destruction. Nobody can use the pointer
-           at this stage */
-        kfree(kvm->irq_routing);
-}
-
-static int setup_routing_entry(struct kvm_irq_routing_table *rt,
-                               struct kvm_kernel_irq_routing_entry *e,
-                               const struct kvm_irq_routing_entry *ue)
+int kvm_set_routing_entry(struct kvm_irq_routing_table *rt,
+                          struct kvm_kernel_irq_routing_entry *e,
+                          const struct kvm_irq_routing_entry *ue)
 {
         int r = -EINVAL;
         int delta;
         unsigned max_pin;
-        struct kvm_kernel_irq_routing_entry *ei;
 
-        /*
-         * Do not allow GSI to be mapped to the same irqchip more than once.
-         * Allow only one to one mapping between GSI and MSI.
-         */
-        hlist_for_each_entry(ei, &rt->map[ue->gsi], link)
-                if (ei->type == KVM_IRQ_ROUTING_MSI ||
-                    ue->type == KVM_IRQ_ROUTING_MSI ||
-                    ue->u.irqchip.irqchip == ei->irqchip.irqchip)
-                        return r;
-
-        e->gsi = ue->gsi;
-        e->type = ue->type;
         switch (ue->type) {
         case KVM_IRQ_ROUTING_IRQCHIP:
                 delta = 0;
@@ -440,69 +315,11 @@ static int setup_routing_entry(struct kvm_irq_routing_table *rt,
                 goto out;
         }
 
-        hlist_add_head(&e->link, &rt->map[e->gsi]);
         r = 0;
 out:
         return r;
 }
 
-
-int kvm_set_irq_routing(struct kvm *kvm,
-                        const struct kvm_irq_routing_entry *ue,
-                        unsigned nr,
-                        unsigned flags)
-{
-        struct kvm_irq_routing_table *new, *old;
-        u32 i, j, nr_rt_entries = 0;
-        int r;
-
-        for (i = 0; i < nr; ++i) {
-                if (ue[i].gsi >= KVM_MAX_IRQ_ROUTES)
-                        return -EINVAL;
-                nr_rt_entries = max(nr_rt_entries, ue[i].gsi);
-        }
-
-        nr_rt_entries += 1;
-
-        new = kzalloc(sizeof(*new) + (nr_rt_entries * sizeof(struct hlist_head))
-                      + (nr * sizeof(struct kvm_kernel_irq_routing_entry)),
-                      GFP_KERNEL);
-
-        if (!new)
-                return -ENOMEM;
-
-        new->rt_entries = (void *)&new->map[nr_rt_entries];
-
-        new->nr_rt_entries = nr_rt_entries;
-        for (i = 0; i < 3; i++)
-                for (j = 0; j < KVM_IOAPIC_NUM_PINS; j++)
-                        new->chip[i][j] = -1;
-
-        for (i = 0; i < nr; ++i) {
-                r = -EINVAL;
-                if (ue->flags)
-                        goto out;
-                r = setup_routing_entry(new, &new->rt_entries[i], ue);
-                if (r)
-                        goto out;
-                ++ue;
-        }
-
-        mutex_lock(&kvm->irq_lock);
-        old = kvm->irq_routing;
-        kvm_irq_routing_update(kvm, new);
-        mutex_unlock(&kvm->irq_lock);
-
-        synchronize_rcu();
-
-        new = old;
-        r = 0;
-
-out:
-        kfree(new);
-        return r;
-}
-
 #define IOAPIC_ROUTING_ENTRY(irq) \
         { .gsi = irq, .type = KVM_IRQ_ROUTING_IRQCHIP,  \
           .u.irqchip.irqchip = KVM_IRQCHIP_IOAPIC, .u.irqchip.pin = (irq) }