[linux.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 <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_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;
	int guest_mode;
	unsigned long requests;
	struct kvm_guest_debug 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 {
	struct mutex lock; /* protects the vcpus array and APIC accesses */
	spinlock_t mmu_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 kvm_io_bus mmio_bus;
	struct kvm_io_bus pio_bus;
	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

#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);
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);

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);
void kvm_arch_destroy_vm(struct kvm *kvm);

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_debug_guest(struct kvm_vcpu *vcpu,
				    struct kvm_debug_guest *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);

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);
};

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;
	int host_irq;
	int guest_irq;
	int irq_requested;
	int irq_source_id;
	struct pci_dev *dev;
	struct kvm *kvm;
};
void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi);
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);

#ifdef CONFIG_DMAR
int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
			unsigned long npages);
int kvm_iommu_map_guest(struct kvm *kvm,
			struct kvm_assigned_dev_kernel *assigned_dev);
int kvm_iommu_unmap_guest(struct kvm *kvm);
#else /* CONFIG_DMAR */
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,
				      struct kvm_assigned_dev_kernel
				      *assigned_dev)
{
	return -ENODEV;
}

static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
{
	return 0;
}
#endif /* CONFIG_DMAR */

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

#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>
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
6aa8b732	39
5550af4d SY	40	#define KVM_USERSPACE_IRQ_SOURCE_ID 0
5550af4d SY	41
6aa8b732	42	struct kvm_vcpu;
c16f862d	43	extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732	44
2eeb2e94 GH	45	/*
	46	* It would be nice to use something smarter than a linear search, TBD...
	47	* Thankfully we dont expect many devices to register (famous last words :),
	48	* so until then it will suffice. At least its abstracted so we can change
	49	* in one place.
	50	*/
	51	struct kvm_io_bus {
	52	int dev_count;
	53	#define NR_IOBUS_DEVS 6
	54	struct kvm_io_device *devs[NR_IOBUS_DEVS];
	55	};
	56
	57	void kvm_io_bus_init(struct kvm_io_bus *bus);
	58	void kvm_io_bus_destroy(struct kvm_io_bus *bus);
92760499 LV	59	struct kvm_io_device kvm_io_bus_find_dev(struct kvm_io_bus bus,
92760499 LV	60	gpa_t addr, int len, int is_write);
2eeb2e94 GH	61	void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
	62	struct kvm_io_device *dev);
	63
d17fbbf7 ZX	64	struct kvm_vcpu {
d17fbbf7 ZX	65	struct kvm *kvm;
31bb117e	66	#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7	67	struct preempt_notifier preempt_notifier;
31bb117e	68	#endif
d17fbbf7 ZX	69	int vcpu_id;
	70	struct mutex mutex;
	71	int cpu;
	72	struct kvm_run *run;
	73	int guest_mode;
	74	unsigned long requests;
	75	struct kvm_guest_debug guest_debug;
	76	int fpu_active;
	77	int guest_fpu_loaded;
	78	wait_queue_head_t wq;
	79	int sigset_active;
	80	sigset_t sigset;
	81	struct kvm_vcpu_stat stat;
	82
34c16eec	83	#ifdef CONFIG_HAS_IOMEM
d17fbbf7 ZX	84	int mmio_needed;
	85	int mmio_read_completed;
	86	int mmio_is_write;
	87	int mmio_size;
	88	unsigned char mmio_data[8];
6aa8b732	89	gpa_t mmio_phys_addr;
34c16eec	90	#endif
1165f5fe	91
d657a98e ZX	92	struct kvm_vcpu_arch arch;
	93	};
	94
6aa8b732 AK	95	struct kvm_memory_slot {
	96	gfn_t base_gfn;
	97	unsigned long npages;
	98	unsigned long flags;
290fc38d	99	unsigned long *rmap;
6aa8b732	100	unsigned long *dirty_bitmap;
05da4558 MT	101	struct {
	102	unsigned long rmap_pde;
	103	int write_count;
	104	} *lpage_info;
8a7ae055	105	unsigned long userspace_addr;
80b14b5b	106	int user_alloc;
6aa8b732 AK	107	};
	108
	109	struct kvm {
aaee2c94 MT	110	struct mutex lock; /* protects the vcpus array and APIC accesses */
aaee2c94 MT	111	spinlock_t mmu_lock;
72dc67a6	112	struct rw_semaphore slots_lock;
6d4e4c4f	113	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	114	int nmemslots;
e0d62c7f IE	115	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	116	KVM_PRIVATE_MEM_SLOTS];
fb3f0f51	117	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
133de902	118	struct list_head vm_list;
2eeb2e94	119	struct kvm_io_bus mmio_bus;
74906345	120	struct kvm_io_bus pio_bus;
ba1389b7	121	struct kvm_vm_stat stat;
d69fb81f	122	struct kvm_arch arch;
d39f13b0	123	atomic_t users_count;
5f94c174 LV	124	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	125	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	126	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	127	#endif
e930bffe AA	128
	129	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	130	struct mmu_notifier mmu_notifier;
	131	unsigned long mmu_notifier_seq;
	132	long mmu_notifier_count;
	133	#endif
6aa8b732 AK	134	};
6aa8b732 AK	135
f0242478 RR	136	/* The guest did something we don't support. */
	137	#define pr_unimpl(vcpu, fmt, ...) \
	138	do { \
	139	if (printk_ratelimit()) \
	140	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	141	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	142	} while (0)
f0242478	143
6aa8b732 AK	144	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	145	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	146
fb3f0f51 RR	147	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	148	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	149
313a3dc7 CO	150	void vcpu_load(struct kvm_vcpu *vcpu);
	151	void vcpu_put(struct kvm_vcpu *vcpu);
	152
f8c16bba	153	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	154	struct module *module);
cb498ea2	155	void kvm_exit(void);
6aa8b732	156
d39f13b0 IE	157	void kvm_get_kvm(struct kvm *kvm);
	158	void kvm_put_kvm(struct kvm *kvm);
	159
6aa8b732 AK	160	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	161	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	162	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	163	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	164
cea7bb21	165	extern struct page *bad_page;
35149e21	166	extern pfn_t bad_pfn;
6aa8b732	167
cea7bb21	168	int is_error_page(struct page *page);
35149e21	169	int is_error_pfn(pfn_t pfn);
f9d46eb0	170	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	171	int kvm_set_memory_region(struct kvm *kvm,
	172	struct kvm_userspace_memory_region *mem,
	173	int user_alloc);
f78e0e2e SY	174	int __kvm_set_memory_region(struct kvm *kvm,
	175	struct kvm_userspace_memory_region *mem,
	176	int user_alloc);
0de10343 ZX	177	int kvm_arch_set_memory_region(struct kvm *kvm,
	178	struct kvm_userspace_memory_region *mem,
	179	struct kvm_memory_slot old,
	180	int user_alloc);
34d4cb8f	181	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	182	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	183	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	184	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	185	void kvm_release_page_clean(struct page *page);
b4231d61 IE	186	void kvm_release_page_dirty(struct page *page);
35149e21 AL	187	void kvm_set_page_dirty(struct page *page);
	188	void kvm_set_page_accessed(struct page *page);
	189
	190	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	191	void kvm_release_pfn_dirty(pfn_t);
	192	void kvm_release_pfn_clean(pfn_t pfn);
	193	void kvm_set_pfn_dirty(pfn_t pfn);
	194	void kvm_set_pfn_accessed(pfn_t pfn);
	195	void kvm_get_pfn(pfn_t pfn);
	196
195aefde IE	197	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	198	int len);
7ec54588 MT	199	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	200	unsigned long len);
195aefde IE	201	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	202	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	203	int offset, int len);
	204	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	205	unsigned long len);
	206	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	207	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	208	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	209	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	210	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	211
8776e519	212	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	213	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	214	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	215	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	216	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	217	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	218
043405e1 CO	219	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	220	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	221	long kvm_arch_vcpu_ioctl(struct file *filp,
	222	unsigned int ioctl, unsigned long arg);
	223	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	224	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
018d00d2 ZX	225
	226	int kvm_dev_ioctl_check_extension(long ext);
	227
5bb064dc ZX	228	int kvm_get_dirty_log(struct kvm *kvm,
	229	struct kvm_dirty_log log, int is_dirty);
	230	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	231	struct kvm_dirty_log *log);
	232
1fe779f8 CO	233	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	234	struct
	235	kvm_userspace_memory_region *mem,
	236	int user_alloc);
	237	long kvm_arch_vm_ioctl(struct file *filp,
	238	unsigned int ioctl, unsigned long arg);
	239	void kvm_arch_destroy_vm(struct kvm *kvm);
313a3dc7	240
d0752060 HB	241	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	242	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	243
8b006791 ZX	244	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	245	struct kvm_translation *tr);
	246
b6c7a5dc HB	247	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	248	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	249	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	250	struct kvm_sregs *sregs);
	251	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	252	struct kvm_sregs *sregs);
62d9f0db MT	253	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	254	struct kvm_mp_state *mp_state);
	255	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	256	struct kvm_mp_state *mp_state);
b6c7a5dc HB	257	int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
	258	struct kvm_debug_guest *dbg);
	259	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
	260
f8c16bba ZX	261	int kvm_arch_init(void *opaque);
f8c16bba ZX	262	void kvm_arch_exit(void);
043405e1	263
e9b11c17 ZX	264	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
	265	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
	266
	267	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
	268	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	269	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
	270	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id);
26e5215f	271	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62	272	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17 ZX	273
	274	int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
	275	void kvm_arch_hardware_enable(void *garbage);
	276	void kvm_arch_hardware_disable(void *garbage);
	277	int kvm_arch_hardware_setup(void);
	278	void kvm_arch_hardware_unsetup(void);
	279	void kvm_arch_check_processor_compat(void *rtn);
1d737c8a	280	int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
e9b11c17	281
d19a9cd2 ZX	282	void kvm_free_physmem(struct kvm *kvm);
	283
	284	struct kvm *kvm_arch_create_vm(void);
	285	void kvm_arch_destroy_vm(struct kvm *kvm);
8a98f664	286	void kvm_free_all_assigned_devices(struct kvm *kvm);
e9b11c17	287
682c59a3 ZX	288	int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
682c59a3 ZX	289	int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d	290	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	291	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	292
c77fb9dc XZ	293	int kvm_is_mmio_pfn(pfn_t pfn);
c77fb9dc XZ	294
62c476c7 BAY	295	struct kvm_irq_ack_notifier {
	296	struct hlist_node link;
	297	unsigned gsi;
	298	void (irq_acked)(struct kvm_irq_ack_notifier kian);
	299	};
	300
	301	struct kvm_assigned_dev_kernel {
	302	struct kvm_irq_ack_notifier ack_notifier;
	303	struct work_struct interrupt_work;
	304	struct list_head list;
	305	int assigned_dev_id;
	306	int host_busnr;
	307	int host_devfn;
	308	int host_irq;
	309	int guest_irq;
	310	int irq_requested;
5550af4d	311	int irq_source_id;
62c476c7 BAY	312	struct pci_dev *dev;
	313	struct kvm *kvm;
	314	};
5550af4d	315	void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
3de42dc0 XZ	316	void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi);
	317	void kvm_register_irq_ack_notifier(struct kvm *kvm,
	318	struct kvm_irq_ack_notifier *kian);
	319	void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
	320	struct kvm_irq_ack_notifier *kian);
5550af4d SY	321	int kvm_request_irq_source_id(struct kvm *kvm);
5550af4d SY	322	void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7 BAY	323
	324	#ifdef CONFIG_DMAR
	325	int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
	326	unsigned long npages);
	327	int kvm_iommu_map_guest(struct kvm *kvm,
	328	struct kvm_assigned_dev_kernel *assigned_dev);
	329	int kvm_iommu_unmap_guest(struct kvm *kvm);
	330	#else /* CONFIG_DMAR */
	331	static inline int kvm_iommu_map_pages(struct kvm *kvm,
	332	gfn_t base_gfn,
	333	unsigned long npages)
	334	{
	335	return 0;
	336	}
	337
	338	static inline int kvm_iommu_map_guest(struct kvm *kvm,
	339	struct kvm_assigned_dev_kernel
	340	*assigned_dev)
	341	{
	342	return -ENODEV;
	343	}
	344
	345	static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
	346	{
	347	return 0;
	348	}
	349	#endif /* CONFIG_DMAR */
	350
d172fcd3 LV	351	static inline void kvm_guest_enter(void)
d172fcd3 LV	352	{
e56a7a28	353	account_system_vtime(current);
d172fcd3 LV	354	current->flags \|= PF_VCPU;
	355	}
	356
	357	static inline void kvm_guest_exit(void)
	358	{
e56a7a28	359	account_system_vtime(current);
d172fcd3 LV	360	current->flags &= ~PF_VCPU;
	361	}
	362
6aa8b732 AK	363	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	364	{
	365	return slot - kvm->memslots;
	366	}
	367
1755fbcc AK	368	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	369	{
	370	return (gpa_t)gfn << PAGE_SHIFT;
	371	}
6aa8b732	372
62c476c7 BAY	373	static inline hpa_t pfn_to_hpa(pfn_t pfn)
	374	{
	375	return (hpa_t)pfn << PAGE_SHIFT;
	376	}
	377
2f599714	378	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	379	{
	380	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	381	}
	382
ba1389b7 AK	383	enum kvm_stat_kind {
	384	KVM_STAT_VM,
	385	KVM_STAT_VCPU,
	386	};
	387
417bc304 HB	388	struct kvm_stats_debugfs_item {
	389	const char *name;
	390	int offset;
ba1389b7	391	enum kvm_stat_kind kind;
417bc304 HB	392	struct dentry *dentry;
	393	};
	394	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	395	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d	396
d98e6346 HB	397	#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
	398	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	399	vcpu, 5, d1, d2, d3, d4, d5)
	400	#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
	401	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	402	vcpu, 4, d1, d2, d3, d4, 0)
	403	#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
	404	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	405	vcpu, 3, d1, d2, d3, 0, 0)
	406	#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
	407	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	408	vcpu, 2, d1, d2, 0, 0, 0)
	409	#define KVMTRACE_1D(evt, vcpu, d1, name) \
	410	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	411	vcpu, 1, d1, 0, 0, 0, 0)
	412	#define KVMTRACE_0D(evt, vcpu, name) \
	413	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	414	vcpu, 0, 0, 0, 0, 0, 0)
	415
d4c9ff2d FEL	416	#ifdef CONFIG_KVM_TRACE
	417	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
	418	void kvm_trace_cleanup(void);
	419	#else
	420	static inline
	421	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
	422	{
	423	return -EINVAL;
	424	}
	425	#define kvm_trace_cleanup() ((void)0)
	426	#endif
417bc304	427
e930bffe AA	428	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	429	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	430	{
	431	if (unlikely(vcpu->kvm->mmu_notifier_count))
	432	return 1;
	433	/*
	434	* Both reads happen under the mmu_lock and both values are
	435	* modified under mmu_lock, so there's no need of smb_rmb()
	436	* here in between, otherwise mmu_notifier_count should be
	437	* read before mmu_notifier_seq, see
	438	* mmu_notifier_invalidate_range_end write side.
	439	*/
	440	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	441	return 1;
	442	return 0;
	443	}
	444	#endif
	445
6aa8b732	446	#endif