[deliverable/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

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);

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);

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 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 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
6aa8b732	37
6aa8b732	38	struct kvm_vcpu;
c16f862d	39	extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732	40
2eeb2e94 GH	41	/*
	42	* It would be nice to use something smarter than a linear search, TBD...
	43	* Thankfully we dont expect many devices to register (famous last words :),
	44	* so until then it will suffice. At least its abstracted so we can change
	45	* in one place.
	46	*/
	47	struct kvm_io_bus {
	48	int dev_count;
	49	#define NR_IOBUS_DEVS 6
	50	struct kvm_io_device *devs[NR_IOBUS_DEVS];
	51	};
	52
	53	void kvm_io_bus_init(struct kvm_io_bus *bus);
	54	void kvm_io_bus_destroy(struct kvm_io_bus *bus);
92760499 LV	55	struct kvm_io_device kvm_io_bus_find_dev(struct kvm_io_bus bus,
92760499 LV	56	gpa_t addr, int len, int is_write);
2eeb2e94 GH	57	void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
	58	struct kvm_io_device *dev);
	59
d17fbbf7 ZX	60	struct kvm_vcpu {
d17fbbf7 ZX	61	struct kvm *kvm;
31bb117e	62	#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7	63	struct preempt_notifier preempt_notifier;
31bb117e	64	#endif
d17fbbf7 ZX	65	int vcpu_id;
	66	struct mutex mutex;
	67	int cpu;
	68	struct kvm_run *run;
	69	int guest_mode;
	70	unsigned long requests;
	71	struct kvm_guest_debug guest_debug;
	72	int fpu_active;
	73	int guest_fpu_loaded;
	74	wait_queue_head_t wq;
	75	int sigset_active;
	76	sigset_t sigset;
	77	struct kvm_vcpu_stat stat;
	78
34c16eec	79	#ifdef CONFIG_HAS_IOMEM
d17fbbf7 ZX	80	int mmio_needed;
	81	int mmio_read_completed;
	82	int mmio_is_write;
	83	int mmio_size;
	84	unsigned char mmio_data[8];
6aa8b732	85	gpa_t mmio_phys_addr;
34c16eec	86	#endif
1165f5fe	87
d657a98e ZX	88	struct kvm_vcpu_arch arch;
	89	};
	90
6aa8b732 AK	91	struct kvm_memory_slot {
	92	gfn_t base_gfn;
	93	unsigned long npages;
	94	unsigned long flags;
290fc38d	95	unsigned long *rmap;
6aa8b732	96	unsigned long *dirty_bitmap;
05da4558 MT	97	struct {
	98	unsigned long rmap_pde;
	99	int write_count;
	100	} *lpage_info;
8a7ae055	101	unsigned long userspace_addr;
80b14b5b	102	int user_alloc;
6aa8b732 AK	103	};
	104
	105	struct kvm {
aaee2c94 MT	106	struct mutex lock; /* protects the vcpus array and APIC accesses */
aaee2c94 MT	107	spinlock_t mmu_lock;
72dc67a6	108	struct rw_semaphore slots_lock;
6d4e4c4f	109	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	110	int nmemslots;
e0d62c7f IE	111	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	112	KVM_PRIVATE_MEM_SLOTS];
fb3f0f51	113	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
133de902	114	struct list_head vm_list;
2eeb2e94	115	struct kvm_io_bus mmio_bus;
74906345	116	struct kvm_io_bus pio_bus;
ba1389b7	117	struct kvm_vm_stat stat;
d69fb81f	118	struct kvm_arch arch;
d39f13b0	119	atomic_t users_count;
5f94c174 LV	120	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	121	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	122	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	123	#endif
e930bffe AA	124
	125	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	126	struct mmu_notifier mmu_notifier;
	127	unsigned long mmu_notifier_seq;
	128	long mmu_notifier_count;
	129	#endif
6aa8b732 AK	130	};
6aa8b732 AK	131
f0242478 RR	132	/* The guest did something we don't support. */
	133	#define pr_unimpl(vcpu, fmt, ...) \
	134	do { \
	135	if (printk_ratelimit()) \
	136	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	137	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	138	} while (0)
f0242478	139
6aa8b732 AK	140	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	141	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	142
fb3f0f51 RR	143	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	144	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	145
313a3dc7 CO	146	void vcpu_load(struct kvm_vcpu *vcpu);
	147	void vcpu_put(struct kvm_vcpu *vcpu);
	148
f8c16bba	149	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	150	struct module *module);
cb498ea2	151	void kvm_exit(void);
6aa8b732	152
d39f13b0 IE	153	void kvm_get_kvm(struct kvm *kvm);
	154	void kvm_put_kvm(struct kvm *kvm);
	155
6aa8b732 AK	156	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	157	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	158	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	159	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	160
cea7bb21	161	extern struct page *bad_page;
35149e21	162	extern pfn_t bad_pfn;
6aa8b732	163
cea7bb21	164	int is_error_page(struct page *page);
35149e21	165	int is_error_pfn(pfn_t pfn);
f9d46eb0	166	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	167	int kvm_set_memory_region(struct kvm *kvm,
	168	struct kvm_userspace_memory_region *mem,
	169	int user_alloc);
f78e0e2e SY	170	int __kvm_set_memory_region(struct kvm *kvm,
	171	struct kvm_userspace_memory_region *mem,
	172	int user_alloc);
0de10343 ZX	173	int kvm_arch_set_memory_region(struct kvm *kvm,
	174	struct kvm_userspace_memory_region *mem,
	175	struct kvm_memory_slot old,
	176	int user_alloc);
34d4cb8f	177	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	178	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	179	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	180	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	181	void kvm_release_page_clean(struct page *page);
b4231d61 IE	182	void kvm_release_page_dirty(struct page *page);
35149e21 AL	183	void kvm_set_page_dirty(struct page *page);
	184	void kvm_set_page_accessed(struct page *page);
	185
	186	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	187	void kvm_release_pfn_dirty(pfn_t);
	188	void kvm_release_pfn_clean(pfn_t pfn);
	189	void kvm_set_pfn_dirty(pfn_t pfn);
	190	void kvm_set_pfn_accessed(pfn_t pfn);
	191	void kvm_get_pfn(pfn_t pfn);
	192
195aefde IE	193	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	194	int len);
7ec54588 MT	195	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	196	unsigned long len);
195aefde IE	197	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	198	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	199	int offset, int len);
	200	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	201	unsigned long len);
	202	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	203	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	204	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	205	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	206	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	207
8776e519	208	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	209	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	210	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	211	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	212	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	213	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	214
043405e1 CO	215	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	216	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	217	long kvm_arch_vcpu_ioctl(struct file *filp,
	218	unsigned int ioctl, unsigned long arg);
	219	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	220	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
018d00d2 ZX	221
	222	int kvm_dev_ioctl_check_extension(long ext);
	223
5bb064dc ZX	224	int kvm_get_dirty_log(struct kvm *kvm,
	225	struct kvm_dirty_log log, int is_dirty);
	226	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	227	struct kvm_dirty_log *log);
	228
1fe779f8 CO	229	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	230	struct
	231	kvm_userspace_memory_region *mem,
	232	int user_alloc);
	233	long kvm_arch_vm_ioctl(struct file *filp,
	234	unsigned int ioctl, unsigned long arg);
	235	void kvm_arch_destroy_vm(struct kvm *kvm);
313a3dc7	236
d0752060 HB	237	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	238	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	239
8b006791 ZX	240	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	241	struct kvm_translation *tr);
	242
b6c7a5dc HB	243	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	244	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	245	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	246	struct kvm_sregs *sregs);
	247	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	248	struct kvm_sregs *sregs);
62d9f0db MT	249	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	250	struct kvm_mp_state *mp_state);
	251	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	252	struct kvm_mp_state *mp_state);
b6c7a5dc HB	253	int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
	254	struct kvm_debug_guest *dbg);
	255	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
	256
f8c16bba ZX	257	int kvm_arch_init(void *opaque);
f8c16bba ZX	258	void kvm_arch_exit(void);
043405e1	259
e9b11c17 ZX	260	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
	261	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
	262
	263	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
	264	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	265	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
	266	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id);
26e5215f	267	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62	268	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17 ZX	269
	270	int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
	271	void kvm_arch_hardware_enable(void *garbage);
	272	void kvm_arch_hardware_disable(void *garbage);
	273	int kvm_arch_hardware_setup(void);
	274	void kvm_arch_hardware_unsetup(void);
	275	void kvm_arch_check_processor_compat(void *rtn);
1d737c8a	276	int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
e9b11c17	277
d19a9cd2 ZX	278	void kvm_free_physmem(struct kvm *kvm);
	279
	280	struct kvm *kvm_arch_create_vm(void);
	281	void kvm_arch_destroy_vm(struct kvm *kvm);
e9b11c17	282
682c59a3 ZX	283	int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
682c59a3 ZX	284	int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d	285	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	286	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	287
d172fcd3 LV	288	static inline void kvm_guest_enter(void)
d172fcd3 LV	289	{
e56a7a28	290	account_system_vtime(current);
d172fcd3 LV	291	current->flags \|= PF_VCPU;
	292	}
	293
	294	static inline void kvm_guest_exit(void)
	295	{
e56a7a28	296	account_system_vtime(current);
d172fcd3 LV	297	current->flags &= ~PF_VCPU;
	298	}
	299
6aa8b732 AK	300	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	301	{
	302	return slot - kvm->memslots;
	303	}
	304
1755fbcc AK	305	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	306	{
	307	return (gpa_t)gfn << PAGE_SHIFT;
	308	}
6aa8b732	309
2f599714	310	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	311	{
	312	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	313	}
	314
ba1389b7 AK	315	enum kvm_stat_kind {
	316	KVM_STAT_VM,
	317	KVM_STAT_VCPU,
	318	};
	319
417bc304 HB	320	struct kvm_stats_debugfs_item {
	321	const char *name;
	322	int offset;
ba1389b7	323	enum kvm_stat_kind kind;
417bc304 HB	324	struct dentry *dentry;
	325	};
	326	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	327	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d FEL	328
	329	#ifdef CONFIG_KVM_TRACE
	330	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
	331	void kvm_trace_cleanup(void);
	332	#else
	333	static inline
	334	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
	335	{
	336	return -EINVAL;
	337	}
	338	#define kvm_trace_cleanup() ((void)0)
	339	#endif
417bc304	340
e930bffe AA	341	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	342	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	343	{
	344	if (unlikely(vcpu->kvm->mmu_notifier_count))
	345	return 1;
	346	/*
	347	* Both reads happen under the mmu_lock and both values are
	348	* modified under mmu_lock, so there's no need of smb_rmb()
	349	* here in between, otherwise mmu_notifier_count should be
	350	* read before mmu_notifier_seq, see
	351	* mmu_notifier_invalidate_range_end write side.
	352	*/
	353	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	354	return 1;
	355	return 0;
	356	}
	357	#endif
	358
6aa8b732	359	#endif