[thirdparty/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 <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_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;
	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 {
	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);

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_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;
	bool host_irq_disabled;
	int guest_irq;
	struct msi_msg guest_msi;
#define KVM_ASSIGNED_DEV_GUEST_INTX	(1 << 0)
#define KVM_ASSIGNED_DEV_GUEST_MSI	(1 << 1)
#define KVM_ASSIGNED_DEV_HOST_INTX	(1 << 8)
#define KVM_ASSIGNED_DEV_HOST_MSI	(1 << 9)
	unsigned long irq_requested_type;
	int irq_source_id;
	int flags;
	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_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_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

#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
6aa8b732	40
5550af4d SY	41	#define KVM_USERSPACE_IRQ_SOURCE_ID 0
5550af4d SY	42
6aa8b732	43	struct kvm_vcpu;
c16f862d	44	extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732	45
2eeb2e94 GH	46	/*
	47	* It would be nice to use something smarter than a linear search, TBD...
	48	* Thankfully we dont expect many devices to register (famous last words :),
	49	* so until then it will suffice. At least its abstracted so we can change
	50	* in one place.
	51	*/
	52	struct kvm_io_bus {
	53	int dev_count;
	54	#define NR_IOBUS_DEVS 6
	55	struct kvm_io_device *devs[NR_IOBUS_DEVS];
	56	};
	57
	58	void kvm_io_bus_init(struct kvm_io_bus *bus);
	59	void kvm_io_bus_destroy(struct kvm_io_bus *bus);
92760499 LV	60	struct kvm_io_device kvm_io_bus_find_dev(struct kvm_io_bus bus,
92760499 LV	61	gpa_t addr, int len, int is_write);
2eeb2e94 GH	62	void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
	63	struct kvm_io_device *dev);
	64
d17fbbf7 ZX	65	struct kvm_vcpu {
d17fbbf7 ZX	66	struct kvm *kvm;
31bb117e	67	#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7	68	struct preempt_notifier preempt_notifier;
31bb117e	69	#endif
d17fbbf7 ZX	70	int vcpu_id;
	71	struct mutex mutex;
	72	int cpu;
	73	struct kvm_run *run;
	74	int guest_mode;
	75	unsigned long requests;
d0bfb940	76	unsigned long guest_debug;
d17fbbf7 ZX	77	int fpu_active;
	78	int guest_fpu_loaded;
	79	wait_queue_head_t wq;
	80	int sigset_active;
	81	sigset_t sigset;
	82	struct kvm_vcpu_stat stat;
	83
34c16eec	84	#ifdef CONFIG_HAS_IOMEM
d17fbbf7 ZX	85	int mmio_needed;
	86	int mmio_read_completed;
	87	int mmio_is_write;
	88	int mmio_size;
	89	unsigned char mmio_data[8];
6aa8b732	90	gpa_t mmio_phys_addr;
34c16eec	91	#endif
1165f5fe	92
d657a98e ZX	93	struct kvm_vcpu_arch arch;
	94	};
	95
6aa8b732 AK	96	struct kvm_memory_slot {
	97	gfn_t base_gfn;
	98	unsigned long npages;
	99	unsigned long flags;
290fc38d	100	unsigned long *rmap;
6aa8b732	101	unsigned long *dirty_bitmap;
05da4558 MT	102	struct {
	103	unsigned long rmap_pde;
	104	int write_count;
	105	} *lpage_info;
8a7ae055	106	unsigned long userspace_addr;
80b14b5b	107	int user_alloc;
6aa8b732 AK	108	};
	109
	110	struct kvm {
aaee2c94 MT	111	struct mutex lock; /* protects the vcpus array and APIC accesses */
aaee2c94 MT	112	spinlock_t mmu_lock;
72dc67a6	113	struct rw_semaphore slots_lock;
6d4e4c4f	114	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	115	int nmemslots;
e0d62c7f IE	116	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	117	KVM_PRIVATE_MEM_SLOTS];
fb3f0f51	118	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
133de902	119	struct list_head vm_list;
2eeb2e94	120	struct kvm_io_bus mmio_bus;
74906345	121	struct kvm_io_bus pio_bus;
ba1389b7	122	struct kvm_vm_stat stat;
d69fb81f	123	struct kvm_arch arch;
d39f13b0	124	atomic_t users_count;
5f94c174 LV	125	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	126	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	127	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	128	#endif
e930bffe AA	129
	130	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	131	struct mmu_notifier mmu_notifier;
	132	unsigned long mmu_notifier_seq;
	133	long mmu_notifier_count;
	134	#endif
6aa8b732 AK	135	};
6aa8b732 AK	136
f0242478 RR	137	/* The guest did something we don't support. */
	138	#define pr_unimpl(vcpu, fmt, ...) \
	139	do { \
	140	if (printk_ratelimit()) \
	141	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	142	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	143	} while (0)
f0242478	144
6aa8b732 AK	145	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	146	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	147
fb3f0f51 RR	148	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	149	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	150
313a3dc7 CO	151	void vcpu_load(struct kvm_vcpu *vcpu);
	152	void vcpu_put(struct kvm_vcpu *vcpu);
	153
f8c16bba	154	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	155	struct module *module);
cb498ea2	156	void kvm_exit(void);
6aa8b732	157
d39f13b0 IE	158	void kvm_get_kvm(struct kvm *kvm);
	159	void kvm_put_kvm(struct kvm *kvm);
	160
6aa8b732 AK	161	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	162	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	163	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	164	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	165
cea7bb21	166	extern struct page *bad_page;
35149e21	167	extern pfn_t bad_pfn;
6aa8b732	168
cea7bb21	169	int is_error_page(struct page *page);
35149e21	170	int is_error_pfn(pfn_t pfn);
f9d46eb0	171	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	172	int kvm_set_memory_region(struct kvm *kvm,
	173	struct kvm_userspace_memory_region *mem,
	174	int user_alloc);
f78e0e2e SY	175	int __kvm_set_memory_region(struct kvm *kvm,
	176	struct kvm_userspace_memory_region *mem,
	177	int user_alloc);
0de10343 ZX	178	int kvm_arch_set_memory_region(struct kvm *kvm,
	179	struct kvm_userspace_memory_region *mem,
	180	struct kvm_memory_slot old,
	181	int user_alloc);
34d4cb8f	182	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	183	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	184	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	185	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	186	void kvm_release_page_clean(struct page *page);
b4231d61 IE	187	void kvm_release_page_dirty(struct page *page);
35149e21 AL	188	void kvm_set_page_dirty(struct page *page);
	189	void kvm_set_page_accessed(struct page *page);
	190
	191	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	192	void kvm_release_pfn_dirty(pfn_t);
	193	void kvm_release_pfn_clean(pfn_t pfn);
	194	void kvm_set_pfn_dirty(pfn_t pfn);
	195	void kvm_set_pfn_accessed(pfn_t pfn);
	196	void kvm_get_pfn(pfn_t pfn);
	197
195aefde IE	198	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	199	int len);
7ec54588 MT	200	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	201	unsigned long len);
195aefde IE	202	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	203	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	204	int offset, int len);
	205	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	206	unsigned long len);
	207	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	208	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	209	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	210	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	211	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	212
8776e519	213	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	214	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	215	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	216	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	217	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	218	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	219
043405e1 CO	220	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	221	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	222	long kvm_arch_vcpu_ioctl(struct file *filp,
	223	unsigned int ioctl, unsigned long arg);
	224	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	225	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
018d00d2 ZX	226
	227	int kvm_dev_ioctl_check_extension(long ext);
	228
5bb064dc ZX	229	int kvm_get_dirty_log(struct kvm *kvm,
	230	struct kvm_dirty_log log, int is_dirty);
	231	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	232	struct kvm_dirty_log *log);
	233
1fe779f8 CO	234	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	235	struct
	236	kvm_userspace_memory_region *mem,
	237	int user_alloc);
	238	long kvm_arch_vm_ioctl(struct file *filp,
	239	unsigned int ioctl, unsigned long arg);
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);
d0bfb940 JK	257	int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
d0bfb940 JK	258	struct kvm_guest_debug *dbg);
b6c7a5dc HB	259	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
b6c7a5dc HB	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);
ad8ba2cd	287	void kvm_arch_sync_events(struct kvm *kvm);
e9b11c17	288
682c59a3 ZX	289	int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
682c59a3 ZX	290	int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d	291	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	292	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	293
c77fb9dc XZ	294	int kvm_is_mmio_pfn(pfn_t pfn);
c77fb9dc XZ	295
62c476c7 BAY	296	struct kvm_irq_ack_notifier {
	297	struct hlist_node link;
	298	unsigned gsi;
	299	void (irq_acked)(struct kvm_irq_ack_notifier kian);
	300	};
	301
	302	struct kvm_assigned_dev_kernel {
	303	struct kvm_irq_ack_notifier ack_notifier;
	304	struct work_struct interrupt_work;
	305	struct list_head list;
	306	int assigned_dev_id;
	307	int host_busnr;
	308	int host_devfn;
	309	int host_irq;
defaf158	310	bool host_irq_disabled;
62c476c7	311	int guest_irq;
0937c48d	312	struct msi_msg guest_msi;
4f906c19	313	#define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0)
0937c48d	314	#define KVM_ASSIGNED_DEV_GUEST_MSI (1 << 1)
4f906c19	315	#define KVM_ASSIGNED_DEV_HOST_INTX (1 << 8)
0937c48d	316	#define KVM_ASSIGNED_DEV_HOST_MSI (1 << 9)
4f906c19	317	unsigned long irq_requested_type;
5550af4d	318	int irq_source_id;
b653574a	319	int flags;
62c476c7 BAY	320	struct pci_dev *dev;
	321	struct kvm *kvm;
	322	};
5550af4d	323	void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
3de42dc0 XZ	324	void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi);
	325	void kvm_register_irq_ack_notifier(struct kvm *kvm,
	326	struct kvm_irq_ack_notifier *kian);
e19e30ef	327	void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
5550af4d SY	328	int kvm_request_irq_source_id(struct kvm *kvm);
5550af4d SY	329	void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7	330
19de40a8	331	#ifdef CONFIG_IOMMU_API
62c476c7 BAY	332	int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
62c476c7 BAY	333	unsigned long npages);
260782bc	334	int kvm_iommu_map_guest(struct kvm *kvm);
62c476c7	335	int kvm_iommu_unmap_guest(struct kvm *kvm);
260782bc WH	336	int kvm_assign_device(struct kvm *kvm,
260782bc WH	337	struct kvm_assigned_dev_kernel *assigned_dev);
0a920356 WH	338	int kvm_deassign_device(struct kvm *kvm,
0a920356 WH	339	struct kvm_assigned_dev_kernel *assigned_dev);
19de40a8	340	#else /* CONFIG_IOMMU_API */
62c476c7 BAY	341	static inline int kvm_iommu_map_pages(struct kvm *kvm,
	342	gfn_t base_gfn,
	343	unsigned long npages)
	344	{
	345	return 0;
	346	}
	347
260782bc	348	static inline int kvm_iommu_map_guest(struct kvm *kvm)
62c476c7 BAY	349	{
	350	return -ENODEV;
	351	}
	352
	353	static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
	354	{
	355	return 0;
	356	}
260782bc WH	357
	358	static inline int kvm_assign_device(struct kvm *kvm,
	359	struct kvm_assigned_dev_kernel *assigned_dev)
	360	{
	361	return 0;
	362	}
0a920356 WH	363
	364	static inline int kvm_deassign_device(struct kvm *kvm,
	365	struct kvm_assigned_dev_kernel *assigned_dev)
	366	{
	367	return 0;
	368	}
19de40a8	369	#endif /* CONFIG_IOMMU_API */
62c476c7	370
d172fcd3 LV	371	static inline void kvm_guest_enter(void)
d172fcd3 LV	372	{
e56a7a28	373	account_system_vtime(current);
d172fcd3 LV	374	current->flags \|= PF_VCPU;
	375	}
	376
	377	static inline void kvm_guest_exit(void)
	378	{
e56a7a28	379	account_system_vtime(current);
d172fcd3 LV	380	current->flags &= ~PF_VCPU;
	381	}
	382
6aa8b732 AK	383	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	384	{
	385	return slot - kvm->memslots;
	386	}
	387
1755fbcc AK	388	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	389	{
	390	return (gpa_t)gfn << PAGE_SHIFT;
	391	}
6aa8b732	392
62c476c7 BAY	393	static inline hpa_t pfn_to_hpa(pfn_t pfn)
	394	{
	395	return (hpa_t)pfn << PAGE_SHIFT;
	396	}
	397
2f599714	398	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	399	{
	400	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	401	}
	402
ba1389b7 AK	403	enum kvm_stat_kind {
	404	KVM_STAT_VM,
	405	KVM_STAT_VCPU,
	406	};
	407
417bc304 HB	408	struct kvm_stats_debugfs_item {
	409	const char *name;
	410	int offset;
ba1389b7	411	enum kvm_stat_kind kind;
417bc304 HB	412	struct dentry *dentry;
	413	};
	414	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	415	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d	416
d98e6346 HB	417	#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
	418	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	419	vcpu, 5, d1, d2, d3, d4, d5)
	420	#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
	421	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	422	vcpu, 4, d1, d2, d3, d4, 0)
	423	#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
	424	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	425	vcpu, 3, d1, d2, d3, 0, 0)
	426	#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
	427	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	428	vcpu, 2, d1, d2, 0, 0, 0)
	429	#define KVMTRACE_1D(evt, vcpu, d1, name) \
	430	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	431	vcpu, 1, d1, 0, 0, 0, 0)
	432	#define KVMTRACE_0D(evt, vcpu, name) \
	433	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	434	vcpu, 0, 0, 0, 0, 0, 0)
	435
d4c9ff2d FEL	436	#ifdef CONFIG_KVM_TRACE
	437	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
	438	void kvm_trace_cleanup(void);
	439	#else
	440	static inline
	441	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
	442	{
	443	return -EINVAL;
	444	}
	445	#define kvm_trace_cleanup() ((void)0)
	446	#endif
417bc304	447
e930bffe AA	448	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	449	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	450	{
	451	if (unlikely(vcpu->kvm->mmu_notifier_count))
	452	return 1;
	453	/*
	454	* Both reads happen under the mmu_lock and both values are
	455	* modified under mmu_lock, so there's no need of smb_rmb()
	456	* here in between, otherwise mmu_notifier_count should be
	457	* read before mmu_notifier_seq, see
	458	* mmu_notifier_invalidate_range_end write side.
	459	*/
	460	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	461	return 1;
	462	return 0;
	463	}
	464	#endif
	465
6aa8b732	466	#endif