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
  ...

4 files changed, 24 insertions, 37 deletions

diff --git a/arch/ia64/kvm/Kconfig b/arch/ia64/kvm/Kconfig
index 2cd225f8c68d..990b86420cc6 100644
--- a/arch/ia64/kvm/Kconfig
+++ b/arch/ia64/kvm/Kconfig
@@ -21,12 +21,11 @@ config KVM
 	tristate "Kernel-based Virtual Machine (KVM) support"
 	depends on BROKEN
 	depends on HAVE_KVM && MODULES
-	# for device assignment:
-	depends on PCI
 	depends on BROKEN
 	select PREEMPT_NOTIFIERS
 	select ANON_INODES
 	select HAVE_KVM_IRQCHIP
+	select HAVE_KVM_IRQ_ROUTING
 	select KVM_APIC_ARCHITECTURE
 	select KVM_MMIO
 	---help---
@@ -50,6 +49,17 @@ config KVM_INTEL
 	  Provides support for KVM on Itanium 2 processors equipped with the VT
 	  extensions.
 
+config KVM_DEVICE_ASSIGNMENT
+	bool "KVM legacy PCI device assignment support"
+	depends on KVM && PCI && IOMMU_API
+	default y
+	---help---
+	  Provide support for legacy PCI device assignment through KVM.  The
+	  kernel now also supports a full featured userspace device driver
+	  framework through VFIO, which supersedes much of this support.
+
+	  If unsure, say Y.
+
 source drivers/vhost/Kconfig
 
 endif # VIRTUALIZATION
diff --git a/arch/ia64/kvm/Makefile b/arch/ia64/kvm/Makefile
index db3d7c5d1071..1a4053789d01 100644
--- a/arch/ia64/kvm/Makefile
+++ b/arch/ia64/kvm/Makefile
@@ -49,10 +49,10 @@ ccflags-y := -Ivirt/kvm -Iarch/ia64/kvm/
 asflags-y := -Ivirt/kvm -Iarch/ia64/kvm/
 
 common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
-		coalesced_mmio.o irq_comm.o assigned-dev.o)
+		coalesced_mmio.o irq_comm.o)
 
-ifeq ($(CONFIG_IOMMU_API),y)
-common-objs += $(addprefix ../../../virt/kvm/, iommu.o)
+ifeq ($(CONFIG_KVM_DEVICE_ASSIGNMENT),y)
+common-objs += $(addprefix ../../../virt/kvm/, assigned-dev.o iommu.o)
 endif
 
 kvm-objs := $(common-objs) kvm-ia64.o kvm_fw.o
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index ad3126a58644..5b2dc0d10c8f 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -204,9 +204,11 @@ int kvm_dev_ioctl_check_extension(long ext)
 	case KVM_CAP_COALESCED_MMIO:
 		r = KVM_COALESCED_MMIO_PAGE_OFFSET;
 		break;
+#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
 	case KVM_CAP_IOMMU:
 		r = iommu_present(&pci_bus_type);
 		break;
+#endif
 	default:
 		r = 0;
 	}
@@ -924,13 +926,15 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
 	return 0;
 }
 
-int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event)
+int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
+		bool line_status)
 {
 	if (!irqchip_in_kernel(kvm))
 		return -ENXIO;
 
 	irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
-					irq_event->irq, irq_event->level);
+					irq_event->irq, irq_event->level,
+					line_status);
 	return 0;
 }
 
@@ -942,24 +946,6 @@ long kvm_arch_vm_ioctl(struct file *filp,
 	int r = -ENOTTY;
 
 	switch (ioctl) {
-	case KVM_SET_MEMORY_REGION: {
-		struct kvm_memory_region kvm_mem;
-		struct kvm_userspace_memory_region kvm_userspace_mem;
-
-		r = -EFAULT;
-		if (copy_from_user(&kvm_mem, argp, sizeof kvm_mem))
-			goto out;
-		kvm_userspace_mem.slot = kvm_mem.slot;
-		kvm_userspace_mem.flags = kvm_mem.flags;
-		kvm_userspace_mem.guest_phys_addr =
-					kvm_mem.guest_phys_addr;
-		kvm_userspace_mem.memory_size = kvm_mem.memory_size;
-		r = kvm_vm_ioctl_set_memory_region(kvm,
-					&kvm_userspace_mem, false);
-		if (r)
-			goto out;
-		break;
-		}
 	case KVM_CREATE_IRQCHIP:
 		r = -EFAULT;
 		r = kvm_ioapic_init(kvm);
@@ -1384,9 +1370,7 @@ void kvm_arch_sync_events(struct kvm *kvm)
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
 	kvm_iommu_unmap_guest(kvm);
-#ifdef  KVM_CAP_DEVICE_ASSIGNMENT
 	kvm_free_all_assigned_devices(kvm);
-#endif
 	kfree(kvm->arch.vioapic);
 	kvm_release_vm_pages(kvm);
 }
@@ -1578,9 +1562,8 @@ int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
 
 int kvm_arch_prepare_memory_region(struct kvm *kvm,
 		struct kvm_memory_slot *memslot,
-		struct kvm_memory_slot old,
 		struct kvm_userspace_memory_region *mem,
-		bool user_alloc)
+		enum kvm_mr_change change)
 {
 	unsigned long i;
 	unsigned long pfn;
@@ -1610,8 +1593,8 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
 
 void kvm_arch_commit_memory_region(struct kvm *kvm,
 		struct kvm_userspace_memory_region *mem,
-		struct kvm_memory_slot old,
-		bool user_alloc)
+		const struct kvm_memory_slot *old,
+		enum kvm_mr_change change)
 {
 	return;
 }
diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h
index c3e2935b6db4..c5f92a926a9a 100644
--- a/arch/ia64/kvm/lapic.h
+++ b/arch/ia64/kvm/lapic.h
@@ -27,10 +27,4 @@ int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq);
 #define kvm_apic_present(x) (true)
 #define kvm_lapic_enabled(x) (true)
 
-static inline bool kvm_apic_vid_enabled(void)
-{
-	/* IA64 has no apicv supporting, do nothing here */
-	return false;
-}
-
 #endif