[linux-2.6-block.git] / include / linux / kvm_host.h

#ifndef __KVM_HOST_H
#define __KVM_HOST_H

/*
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 */

#include <linux/types.h>
#include <linux/hardirq.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/preempt.h>
#include <linux/msi.h>
#include <asm/signal.h>

#include <linux/kvm.h>
#include <linux/kvm_para.h>

#include <linux/kvm_types.h>

#include <asm/kvm_host.h>

/*
 * vcpu->requests bit members
 */
#define KVM_REQ_TLB_FLUSH          0
#define KVM_REQ_MIGRATE_TIMER      1
#define KVM_REQ_REPORT_TPR_ACCESS  2
#define KVM_REQ_MMU_RELOAD         3
#define KVM_REQ_TRIPLE_FAULT       4
#define KVM_REQ_PENDING_TIMER      5
#define KVM_REQ_UNHALT             6
#define KVM_REQ_MMU_SYNC           7
#define KVM_REQ_KVMCLOCK_UPDATE    8
#define KVM_REQ_KICK               9

#define KVM_USERSPACE_IRQ_SOURCE_ID	0

struct kvm;
struct kvm_vcpu;
extern struct kmem_cache *kvm_vcpu_cache;

/*
 * It would be nice to use something smarter than a linear search, TBD...
 * Thankfully we dont expect many devices to register (famous last words :),
 * so until then it will suffice.  At least its abstracted so we can change
 * in one place.
 */
struct kvm_io_bus {
	int                   dev_count;
#define NR_IOBUS_DEVS 6
	struct kvm_io_device *devs[NR_IOBUS_DEVS];
};

void kvm_io_bus_init(struct kvm_io_bus *bus);
void kvm_io_bus_destroy(struct kvm_io_bus *bus);
int kvm_io_bus_write(struct kvm_io_bus *bus, gpa_t addr, int len,
		     const void *val);
int kvm_io_bus_read(struct kvm_io_bus *bus, gpa_t addr, int len,
		    void *val);
int __kvm_io_bus_register_dev(struct kvm_io_bus *bus,
			       struct kvm_io_device *dev);
int kvm_io_bus_register_dev(struct kvm *kvm, struct kvm_io_bus *bus,
			    struct kvm_io_device *dev);
void __kvm_io_bus_unregister_dev(struct kvm_io_bus *bus,
				 struct kvm_io_device *dev);
void kvm_io_bus_unregister_dev(struct kvm *kvm, struct kvm_io_bus *bus,
			       struct kvm_io_device *dev);

struct kvm_vcpu {
	struct kvm *kvm;
#ifdef CONFIG_PREEMPT_NOTIFIERS
	struct preempt_notifier preempt_notifier;
#endif
	int vcpu_id;
	struct mutex mutex;
	int   cpu;
	struct kvm_run *run;
	unsigned long requests;
	unsigned long guest_debug;
	int fpu_active;
	int guest_fpu_loaded;
	wait_queue_head_t wq;
	int sigset_active;
	sigset_t sigset;
	struct kvm_vcpu_stat stat;

#ifdef CONFIG_HAS_IOMEM
	int mmio_needed;
	int mmio_read_completed;
	int mmio_is_write;
	int mmio_size;
	unsigned char mmio_data[8];
	gpa_t mmio_phys_addr;
#endif

	struct kvm_vcpu_arch arch;
};

struct kvm_memory_slot {
	gfn_t base_gfn;
	unsigned long npages;
	unsigned long flags;
	unsigned long *rmap;
	unsigned long *dirty_bitmap;
	struct {
		unsigned long rmap_pde;
		int write_count;
	} *lpage_info[KVM_NR_PAGE_SIZES - 1];
	unsigned long userspace_addr;
	int user_alloc;
};

struct kvm_kernel_irq_routing_entry {
	u32 gsi;
	u32 type;
	int (*set)(struct kvm_kernel_irq_routing_entry *e,
		   struct kvm *kvm, int irq_source_id, int level);
	union {
		struct {
			unsigned irqchip;
			unsigned pin;
		} irqchip;
		struct msi_msg msi;
	};
	struct hlist_node link;
};

struct kvm_irq_routing_table {
	struct kvm_kernel_irq_routing_entry *rt_entries;
	u32 nr_rt_entries;
	/*
	 * Array indexed by gsi. Each entry contains list of irq chips
	 * the gsi is connected to.
	 */
	struct hlist_head map[0];
};

struct kvm {
	spinlock_t mmu_lock;
	spinlock_t requests_lock;
	struct rw_semaphore slots_lock;
	struct mm_struct *mm; /* userspace tied to this vm */
	int nmemslots;
	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
					KVM_PRIVATE_MEM_SLOTS];
#ifdef CONFIG_KVM_APIC_ARCHITECTURE
	u32 bsp_vcpu_id;
	struct kvm_vcpu *bsp_vcpu;
#endif
	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
	atomic_t online_vcpus;
	struct list_head vm_list;
	struct mutex lock;
	struct kvm_io_bus mmio_bus;
	struct kvm_io_bus pio_bus;
#ifdef CONFIG_HAVE_KVM_EVENTFD
	struct {
		spinlock_t        lock;
		struct list_head  items;
	} irqfds;
	struct list_head ioeventfds;
#endif
	struct kvm_vm_stat stat;
	struct kvm_arch arch;
	atomic_t users_count;
#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
#endif

	struct mutex irq_lock;
#ifdef CONFIG_HAVE_KVM_IRQCHIP
	struct kvm_irq_routing_table *irq_routing;
	struct hlist_head mask_notifier_list;
#endif

#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	struct mmu_notifier mmu_notifier;
	unsigned long mmu_notifier_seq;
	long mmu_notifier_count;
#endif
};

/* The guest did something we don't support. */
#define pr_unimpl(vcpu, fmt, ...)					\
 do {									\
	if (printk_ratelimit())						\
		printk(KERN_ERR "kvm: %i: cpu%i " fmt,			\
		       current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
 } while (0)

#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)

static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
{
	smp_rmb();
	return kvm->vcpus[i];
}

#define kvm_for_each_vcpu(idx, vcpup, kvm) \
	for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
	     idx < atomic_read(&kvm->online_vcpus) && vcpup; \
	     vcpup = kvm_get_vcpu(kvm, ++idx))

int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);

void vcpu_load(struct kvm_vcpu *vcpu);
void vcpu_put(struct kvm_vcpu *vcpu);

int kvm_init(void *opaque, unsigned int vcpu_size,
		  struct module *module);
void kvm_exit(void);

void kvm_get_kvm(struct kvm *kvm);
void kvm_put_kvm(struct kvm *kvm);

#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);

extern struct page *bad_page;
extern pfn_t bad_pfn;

int is_error_page(struct page *page);
int is_error_pfn(pfn_t pfn);
int kvm_is_error_hva(unsigned long addr);
int kvm_set_memory_region(struct kvm *kvm,
			  struct kvm_userspace_memory_region *mem,
			  int user_alloc);
int __kvm_set_memory_region(struct kvm *kvm,
			    struct kvm_userspace_memory_region *mem,
			    int user_alloc);
int kvm_arch_set_memory_region(struct kvm *kvm,
				struct kvm_userspace_memory_region *mem,
				struct kvm_memory_slot old,
				int user_alloc);
void kvm_disable_largepages(void);
void kvm_arch_flush_shadow(struct kvm *kvm);
gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
void kvm_release_page_clean(struct page *page);
void kvm_release_page_dirty(struct page *page);
void kvm_set_page_dirty(struct page *page);
void kvm_set_page_accessed(struct page *page);

pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
void kvm_release_pfn_dirty(pfn_t);
void kvm_release_pfn_clean(pfn_t pfn);
void kvm_set_pfn_dirty(pfn_t pfn);
void kvm_set_pfn_accessed(pfn_t pfn);
void kvm_get_pfn(pfn_t pfn);

int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
			int len);
int kvm_read_guest_atomic(struct kvm *kvm, gpa_t gpa, void *data,
			  unsigned long len);
int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
			 int offset, int len);
int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
		    unsigned long len);
int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
void mark_page_dirty(struct kvm *kvm, gfn_t gfn);

void kvm_vcpu_block(struct kvm_vcpu *vcpu);
void kvm_resched(struct kvm_vcpu *vcpu);
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
void kvm_flush_remote_tlbs(struct kvm *kvm);
void kvm_reload_remote_mmus(struct kvm *kvm);

long kvm_arch_dev_ioctl(struct file *filp,
			unsigned int ioctl, unsigned long arg);
long kvm_arch_vcpu_ioctl(struct file *filp,
			 unsigned int ioctl, unsigned long arg);

int kvm_dev_ioctl_check_extension(long ext);

int kvm_get_dirty_log(struct kvm *kvm,
			struct kvm_dirty_log *log, int *is_dirty);
int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
				struct kvm_dirty_log *log);

int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
				   struct
				   kvm_userspace_memory_region *mem,
				   int user_alloc);
long kvm_arch_vm_ioctl(struct file *filp,
		       unsigned int ioctl, unsigned long arg);

int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);

int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
				    struct kvm_translation *tr);

int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
				  struct kvm_sregs *sregs);
int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
				  struct kvm_sregs *sregs);
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
				    struct kvm_mp_state *mp_state);
int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
				    struct kvm_mp_state *mp_state);
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
					struct kvm_guest_debug *dbg);
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);

int kvm_arch_init(void *opaque);
void kvm_arch_exit(void);

int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);

void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);

int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
void kvm_arch_hardware_enable(void *garbage);
void kvm_arch_hardware_disable(void *garbage);
int kvm_arch_hardware_setup(void);
void kvm_arch_hardware_unsetup(void);
void kvm_arch_check_processor_compat(void *rtn);
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);

void kvm_free_physmem(struct kvm *kvm);

struct  kvm *kvm_arch_create_vm(void);
void kvm_arch_destroy_vm(struct kvm *kvm);
void kvm_free_all_assigned_devices(struct kvm *kvm);
void kvm_arch_sync_events(struct kvm *kvm);

int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
void kvm_vcpu_kick(struct kvm_vcpu *vcpu);

int kvm_is_mmio_pfn(pfn_t pfn);

struct kvm_irq_ack_notifier {
	struct hlist_node link;
	unsigned gsi;
	void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
};

#define KVM_ASSIGNED_MSIX_PENDING		0x1
struct kvm_guest_msix_entry {
	u32 vector;
	u16 entry;
	u16 flags;
};

struct kvm_assigned_dev_kernel {
	struct kvm_irq_ack_notifier ack_notifier;
	struct work_struct interrupt_work;
	struct list_head list;
	int assigned_dev_id;
	int host_busnr;
	int host_devfn;
	unsigned int entries_nr;
	int host_irq;
	bool host_irq_disabled;
	struct msix_entry *host_msix_entries;
	int guest_irq;
	struct kvm_guest_msix_entry *guest_msix_entries;
	unsigned long irq_requested_type;
	int irq_source_id;
	int flags;
	struct pci_dev *dev;
	struct kvm *kvm;
	spinlock_t assigned_dev_lock;
};

struct kvm_irq_mask_notifier {
	void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
	int irq;
	struct hlist_node link;
};

void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
				    struct kvm_irq_mask_notifier *kimn);
void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
				      struct kvm_irq_mask_notifier *kimn);
void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);

#ifdef __KVM_HAVE_IOAPIC
void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
				   union kvm_ioapic_redirect_entry *entry,
				   unsigned long *deliver_bitmask);
#endif
int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
void kvm_register_irq_ack_notifier(struct kvm *kvm,
				   struct kvm_irq_ack_notifier *kian);
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
				   struct kvm_irq_ack_notifier *kian);
int kvm_request_irq_source_id(struct kvm *kvm);
void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);

/* For vcpu->arch.iommu_flags */
#define KVM_IOMMU_CACHE_COHERENCY	0x1

#ifdef CONFIG_IOMMU_API
int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
			unsigned long npages);
int kvm_iommu_map_guest(struct kvm *kvm);
int kvm_iommu_unmap_guest(struct kvm *kvm);
int kvm_assign_device(struct kvm *kvm,
		      struct kvm_assigned_dev_kernel *assigned_dev);
int kvm_deassign_device(struct kvm *kvm,
			struct kvm_assigned_dev_kernel *assigned_dev);
#else /* CONFIG_IOMMU_API */
static inline int kvm_iommu_map_pages(struct kvm *kvm,
				      gfn_t base_gfn,
				      unsigned long npages)
{
	return 0;
}

static inline int kvm_iommu_map_guest(struct kvm *kvm)
{
	return -ENODEV;
}

static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
{
	return 0;
}

static inline int kvm_assign_device(struct kvm *kvm,
		struct kvm_assigned_dev_kernel *assigned_dev)
{
	return 0;
}

static inline int kvm_deassign_device(struct kvm *kvm,
		struct kvm_assigned_dev_kernel *assigned_dev)
{
	return 0;
}
#endif /* CONFIG_IOMMU_API */

static inline void kvm_guest_enter(void)
{
	account_system_vtime(current);
	current->flags |= PF_VCPU;
}

static inline void kvm_guest_exit(void)
{
	account_system_vtime(current);
	current->flags &= ~PF_VCPU;
}

static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
{
	return slot - kvm->memslots;
}

static inline gpa_t gfn_to_gpa(gfn_t gfn)
{
	return (gpa_t)gfn << PAGE_SHIFT;
}

static inline hpa_t pfn_to_hpa(pfn_t pfn)
{
	return (hpa_t)pfn << PAGE_SHIFT;
}

static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
{
	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
}

enum kvm_stat_kind {
	KVM_STAT_VM,
	KVM_STAT_VCPU,
};

struct kvm_stats_debugfs_item {
	const char *name;
	int offset;
	enum kvm_stat_kind kind;
	struct dentry *dentry;
};
extern struct kvm_stats_debugfs_item debugfs_entries[];
extern struct dentry *kvm_debugfs_dir;

#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
{
	if (unlikely(vcpu->kvm->mmu_notifier_count))
		return 1;
	/*
	 * Both reads happen under the mmu_lock and both values are
	 * modified under mmu_lock, so there's no need of smb_rmb()
	 * here in between, otherwise mmu_notifier_count should be
	 * read before mmu_notifier_seq, see
	 * mmu_notifier_invalidate_range_end write side.
	 */
	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
		return 1;
	return 0;
}
#endif

#ifdef CONFIG_HAVE_KVM_IRQCHIP

#define KVM_MAX_IRQ_ROUTES 1024

int kvm_setup_default_irq_routing(struct kvm *kvm);
int kvm_set_irq_routing(struct kvm *kvm,
			const struct kvm_irq_routing_entry *entries,
			unsigned nr,
			unsigned flags);
void kvm_free_irq_routing(struct kvm *kvm);

#else

static inline void kvm_free_irq_routing(struct kvm *kvm) {}

#endif

#ifdef CONFIG_HAVE_KVM_EVENTFD

void kvm_eventfd_init(struct kvm *kvm);
int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
void kvm_irqfd_release(struct kvm *kvm);
int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);

#else

static inline void kvm_eventfd_init(struct kvm *kvm) {}
static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
{
	return -EINVAL;
}

static inline void kvm_irqfd_release(struct kvm *kvm) {}
static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
{
	return -ENOSYS;
}

#endif /* CONFIG_HAVE_KVM_EVENTFD */

#ifdef CONFIG_KVM_APIC_ARCHITECTURE
static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
{
	return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
}
#endif
#endif
Commit	Line	Data
edf88417 AK	1	#ifndef __KVM_HOST_H
edf88417 AK	2	#define __KVM_HOST_H
6aa8b732 AK	3
	4	/*
	5	* This work is licensed under the terms of the GNU GPL, version 2. See
	6	* the COPYING file in the top-level directory.
	7	*/
	8
	9	#include <linux/types.h>
e56a7a28	10	#include <linux/hardirq.h>
6aa8b732 AK	11	#include <linux/list.h>
	12	#include <linux/mutex.h>
	13	#include <linux/spinlock.h>
06ff0d37 MR	14	#include <linux/signal.h>
06ff0d37 MR	15	#include <linux/sched.h>
6aa8b732	16	#include <linux/mm.h>
15ad7146	17	#include <linux/preempt.h>
0937c48d	18	#include <linux/msi.h>
e8edc6e0	19	#include <asm/signal.h>
6aa8b732	20
6aa8b732	21	#include <linux/kvm.h>
102d8325	22	#include <linux/kvm_para.h>
6aa8b732	23
edf88417	24	#include <linux/kvm_types.h>
d77a39d9	25
edf88417	26	#include <asm/kvm_host.h>
d657a98e	27
d9e368d6 AK	28	/*
	29	* vcpu->requests bit members
	30	*/
3176bc3e	31	#define KVM_REQ_TLB_FLUSH 0
2f52d58c	32	#define KVM_REQ_MIGRATE_TIMER 1
b209749f	33	#define KVM_REQ_REPORT_TPR_ACCESS 2
2e53d63a	34	#define KVM_REQ_MMU_RELOAD 3
71c4dfaf	35	#define KVM_REQ_TRIPLE_FAULT 4
06e05645	36	#define KVM_REQ_PENDING_TIMER 5
d7690175	37	#define KVM_REQ_UNHALT 6
4731d4c7	38	#define KVM_REQ_MMU_SYNC 7
c8076604	39	#define KVM_REQ_KVMCLOCK_UPDATE 8
32f88400	40	#define KVM_REQ_KICK 9
6aa8b732	41
5550af4d SY	42	#define KVM_USERSPACE_IRQ_SOURCE_ID 0
5550af4d SY	43
6c474694	44	struct kvm;
6aa8b732	45	struct kvm_vcpu;
c16f862d	46	extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732	47
2eeb2e94 GH	48	/*
	49	* It would be nice to use something smarter than a linear search, TBD...
	50	* Thankfully we dont expect many devices to register (famous last words :),
	51	* so until then it will suffice. At least its abstracted so we can change
	52	* in one place.
	53	*/
	54	struct kvm_io_bus {
	55	int dev_count;
	56	#define NR_IOBUS_DEVS 6
	57	struct kvm_io_device *devs[NR_IOBUS_DEVS];
	58	};
	59
	60	void kvm_io_bus_init(struct kvm_io_bus *bus);
	61	void kvm_io_bus_destroy(struct kvm_io_bus *bus);
bda9020e MT	62	int kvm_io_bus_write(struct kvm_io_bus *bus, gpa_t addr, int len,
	63	const void *val);
	64	int kvm_io_bus_read(struct kvm_io_bus *bus, gpa_t addr, int len,
	65	void *val);
090b7aff GH	66	int __kvm_io_bus_register_dev(struct kvm_io_bus *bus,
	67	struct kvm_io_device *dev);
	68	int kvm_io_bus_register_dev(struct kvm kvm, struct kvm_io_bus bus,
	69	struct kvm_io_device *dev);
	70	void __kvm_io_bus_unregister_dev(struct kvm_io_bus *bus,
	71	struct kvm_io_device *dev);
	72	void kvm_io_bus_unregister_dev(struct kvm kvm, struct kvm_io_bus bus,
6c474694	73	struct kvm_io_device *dev);
2eeb2e94	74
d17fbbf7 ZX	75	struct kvm_vcpu {
d17fbbf7 ZX	76	struct kvm *kvm;
31bb117e	77	#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7	78	struct preempt_notifier preempt_notifier;
31bb117e	79	#endif
d17fbbf7 ZX	80	int vcpu_id;
	81	struct mutex mutex;
	82	int cpu;
	83	struct kvm_run *run;
d17fbbf7	84	unsigned long requests;
d0bfb940	85	unsigned long guest_debug;
d17fbbf7 ZX	86	int fpu_active;
	87	int guest_fpu_loaded;
	88	wait_queue_head_t wq;
	89	int sigset_active;
	90	sigset_t sigset;
	91	struct kvm_vcpu_stat stat;
	92
34c16eec	93	#ifdef CONFIG_HAS_IOMEM
d17fbbf7 ZX	94	int mmio_needed;
	95	int mmio_read_completed;
	96	int mmio_is_write;
	97	int mmio_size;
	98	unsigned char mmio_data[8];
6aa8b732	99	gpa_t mmio_phys_addr;
34c16eec	100	#endif
1165f5fe	101
d657a98e ZX	102	struct kvm_vcpu_arch arch;
	103	};
	104
6aa8b732 AK	105	struct kvm_memory_slot {
	106	gfn_t base_gfn;
	107	unsigned long npages;
	108	unsigned long flags;
290fc38d	109	unsigned long *rmap;
6aa8b732	110	unsigned long *dirty_bitmap;
05da4558 MT	111	struct {
	112	unsigned long rmap_pde;
	113	int write_count;
ec04b260	114	} *lpage_info[KVM_NR_PAGE_SIZES - 1];
8a7ae055	115	unsigned long userspace_addr;
80b14b5b	116	int user_alloc;
6aa8b732 AK	117	};
6aa8b732 AK	118
399ec807 AK	119	struct kvm_kernel_irq_routing_entry {
399ec807 AK	120	u32 gsi;
5116d8f6	121	u32 type;
4925663a	122	int (set)(struct kvm_kernel_irq_routing_entry e,
1a6e4a8c	123	struct kvm *kvm, int irq_source_id, int level);
399ec807 AK	124	union {
	125	struct {
	126	unsigned irqchip;
	127	unsigned pin;
	128	} irqchip;
79950e10	129	struct msi_msg msi;
399ec807	130	};
46e624b9 GN	131	struct hlist_node link;
	132	};
	133
	134	struct kvm_irq_routing_table {
	135	struct kvm_kernel_irq_routing_entry *rt_entries;
	136	u32 nr_rt_entries;
	137	/*
	138	* Array indexed by gsi. Each entry contains list of irq chips
	139	* the gsi is connected to.
	140	*/
	141	struct hlist_head map[0];
399ec807 AK	142	};
399ec807 AK	143
6aa8b732	144	struct kvm {
aaee2c94	145	spinlock_t mmu_lock;
84261923	146	spinlock_t requests_lock;
72dc67a6	147	struct rw_semaphore slots_lock;
6d4e4c4f	148	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	149	int nmemslots;
e0d62c7f IE	150	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	151	KVM_PRIVATE_MEM_SLOTS];
73880c80 GN	152	#ifdef CONFIG_KVM_APIC_ARCHITECTURE
73880c80 GN	153	u32 bsp_vcpu_id;
c5af89b6	154	struct kvm_vcpu *bsp_vcpu;
73880c80	155	#endif
fb3f0f51	156	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
73880c80	157	atomic_t online_vcpus;
133de902	158	struct list_head vm_list;
60eead79	159	struct mutex lock;
2eeb2e94	160	struct kvm_io_bus mmio_bus;
74906345	161	struct kvm_io_bus pio_bus;
721eecbf GH	162	#ifdef CONFIG_HAVE_KVM_EVENTFD
	163	struct {
	164	spinlock_t lock;
	165	struct list_head items;
	166	} irqfds;
d34e6b17	167	struct list_head ioeventfds;
721eecbf	168	#endif
ba1389b7	169	struct kvm_vm_stat stat;
d69fb81f	170	struct kvm_arch arch;
d39f13b0	171	atomic_t users_count;
5f94c174 LV	172	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	173	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	174	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	175	#endif
e930bffe	176
60eead79	177	struct mutex irq_lock;
75858a84	178	#ifdef CONFIG_HAVE_KVM_IRQCHIP
46e624b9	179	struct kvm_irq_routing_table *irq_routing;
75858a84 AK	180	struct hlist_head mask_notifier_list;
	181	#endif
	182
e930bffe AA	183	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	184	struct mmu_notifier mmu_notifier;
	185	unsigned long mmu_notifier_seq;
	186	long mmu_notifier_count;
	187	#endif
6aa8b732 AK	188	};
6aa8b732 AK	189
f0242478 RR	190	/* The guest did something we don't support. */
	191	#define pr_unimpl(vcpu, fmt, ...) \
	192	do { \
	193	if (printk_ratelimit()) \
	194	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	195	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	196	} while (0)
f0242478	197
6aa8b732 AK	198	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	199	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	200
988a2cae GN	201	static inline struct kvm_vcpu kvm_get_vcpu(struct kvm kvm, int i)
	202	{
	203	smp_rmb();
	204	return kvm->vcpus[i];
	205	}
	206
	207	#define kvm_for_each_vcpu(idx, vcpup, kvm) \
	208	for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
	209	idx < atomic_read(&kvm->online_vcpus) && vcpup; \
	210	vcpup = kvm_get_vcpu(kvm, ++idx))
	211
fb3f0f51 RR	212	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	213	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	214
313a3dc7 CO	215	void vcpu_load(struct kvm_vcpu *vcpu);
	216	void vcpu_put(struct kvm_vcpu *vcpu);
	217
f8c16bba	218	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	219	struct module *module);
cb498ea2	220	void kvm_exit(void);
6aa8b732	221
d39f13b0 IE	222	void kvm_get_kvm(struct kvm *kvm);
	223	void kvm_put_kvm(struct kvm *kvm);
	224
6aa8b732 AK	225	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	226	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	227	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	228	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	229
cea7bb21	230	extern struct page *bad_page;
35149e21	231	extern pfn_t bad_pfn;
6aa8b732	232
cea7bb21	233	int is_error_page(struct page *page);
35149e21	234	int is_error_pfn(pfn_t pfn);
f9d46eb0	235	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	236	int kvm_set_memory_region(struct kvm *kvm,
	237	struct kvm_userspace_memory_region *mem,
	238	int user_alloc);
f78e0e2e SY	239	int __kvm_set_memory_region(struct kvm *kvm,
	240	struct kvm_userspace_memory_region *mem,
	241	int user_alloc);
0de10343 ZX	242	int kvm_arch_set_memory_region(struct kvm *kvm,
	243	struct kvm_userspace_memory_region *mem,
	244	struct kvm_memory_slot old,
	245	int user_alloc);
54dee993	246	void kvm_disable_largepages(void);
34d4cb8f	247	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	248	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	249	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	250	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	251	void kvm_release_page_clean(struct page *page);
b4231d61 IE	252	void kvm_release_page_dirty(struct page *page);
35149e21 AL	253	void kvm_set_page_dirty(struct page *page);
	254	void kvm_set_page_accessed(struct page *page);
	255
	256	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	257	void kvm_release_pfn_dirty(pfn_t);
	258	void kvm_release_pfn_clean(pfn_t pfn);
	259	void kvm_set_pfn_dirty(pfn_t pfn);
	260	void kvm_set_pfn_accessed(pfn_t pfn);
	261	void kvm_get_pfn(pfn_t pfn);
	262
195aefde IE	263	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	264	int len);
7ec54588 MT	265	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	266	unsigned long len);
195aefde IE	267	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	268	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	269	int offset, int len);
	270	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	271	unsigned long len);
	272	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	273	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	274	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	275	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	276	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	277
8776e519	278	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	279	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	280	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	281	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	282	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	283	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	284
043405e1 CO	285	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	286	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	287	long kvm_arch_vcpu_ioctl(struct file *filp,
313a3dc7 CO	288	unsigned int ioctl, unsigned long arg);
018d00d2 ZX	289
	290	int kvm_dev_ioctl_check_extension(long ext);
	291
5bb064dc ZX	292	int kvm_get_dirty_log(struct kvm *kvm,
	293	struct kvm_dirty_log log, int is_dirty);
	294	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	295	struct kvm_dirty_log *log);
	296
1fe779f8 CO	297	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	298	struct
	299	kvm_userspace_memory_region *mem,
	300	int user_alloc);
	301	long kvm_arch_vm_ioctl(struct file *filp,
	302	unsigned int ioctl, unsigned long arg);
313a3dc7	303
d0752060 HB	304	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	305	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	306
8b006791 ZX	307	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	308	struct kvm_translation *tr);
	309
b6c7a5dc HB	310	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	311	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	312	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	313	struct kvm_sregs *sregs);
	314	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	315	struct kvm_sregs *sregs);
62d9f0db MT	316	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	317	struct kvm_mp_state *mp_state);
	318	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	319	struct kvm_mp_state *mp_state);
d0bfb940 JK	320	int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
d0bfb940 JK	321	struct kvm_guest_debug *dbg);
b6c7a5dc HB	322	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
b6c7a5dc HB	323
f8c16bba ZX	324	int kvm_arch_init(void *opaque);
f8c16bba ZX	325	void kvm_arch_exit(void);
043405e1	326
e9b11c17 ZX	327	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
	328	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
	329
	330	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
	331	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	332	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
	333	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id);
26e5215f	334	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62	335	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17 ZX	336
	337	int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
	338	void kvm_arch_hardware_enable(void *garbage);
	339	void kvm_arch_hardware_disable(void *garbage);
	340	int kvm_arch_hardware_setup(void);
	341	void kvm_arch_hardware_unsetup(void);
	342	void kvm_arch_check_processor_compat(void *rtn);
1d737c8a	343	int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
e9b11c17	344
d19a9cd2 ZX	345	void kvm_free_physmem(struct kvm *kvm);
	346
	347	struct kvm *kvm_arch_create_vm(void);
	348	void kvm_arch_destroy_vm(struct kvm *kvm);
8a98f664	349	void kvm_free_all_assigned_devices(struct kvm *kvm);
ad8ba2cd	350	void kvm_arch_sync_events(struct kvm *kvm);
e9b11c17	351
3d80840d	352	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	353	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	354
c77fb9dc XZ	355	int kvm_is_mmio_pfn(pfn_t pfn);
c77fb9dc XZ	356
62c476c7 BAY	357	struct kvm_irq_ack_notifier {
	358	struct hlist_node link;
	359	unsigned gsi;
	360	void (irq_acked)(struct kvm_irq_ack_notifier kian);
	361	};
	362
2350bd1f	363	#define KVM_ASSIGNED_MSIX_PENDING 0x1
c1e01514 SY	364	struct kvm_guest_msix_entry {
	365	u32 vector;
	366	u16 entry;
	367	u16 flags;
	368	};
	369
62c476c7 BAY	370	struct kvm_assigned_dev_kernel {
	371	struct kvm_irq_ack_notifier ack_notifier;
	372	struct work_struct interrupt_work;
	373	struct list_head list;
	374	int assigned_dev_id;
	375	int host_busnr;
	376	int host_devfn;
c1e01514	377	unsigned int entries_nr;
62c476c7	378	int host_irq;
defaf158	379	bool host_irq_disabled;
c1e01514	380	struct msix_entry *host_msix_entries;
62c476c7	381	int guest_irq;
c1e01514	382	struct kvm_guest_msix_entry *guest_msix_entries;
4f906c19	383	unsigned long irq_requested_type;
5550af4d	384	int irq_source_id;
b653574a	385	int flags;
62c476c7 BAY	386	struct pci_dev *dev;
62c476c7 BAY	387	struct kvm *kvm;
547de29e	388	spinlock_t assigned_dev_lock;
62c476c7	389	};
75858a84 AK	390
	391	struct kvm_irq_mask_notifier {
	392	void (func)(struct kvm_irq_mask_notifier kimn, bool masked);
	393	int irq;
	394	struct hlist_node link;
	395	};
	396
	397	void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
	398	struct kvm_irq_mask_notifier *kimn);
	399	void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
	400	struct kvm_irq_mask_notifier *kimn);
	401	void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
	402
46e624b9 GN	403	#ifdef __KVM_HAVE_IOAPIC
	404	void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
	405	union kvm_ioapic_redirect_entry *entry,
	406	unsigned long *deliver_bitmask);
	407	#endif
	408	int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level);
44882eed	409	void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
3de42dc0 XZ	410	void kvm_register_irq_ack_notifier(struct kvm *kvm,
3de42dc0 XZ	411	struct kvm_irq_ack_notifier *kian);
fa40a821 MT	412	void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
fa40a821 MT	413	struct kvm_irq_ack_notifier *kian);
5550af4d SY	414	int kvm_request_irq_source_id(struct kvm *kvm);
5550af4d SY	415	void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7	416
522c68c4 SY	417	/* For vcpu->arch.iommu_flags */
	418	#define KVM_IOMMU_CACHE_COHERENCY 0x1
	419
19de40a8	420	#ifdef CONFIG_IOMMU_API
62c476c7 BAY	421	int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
62c476c7 BAY	422	unsigned long npages);
260782bc	423	int kvm_iommu_map_guest(struct kvm *kvm);
62c476c7	424	int kvm_iommu_unmap_guest(struct kvm *kvm);
260782bc WH	425	int kvm_assign_device(struct kvm *kvm,
260782bc WH	426	struct kvm_assigned_dev_kernel *assigned_dev);
0a920356 WH	427	int kvm_deassign_device(struct kvm *kvm,
0a920356 WH	428	struct kvm_assigned_dev_kernel *assigned_dev);
19de40a8	429	#else /* CONFIG_IOMMU_API */
62c476c7 BAY	430	static inline int kvm_iommu_map_pages(struct kvm *kvm,
	431	gfn_t base_gfn,
	432	unsigned long npages)
	433	{
	434	return 0;
	435	}
	436
260782bc	437	static inline int kvm_iommu_map_guest(struct kvm *kvm)
62c476c7 BAY	438	{
	439	return -ENODEV;
	440	}
	441
	442	static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
	443	{
	444	return 0;
	445	}
260782bc WH	446
	447	static inline int kvm_assign_device(struct kvm *kvm,
	448	struct kvm_assigned_dev_kernel *assigned_dev)
	449	{
	450	return 0;
	451	}
0a920356 WH	452
	453	static inline int kvm_deassign_device(struct kvm *kvm,
	454	struct kvm_assigned_dev_kernel *assigned_dev)
	455	{
	456	return 0;
	457	}
19de40a8	458	#endif /* CONFIG_IOMMU_API */
62c476c7	459
d172fcd3 LV	460	static inline void kvm_guest_enter(void)
d172fcd3 LV	461	{
e56a7a28	462	account_system_vtime(current);
d172fcd3 LV	463	current->flags \|= PF_VCPU;
	464	}
	465
	466	static inline void kvm_guest_exit(void)
	467	{
e56a7a28	468	account_system_vtime(current);
d172fcd3 LV	469	current->flags &= ~PF_VCPU;
	470	}
	471
6aa8b732 AK	472	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	473	{
	474	return slot - kvm->memslots;
	475	}
	476
1755fbcc AK	477	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	478	{
	479	return (gpa_t)gfn << PAGE_SHIFT;
	480	}
6aa8b732	481
62c476c7 BAY	482	static inline hpa_t pfn_to_hpa(pfn_t pfn)
	483	{
	484	return (hpa_t)pfn << PAGE_SHIFT;
	485	}
	486
2f599714	487	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	488	{
	489	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	490	}
	491
ba1389b7 AK	492	enum kvm_stat_kind {
	493	KVM_STAT_VM,
	494	KVM_STAT_VCPU,
	495	};
	496
417bc304 HB	497	struct kvm_stats_debugfs_item {
	498	const char *name;
	499	int offset;
ba1389b7	500	enum kvm_stat_kind kind;
417bc304 HB	501	struct dentry *dentry;
	502	};
	503	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	504	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d	505
e930bffe AA	506	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	507	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	508	{
	509	if (unlikely(vcpu->kvm->mmu_notifier_count))
	510	return 1;
	511	/*
	512	* Both reads happen under the mmu_lock and both values are
	513	* modified under mmu_lock, so there's no need of smb_rmb()
	514	* here in between, otherwise mmu_notifier_count should be
	515	* read before mmu_notifier_seq, see
	516	* mmu_notifier_invalidate_range_end write side.
	517	*/
	518	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	519	return 1;
	520	return 0;
	521	}
	522	#endif
	523
399ec807 AK	524	#ifdef CONFIG_HAVE_KVM_IRQCHIP
	525
	526	#define KVM_MAX_IRQ_ROUTES 1024
	527
	528	int kvm_setup_default_irq_routing(struct kvm *kvm);
	529	int kvm_set_irq_routing(struct kvm *kvm,
	530	const struct kvm_irq_routing_entry *entries,
	531	unsigned nr,
	532	unsigned flags);
	533	void kvm_free_irq_routing(struct kvm *kvm);
	534
	535	#else
	536
	537	static inline void kvm_free_irq_routing(struct kvm *kvm) {}
	538
	539	#endif
	540
721eecbf GH	541	#ifdef CONFIG_HAVE_KVM_EVENTFD
721eecbf GH	542
d34e6b17	543	void kvm_eventfd_init(struct kvm *kvm);
721eecbf GH	544	int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
721eecbf GH	545	void kvm_irqfd_release(struct kvm *kvm);
d34e6b17	546	int kvm_ioeventfd(struct kvm kvm, struct kvm_ioeventfd args);
721eecbf GH	547
	548	#else
	549
d34e6b17	550	static inline void kvm_eventfd_init(struct kvm *kvm) {}
721eecbf GH	551	static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
	552	{
	553	return -EINVAL;
	554	}
	555
	556	static inline void kvm_irqfd_release(struct kvm *kvm) {}
d34e6b17 GH	557	static inline int kvm_ioeventfd(struct kvm kvm, struct kvm_ioeventfd args)
	558	{
	559	return -ENOSYS;
	560	}
721eecbf GH	561
	562	#endif /* CONFIG_HAVE_KVM_EVENTFD */
	563
73880c80	564	#ifdef CONFIG_KVM_APIC_ARCHITECTURE
c5af89b6 GN	565	static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
c5af89b6 GN	566	{
d3efc8ef	567	return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
c5af89b6	568	}
6aa8b732	569	#endif
73880c80	570	#endif