[mirror_ubuntu-zesty-kernel.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/marker.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_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);
struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus,
					  gpa_t addr, int len, int is_write);
void kvm_io_bus_register_dev(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;
	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 level);
	union {
		struct {
			unsigned irqchip;
			unsigned pin;
		} irqchip;
		struct msi_msg msi;
	};
	struct list_head link;
};

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];
	struct kvm_vcpu *vcpus[KVM_MAX_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;
#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 list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
	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)

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_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);
int kvm_arch_interrupt_allowed(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_get_interrupt(struct kvm_vcpu *v);
int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
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);

int kvm_set_irq(struct kvm *kvm, int irq_source_id, int 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;

#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
						vcpu, 5, d1, d2, d3, d4, d5)
#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
						vcpu, 4, d1, d2, d3, d4, 0)
#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
						vcpu, 3, d1, d2, d3, 0, 0)
#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
						vcpu, 2, d1, d2, 0, 0, 0)
#define KVMTRACE_1D(evt, vcpu, d1, name) \
	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
						vcpu, 1, d1, 0, 0, 0, 0)
#define KVMTRACE_0D(evt, vcpu, name) \
	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
						vcpu, 0, 0, 0, 0, 0, 0)

#ifdef CONFIG_KVM_TRACE
int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
void kvm_trace_cleanup(void);
#else
static inline
int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
{
	return -EINVAL;
}
#define kvm_trace_cleanup() ((void)0)
#endif

#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_irqfd_init(struct kvm *kvm);
int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
void kvm_irqfd_release(struct kvm *kvm);

#else

static inline void kvm_irqfd_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) {}

#endif /* CONFIG_HAVE_KVM_EVENTFD */

#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>
d4c9ff2d	18	#include <linux/marker.h>
0937c48d	19	#include <linux/msi.h>
e8edc6e0	20	#include <asm/signal.h>
6aa8b732	21
6aa8b732	22	#include <linux/kvm.h>
102d8325	23	#include <linux/kvm_para.h>
6aa8b732	24
edf88417	25	#include <linux/kvm_types.h>
d77a39d9	26
edf88417	27	#include <asm/kvm_host.h>
d657a98e	28
d9e368d6 AK	29	/*
	30	* vcpu->requests bit members
	31	*/
3176bc3e	32	#define KVM_REQ_TLB_FLUSH 0
2f52d58c	33	#define KVM_REQ_MIGRATE_TIMER 1
b209749f	34	#define KVM_REQ_REPORT_TPR_ACCESS 2
2e53d63a	35	#define KVM_REQ_MMU_RELOAD 3
71c4dfaf	36	#define KVM_REQ_TRIPLE_FAULT 4
06e05645	37	#define KVM_REQ_PENDING_TIMER 5
d7690175	38	#define KVM_REQ_UNHALT 6
4731d4c7	39	#define KVM_REQ_MMU_SYNC 7
c8076604	40	#define KVM_REQ_KVMCLOCK_UPDATE 8
32f88400	41	#define KVM_REQ_KICK 9
6aa8b732	42
5550af4d SY	43	#define KVM_USERSPACE_IRQ_SOURCE_ID 0
5550af4d SY	44
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);
92760499 LV	62	struct kvm_io_device kvm_io_bus_find_dev(struct kvm_io_bus bus,
92760499 LV	63	gpa_t addr, int len, int is_write);
2eeb2e94 GH	64	void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
	65	struct kvm_io_device *dev);
	66
d17fbbf7 ZX	67	struct kvm_vcpu {
d17fbbf7 ZX	68	struct kvm *kvm;
31bb117e	69	#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7	70	struct preempt_notifier preempt_notifier;
31bb117e	71	#endif
d17fbbf7 ZX	72	int vcpu_id;
	73	struct mutex mutex;
	74	int cpu;
	75	struct kvm_run *run;
d17fbbf7	76	unsigned long requests;
d0bfb940	77	unsigned long guest_debug;
d17fbbf7 ZX	78	int fpu_active;
	79	int guest_fpu_loaded;
	80	wait_queue_head_t wq;
	81	int sigset_active;
	82	sigset_t sigset;
	83	struct kvm_vcpu_stat stat;
	84
34c16eec	85	#ifdef CONFIG_HAS_IOMEM
d17fbbf7 ZX	86	int mmio_needed;
	87	int mmio_read_completed;
	88	int mmio_is_write;
	89	int mmio_size;
	90	unsigned char mmio_data[8];
6aa8b732	91	gpa_t mmio_phys_addr;
34c16eec	92	#endif
1165f5fe	93
d657a98e ZX	94	struct kvm_vcpu_arch arch;
	95	};
	96
6aa8b732 AK	97	struct kvm_memory_slot {
	98	gfn_t base_gfn;
	99	unsigned long npages;
	100	unsigned long flags;
290fc38d	101	unsigned long *rmap;
6aa8b732	102	unsigned long *dirty_bitmap;
05da4558 MT	103	struct {
	104	unsigned long rmap_pde;
	105	int write_count;
	106	} *lpage_info;
8a7ae055	107	unsigned long userspace_addr;
80b14b5b	108	int user_alloc;
6aa8b732 AK	109	};
6aa8b732 AK	110
399ec807 AK	111	struct kvm_kernel_irq_routing_entry {
399ec807 AK	112	u32 gsi;
5116d8f6	113	u32 type;
4925663a	114	int (set)(struct kvm_kernel_irq_routing_entry e,
399ec807 AK	115	struct kvm *kvm, int level);
	116	union {
	117	struct {
	118	unsigned irqchip;
	119	unsigned pin;
	120	} irqchip;
79950e10	121	struct msi_msg msi;
399ec807 AK	122	};
	123	struct list_head link;
	124	};
	125
6aa8b732	126	struct kvm {
aaee2c94	127	spinlock_t mmu_lock;
84261923	128	spinlock_t requests_lock;
72dc67a6	129	struct rw_semaphore slots_lock;
6d4e4c4f	130	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	131	int nmemslots;
e0d62c7f IE	132	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	133	KVM_PRIVATE_MEM_SLOTS];
fb3f0f51	134	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
133de902	135	struct list_head vm_list;
60eead79	136	struct mutex lock;
2eeb2e94	137	struct kvm_io_bus mmio_bus;
74906345	138	struct kvm_io_bus pio_bus;
721eecbf GH	139	#ifdef CONFIG_HAVE_KVM_EVENTFD
	140	struct {
	141	spinlock_t lock;
	142	struct list_head items;
	143	} irqfds;
	144	#endif
ba1389b7	145	struct kvm_vm_stat stat;
d69fb81f	146	struct kvm_arch arch;
d39f13b0	147	atomic_t users_count;
5f94c174 LV	148	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	149	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	150	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	151	#endif
e930bffe	152
60eead79	153	struct mutex irq_lock;
75858a84	154	#ifdef CONFIG_HAVE_KVM_IRQCHIP
399ec807	155	struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
75858a84 AK	156	struct hlist_head mask_notifier_list;
	157	#endif
	158
e930bffe AA	159	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	160	struct mmu_notifier mmu_notifier;
	161	unsigned long mmu_notifier_seq;
	162	long mmu_notifier_count;
	163	#endif
6aa8b732 AK	164	};
6aa8b732 AK	165
f0242478 RR	166	/* The guest did something we don't support. */
	167	#define pr_unimpl(vcpu, fmt, ...) \
	168	do { \
	169	if (printk_ratelimit()) \
	170	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	171	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	172	} while (0)
f0242478	173
6aa8b732 AK	174	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	175	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	176
fb3f0f51 RR	177	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	178	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	179
313a3dc7 CO	180	void vcpu_load(struct kvm_vcpu *vcpu);
	181	void vcpu_put(struct kvm_vcpu *vcpu);
	182
f8c16bba	183	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	184	struct module *module);
cb498ea2	185	void kvm_exit(void);
6aa8b732	186
d39f13b0 IE	187	void kvm_get_kvm(struct kvm *kvm);
	188	void kvm_put_kvm(struct kvm *kvm);
	189
6aa8b732 AK	190	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	191	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	192	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	193	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	194
cea7bb21	195	extern struct page *bad_page;
35149e21	196	extern pfn_t bad_pfn;
6aa8b732	197
cea7bb21	198	int is_error_page(struct page *page);
35149e21	199	int is_error_pfn(pfn_t pfn);
f9d46eb0	200	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	201	int kvm_set_memory_region(struct kvm *kvm,
	202	struct kvm_userspace_memory_region *mem,
	203	int user_alloc);
f78e0e2e SY	204	int __kvm_set_memory_region(struct kvm *kvm,
	205	struct kvm_userspace_memory_region *mem,
	206	int user_alloc);
0de10343 ZX	207	int kvm_arch_set_memory_region(struct kvm *kvm,
	208	struct kvm_userspace_memory_region *mem,
	209	struct kvm_memory_slot old,
	210	int user_alloc);
34d4cb8f	211	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	212	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	213	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	214	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	215	void kvm_release_page_clean(struct page *page);
b4231d61 IE	216	void kvm_release_page_dirty(struct page *page);
35149e21 AL	217	void kvm_set_page_dirty(struct page *page);
	218	void kvm_set_page_accessed(struct page *page);
	219
	220	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	221	void kvm_release_pfn_dirty(pfn_t);
	222	void kvm_release_pfn_clean(pfn_t pfn);
	223	void kvm_set_pfn_dirty(pfn_t pfn);
	224	void kvm_set_pfn_accessed(pfn_t pfn);
	225	void kvm_get_pfn(pfn_t pfn);
	226
195aefde IE	227	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	228	int len);
7ec54588 MT	229	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	230	unsigned long len);
195aefde IE	231	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	232	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	233	int offset, int len);
	234	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	235	unsigned long len);
	236	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	237	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	238	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	239	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	240	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	241
8776e519	242	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	243	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	244	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	245	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	246	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	247	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	248
043405e1 CO	249	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	250	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	251	long kvm_arch_vcpu_ioctl(struct file *filp,
313a3dc7 CO	252	unsigned int ioctl, unsigned long arg);
018d00d2 ZX	253
	254	int kvm_dev_ioctl_check_extension(long ext);
	255
5bb064dc ZX	256	int kvm_get_dirty_log(struct kvm *kvm,
	257	struct kvm_dirty_log log, int is_dirty);
	258	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	259	struct kvm_dirty_log *log);
	260
1fe779f8 CO	261	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	262	struct
	263	kvm_userspace_memory_region *mem,
	264	int user_alloc);
	265	long kvm_arch_vm_ioctl(struct file *filp,
	266	unsigned int ioctl, unsigned long arg);
313a3dc7	267
d0752060 HB	268	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	269	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	270
8b006791 ZX	271	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	272	struct kvm_translation *tr);
	273
b6c7a5dc HB	274	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	275	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	276	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	277	struct kvm_sregs *sregs);
	278	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	279	struct kvm_sregs *sregs);
62d9f0db MT	280	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	281	struct kvm_mp_state *mp_state);
	282	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	283	struct kvm_mp_state *mp_state);
d0bfb940 JK	284	int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
d0bfb940 JK	285	struct kvm_guest_debug *dbg);
b6c7a5dc HB	286	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
b6c7a5dc HB	287
f8c16bba ZX	288	int kvm_arch_init(void *opaque);
f8c16bba ZX	289	void kvm_arch_exit(void);
043405e1	290
e9b11c17 ZX	291	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
	292	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
	293
	294	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
	295	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	296	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
	297	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id);
26e5215f	298	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62	299	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17 ZX	300
	301	int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
	302	void kvm_arch_hardware_enable(void *garbage);
	303	void kvm_arch_hardware_disable(void *garbage);
	304	int kvm_arch_hardware_setup(void);
	305	void kvm_arch_hardware_unsetup(void);
	306	void kvm_arch_check_processor_compat(void *rtn);
1d737c8a	307	int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
78646121	308	int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
e9b11c17	309
d19a9cd2 ZX	310	void kvm_free_physmem(struct kvm *kvm);
	311
	312	struct kvm *kvm_arch_create_vm(void);
	313	void kvm_arch_destroy_vm(struct kvm *kvm);
8a98f664	314	void kvm_free_all_assigned_devices(struct kvm *kvm);
ad8ba2cd	315	void kvm_arch_sync_events(struct kvm *kvm);
e9b11c17	316
682c59a3 ZX	317	int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
682c59a3 ZX	318	int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d	319	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	320	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	321
c77fb9dc XZ	322	int kvm_is_mmio_pfn(pfn_t pfn);
c77fb9dc XZ	323
62c476c7 BAY	324	struct kvm_irq_ack_notifier {
	325	struct hlist_node link;
	326	unsigned gsi;
	327	void (irq_acked)(struct kvm_irq_ack_notifier kian);
	328	};
	329
2350bd1f	330	#define KVM_ASSIGNED_MSIX_PENDING 0x1
c1e01514 SY	331	struct kvm_guest_msix_entry {
	332	u32 vector;
	333	u16 entry;
	334	u16 flags;
	335	};
	336
62c476c7 BAY	337	struct kvm_assigned_dev_kernel {
	338	struct kvm_irq_ack_notifier ack_notifier;
	339	struct work_struct interrupt_work;
	340	struct list_head list;
	341	int assigned_dev_id;
	342	int host_busnr;
	343	int host_devfn;
c1e01514	344	unsigned int entries_nr;
62c476c7	345	int host_irq;
defaf158	346	bool host_irq_disabled;
c1e01514	347	struct msix_entry *host_msix_entries;
62c476c7	348	int guest_irq;
c1e01514	349	struct kvm_guest_msix_entry *guest_msix_entries;
4f906c19	350	unsigned long irq_requested_type;
5550af4d	351	int irq_source_id;
b653574a	352	int flags;
62c476c7 BAY	353	struct pci_dev *dev;
62c476c7 BAY	354	struct kvm *kvm;
547de29e	355	spinlock_t assigned_dev_lock;
62c476c7	356	};
75858a84 AK	357
	358	struct kvm_irq_mask_notifier {
	359	void (func)(struct kvm_irq_mask_notifier kimn, bool masked);
	360	int irq;
	361	struct hlist_node link;
	362	};
	363
	364	void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
	365	struct kvm_irq_mask_notifier *kimn);
	366	void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
	367	struct kvm_irq_mask_notifier *kimn);
	368	void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
	369
4925663a	370	int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
44882eed	371	void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
3de42dc0 XZ	372	void kvm_register_irq_ack_notifier(struct kvm *kvm,
3de42dc0 XZ	373	struct kvm_irq_ack_notifier *kian);
fa40a821 MT	374	void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
fa40a821 MT	375	struct kvm_irq_ack_notifier *kian);
5550af4d SY	376	int kvm_request_irq_source_id(struct kvm *kvm);
5550af4d SY	377	void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7	378
522c68c4 SY	379	/* For vcpu->arch.iommu_flags */
	380	#define KVM_IOMMU_CACHE_COHERENCY 0x1
	381
19de40a8	382	#ifdef CONFIG_IOMMU_API
62c476c7 BAY	383	int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
62c476c7 BAY	384	unsigned long npages);
260782bc	385	int kvm_iommu_map_guest(struct kvm *kvm);
62c476c7	386	int kvm_iommu_unmap_guest(struct kvm *kvm);
260782bc WH	387	int kvm_assign_device(struct kvm *kvm,
260782bc WH	388	struct kvm_assigned_dev_kernel *assigned_dev);
0a920356 WH	389	int kvm_deassign_device(struct kvm *kvm,
0a920356 WH	390	struct kvm_assigned_dev_kernel *assigned_dev);
19de40a8	391	#else /* CONFIG_IOMMU_API */
62c476c7 BAY	392	static inline int kvm_iommu_map_pages(struct kvm *kvm,
	393	gfn_t base_gfn,
	394	unsigned long npages)
	395	{
	396	return 0;
	397	}
	398
260782bc	399	static inline int kvm_iommu_map_guest(struct kvm *kvm)
62c476c7 BAY	400	{
	401	return -ENODEV;
	402	}
	403
	404	static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
	405	{
	406	return 0;
	407	}
260782bc WH	408
	409	static inline int kvm_assign_device(struct kvm *kvm,
	410	struct kvm_assigned_dev_kernel *assigned_dev)
	411	{
	412	return 0;
	413	}
0a920356 WH	414
	415	static inline int kvm_deassign_device(struct kvm *kvm,
	416	struct kvm_assigned_dev_kernel *assigned_dev)
	417	{
	418	return 0;
	419	}
19de40a8	420	#endif /* CONFIG_IOMMU_API */
62c476c7	421
d172fcd3 LV	422	static inline void kvm_guest_enter(void)
d172fcd3 LV	423	{
e56a7a28	424	account_system_vtime(current);
d172fcd3 LV	425	current->flags \|= PF_VCPU;
	426	}
	427
	428	static inline void kvm_guest_exit(void)
	429	{
e56a7a28	430	account_system_vtime(current);
d172fcd3 LV	431	current->flags &= ~PF_VCPU;
	432	}
	433
6aa8b732 AK	434	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	435	{
	436	return slot - kvm->memslots;
	437	}
	438
1755fbcc AK	439	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	440	{
	441	return (gpa_t)gfn << PAGE_SHIFT;
	442	}
6aa8b732	443
62c476c7 BAY	444	static inline hpa_t pfn_to_hpa(pfn_t pfn)
	445	{
	446	return (hpa_t)pfn << PAGE_SHIFT;
	447	}
	448
2f599714	449	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	450	{
	451	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	452	}
	453
ba1389b7 AK	454	enum kvm_stat_kind {
	455	KVM_STAT_VM,
	456	KVM_STAT_VCPU,
	457	};
	458
417bc304 HB	459	struct kvm_stats_debugfs_item {
	460	const char *name;
	461	int offset;
ba1389b7	462	enum kvm_stat_kind kind;
417bc304 HB	463	struct dentry *dentry;
	464	};
	465	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	466	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d	467
d98e6346 HB	468	#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
	469	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	470	vcpu, 5, d1, d2, d3, d4, d5)
	471	#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
	472	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	473	vcpu, 4, d1, d2, d3, d4, 0)
	474	#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
	475	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	476	vcpu, 3, d1, d2, d3, 0, 0)
	477	#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
	478	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	479	vcpu, 2, d1, d2, 0, 0, 0)
	480	#define KVMTRACE_1D(evt, vcpu, d1, name) \
	481	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	482	vcpu, 1, d1, 0, 0, 0, 0)
	483	#define KVMTRACE_0D(evt, vcpu, name) \
	484	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	485	vcpu, 0, 0, 0, 0, 0, 0)
	486
d4c9ff2d FEL	487	#ifdef CONFIG_KVM_TRACE
	488	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
	489	void kvm_trace_cleanup(void);
	490	#else
	491	static inline
	492	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
	493	{
	494	return -EINVAL;
	495	}
	496	#define kvm_trace_cleanup() ((void)0)
	497	#endif
417bc304	498
e930bffe AA	499	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	500	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	501	{
	502	if (unlikely(vcpu->kvm->mmu_notifier_count))
	503	return 1;
	504	/*
	505	* Both reads happen under the mmu_lock and both values are
	506	* modified under mmu_lock, so there's no need of smb_rmb()
	507	* here in between, otherwise mmu_notifier_count should be
	508	* read before mmu_notifier_seq, see
	509	* mmu_notifier_invalidate_range_end write side.
	510	*/
	511	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	512	return 1;
	513	return 0;
	514	}
	515	#endif
	516
399ec807 AK	517	#ifdef CONFIG_HAVE_KVM_IRQCHIP
	518
	519	#define KVM_MAX_IRQ_ROUTES 1024
	520
	521	int kvm_setup_default_irq_routing(struct kvm *kvm);
	522	int kvm_set_irq_routing(struct kvm *kvm,
	523	const struct kvm_irq_routing_entry *entries,
	524	unsigned nr,
	525	unsigned flags);
	526	void kvm_free_irq_routing(struct kvm *kvm);
	527
	528	#else
	529
	530	static inline void kvm_free_irq_routing(struct kvm *kvm) {}
	531
	532	#endif
	533
721eecbf GH	534	#ifdef CONFIG_HAVE_KVM_EVENTFD
	535
	536	void kvm_irqfd_init(struct kvm *kvm);
	537	int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
	538	void kvm_irqfd_release(struct kvm *kvm);
	539
	540	#else
	541
	542	static inline void kvm_irqfd_init(struct kvm *kvm) {}
	543	static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
	544	{
	545	return -EINVAL;
	546	}
	547
	548	static inline void kvm_irqfd_release(struct kvm *kvm) {}
	549
	550	#endif /* CONFIG_HAVE_KVM_EVENTFD */
	551
6aa8b732	552	#endif