[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 <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_kernel_irq_routing_entry {
	u32 gsi;
	void (*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 {
	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 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);
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;
#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;
};

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);

void 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_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

#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

#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	};
6aa8b732 AK	109
399ec807 AK	110	struct kvm_kernel_irq_routing_entry {
	111	u32 gsi;
	112	void (set)(struct kvm_kernel_irq_routing_entry e,
	113	struct kvm *kvm, int level);
	114	union {
	115	struct {
	116	unsigned irqchip;
	117	unsigned pin;
	118	} irqchip;
79950e10	119	struct msi_msg msi;
399ec807 AK	120	};
	121	struct list_head link;
	122	};
	123
6aa8b732	124	struct kvm {
aaee2c94 MT	125	struct mutex lock; /* protects the vcpus array and APIC accesses */
aaee2c94 MT	126	spinlock_t mmu_lock;
72dc67a6	127	struct rw_semaphore slots_lock;
6d4e4c4f	128	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	129	int nmemslots;
e0d62c7f IE	130	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	131	KVM_PRIVATE_MEM_SLOTS];
fb3f0f51	132	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
133de902	133	struct list_head vm_list;
2eeb2e94	134	struct kvm_io_bus mmio_bus;
74906345	135	struct kvm_io_bus pio_bus;
ba1389b7	136	struct kvm_vm_stat stat;
d69fb81f	137	struct kvm_arch arch;
d39f13b0	138	atomic_t users_count;
5f94c174 LV	139	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	140	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	141	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	142	#endif
e930bffe	143
75858a84	144	#ifdef CONFIG_HAVE_KVM_IRQCHIP
399ec807	145	struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
75858a84 AK	146	struct hlist_head mask_notifier_list;
	147	#endif
	148
e930bffe AA	149	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	150	struct mmu_notifier mmu_notifier;
	151	unsigned long mmu_notifier_seq;
	152	long mmu_notifier_count;
	153	#endif
6aa8b732 AK	154	};
6aa8b732 AK	155
f0242478 RR	156	/* The guest did something we don't support. */
	157	#define pr_unimpl(vcpu, fmt, ...) \
	158	do { \
	159	if (printk_ratelimit()) \
	160	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	161	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	162	} while (0)
f0242478	163
6aa8b732 AK	164	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	165	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	166
fb3f0f51 RR	167	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	168	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	169
313a3dc7 CO	170	void vcpu_load(struct kvm_vcpu *vcpu);
	171	void vcpu_put(struct kvm_vcpu *vcpu);
	172
f8c16bba	173	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	174	struct module *module);
cb498ea2	175	void kvm_exit(void);
6aa8b732	176
d39f13b0 IE	177	void kvm_get_kvm(struct kvm *kvm);
	178	void kvm_put_kvm(struct kvm *kvm);
	179
6aa8b732 AK	180	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	181	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	182	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	183	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	184
cea7bb21	185	extern struct page *bad_page;
35149e21	186	extern pfn_t bad_pfn;
6aa8b732	187
cea7bb21	188	int is_error_page(struct page *page);
35149e21	189	int is_error_pfn(pfn_t pfn);
f9d46eb0	190	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	191	int kvm_set_memory_region(struct kvm *kvm,
	192	struct kvm_userspace_memory_region *mem,
	193	int user_alloc);
f78e0e2e SY	194	int __kvm_set_memory_region(struct kvm *kvm,
	195	struct kvm_userspace_memory_region *mem,
	196	int user_alloc);
0de10343 ZX	197	int kvm_arch_set_memory_region(struct kvm *kvm,
	198	struct kvm_userspace_memory_region *mem,
	199	struct kvm_memory_slot old,
	200	int user_alloc);
34d4cb8f	201	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	202	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	203	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	204	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	205	void kvm_release_page_clean(struct page *page);
b4231d61 IE	206	void kvm_release_page_dirty(struct page *page);
35149e21 AL	207	void kvm_set_page_dirty(struct page *page);
	208	void kvm_set_page_accessed(struct page *page);
	209
	210	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	211	void kvm_release_pfn_dirty(pfn_t);
	212	void kvm_release_pfn_clean(pfn_t pfn);
	213	void kvm_set_pfn_dirty(pfn_t pfn);
	214	void kvm_set_pfn_accessed(pfn_t pfn);
	215	void kvm_get_pfn(pfn_t pfn);
	216
195aefde IE	217	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	218	int len);
7ec54588 MT	219	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	220	unsigned long len);
195aefde IE	221	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	222	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	223	int offset, int len);
	224	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	225	unsigned long len);
	226	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	227	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	228	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	229	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	230	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	231
8776e519	232	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	233	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	234	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	235	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	236	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	237	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	238
043405e1 CO	239	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	240	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	241	long kvm_arch_vcpu_ioctl(struct file *filp,
	242	unsigned int ioctl, unsigned long arg);
	243	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	244	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
018d00d2 ZX	245
	246	int kvm_dev_ioctl_check_extension(long ext);
	247
5bb064dc ZX	248	int kvm_get_dirty_log(struct kvm *kvm,
	249	struct kvm_dirty_log log, int is_dirty);
	250	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	251	struct kvm_dirty_log *log);
	252
1fe779f8 CO	253	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	254	struct
	255	kvm_userspace_memory_region *mem,
	256	int user_alloc);
	257	long kvm_arch_vm_ioctl(struct file *filp,
	258	unsigned int ioctl, unsigned long arg);
313a3dc7	259
d0752060 HB	260	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	261	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	262
8b006791 ZX	263	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	264	struct kvm_translation *tr);
	265
b6c7a5dc HB	266	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	267	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	268	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	269	struct kvm_sregs *sregs);
	270	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	271	struct kvm_sregs *sregs);
62d9f0db MT	272	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	273	struct kvm_mp_state *mp_state);
	274	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	275	struct kvm_mp_state *mp_state);
d0bfb940 JK	276	int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
d0bfb940 JK	277	struct kvm_guest_debug *dbg);
b6c7a5dc HB	278	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
b6c7a5dc HB	279
f8c16bba ZX	280	int kvm_arch_init(void *opaque);
f8c16bba ZX	281	void kvm_arch_exit(void);
043405e1	282
e9b11c17 ZX	283	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
	284	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
	285
	286	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
	287	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	288	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
	289	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id);
26e5215f	290	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62	291	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17 ZX	292
	293	int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
	294	void kvm_arch_hardware_enable(void *garbage);
	295	void kvm_arch_hardware_disable(void *garbage);
	296	int kvm_arch_hardware_setup(void);
	297	void kvm_arch_hardware_unsetup(void);
	298	void kvm_arch_check_processor_compat(void *rtn);
1d737c8a	299	int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
e9b11c17	300
d19a9cd2 ZX	301	void kvm_free_physmem(struct kvm *kvm);
	302
	303	struct kvm *kvm_arch_create_vm(void);
	304	void kvm_arch_destroy_vm(struct kvm *kvm);
8a98f664	305	void kvm_free_all_assigned_devices(struct kvm *kvm);
ad8ba2cd	306	void kvm_arch_sync_events(struct kvm *kvm);
e9b11c17	307
682c59a3 ZX	308	int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
682c59a3 ZX	309	int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d	310	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	311	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	312
c77fb9dc XZ	313	int kvm_is_mmio_pfn(pfn_t pfn);
c77fb9dc XZ	314
62c476c7 BAY	315	struct kvm_irq_ack_notifier {
	316	struct hlist_node link;
	317	unsigned gsi;
	318	void (irq_acked)(struct kvm_irq_ack_notifier kian);
	319	};
	320
	321	struct kvm_assigned_dev_kernel {
	322	struct kvm_irq_ack_notifier ack_notifier;
	323	struct work_struct interrupt_work;
	324	struct list_head list;
	325	int assigned_dev_id;
	326	int host_busnr;
	327	int host_devfn;
	328	int host_irq;
defaf158	329	bool host_irq_disabled;
62c476c7	330	int guest_irq;
4f906c19	331	#define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0)
0937c48d	332	#define KVM_ASSIGNED_DEV_GUEST_MSI (1 << 1)
4f906c19	333	#define KVM_ASSIGNED_DEV_HOST_INTX (1 << 8)
0937c48d	334	#define KVM_ASSIGNED_DEV_HOST_MSI (1 << 9)
4f906c19	335	unsigned long irq_requested_type;
5550af4d	336	int irq_source_id;
b653574a	337	int flags;
62c476c7 BAY	338	struct pci_dev *dev;
	339	struct kvm *kvm;
	340	};
75858a84 AK	341
	342	struct kvm_irq_mask_notifier {
	343	void (func)(struct kvm_irq_mask_notifier kimn, bool masked);
	344	int irq;
	345	struct hlist_node link;
	346	};
	347
	348	void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
	349	struct kvm_irq_mask_notifier *kimn);
	350	void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
	351	struct kvm_irq_mask_notifier *kimn);
	352	void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
	353
5550af4d	354	void kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
44882eed	355	void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
3de42dc0 XZ	356	void kvm_register_irq_ack_notifier(struct kvm *kvm,
3de42dc0 XZ	357	struct kvm_irq_ack_notifier *kian);
e19e30ef	358	void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
5550af4d SY	359	int kvm_request_irq_source_id(struct kvm *kvm);
5550af4d SY	360	void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7	361
19de40a8	362	#ifdef CONFIG_IOMMU_API
62c476c7 BAY	363	int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
62c476c7 BAY	364	unsigned long npages);
260782bc	365	int kvm_iommu_map_guest(struct kvm *kvm);
62c476c7	366	int kvm_iommu_unmap_guest(struct kvm *kvm);
260782bc WH	367	int kvm_assign_device(struct kvm *kvm,
260782bc WH	368	struct kvm_assigned_dev_kernel *assigned_dev);
0a920356 WH	369	int kvm_deassign_device(struct kvm *kvm,
0a920356 WH	370	struct kvm_assigned_dev_kernel *assigned_dev);
19de40a8	371	#else /* CONFIG_IOMMU_API */
62c476c7 BAY	372	static inline int kvm_iommu_map_pages(struct kvm *kvm,
	373	gfn_t base_gfn,
	374	unsigned long npages)
	375	{
	376	return 0;
	377	}
	378
260782bc	379	static inline int kvm_iommu_map_guest(struct kvm *kvm)
62c476c7 BAY	380	{
	381	return -ENODEV;
	382	}
	383
	384	static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
	385	{
	386	return 0;
	387	}
260782bc WH	388
	389	static inline int kvm_assign_device(struct kvm *kvm,
	390	struct kvm_assigned_dev_kernel *assigned_dev)
	391	{
	392	return 0;
	393	}
0a920356 WH	394
	395	static inline int kvm_deassign_device(struct kvm *kvm,
	396	struct kvm_assigned_dev_kernel *assigned_dev)
	397	{
	398	return 0;
	399	}
19de40a8	400	#endif /* CONFIG_IOMMU_API */
62c476c7	401
d172fcd3 LV	402	static inline void kvm_guest_enter(void)
d172fcd3 LV	403	{
e56a7a28	404	account_system_vtime(current);
d172fcd3 LV	405	current->flags \|= PF_VCPU;
	406	}
	407
	408	static inline void kvm_guest_exit(void)
	409	{
e56a7a28	410	account_system_vtime(current);
d172fcd3 LV	411	current->flags &= ~PF_VCPU;
	412	}
	413
6aa8b732 AK	414	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	415	{
	416	return slot - kvm->memslots;
	417	}
	418
1755fbcc AK	419	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	420	{
	421	return (gpa_t)gfn << PAGE_SHIFT;
	422	}
6aa8b732	423
62c476c7 BAY	424	static inline hpa_t pfn_to_hpa(pfn_t pfn)
	425	{
	426	return (hpa_t)pfn << PAGE_SHIFT;
	427	}
	428
2f599714	429	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	430	{
	431	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	432	}
	433
ba1389b7 AK	434	enum kvm_stat_kind {
	435	KVM_STAT_VM,
	436	KVM_STAT_VCPU,
	437	};
	438
417bc304 HB	439	struct kvm_stats_debugfs_item {
	440	const char *name;
	441	int offset;
ba1389b7	442	enum kvm_stat_kind kind;
417bc304 HB	443	struct dentry *dentry;
	444	};
	445	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	446	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d	447
d98e6346 HB	448	#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
	449	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	450	vcpu, 5, d1, d2, d3, d4, d5)
	451	#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
	452	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	453	vcpu, 4, d1, d2, d3, d4, 0)
	454	#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
	455	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	456	vcpu, 3, d1, d2, d3, 0, 0)
	457	#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
	458	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	459	vcpu, 2, d1, d2, 0, 0, 0)
	460	#define KVMTRACE_1D(evt, vcpu, d1, name) \
	461	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	462	vcpu, 1, d1, 0, 0, 0, 0)
	463	#define KVMTRACE_0D(evt, vcpu, name) \
	464	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	465	vcpu, 0, 0, 0, 0, 0, 0)
	466
d4c9ff2d FEL	467	#ifdef CONFIG_KVM_TRACE
	468	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
	469	void kvm_trace_cleanup(void);
	470	#else
	471	static inline
	472	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
	473	{
	474	return -EINVAL;
	475	}
	476	#define kvm_trace_cleanup() ((void)0)
	477	#endif
417bc304	478
e930bffe AA	479	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	480	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	481	{
	482	if (unlikely(vcpu->kvm->mmu_notifier_count))
	483	return 1;
	484	/*
	485	* Both reads happen under the mmu_lock and both values are
	486	* modified under mmu_lock, so there's no need of smb_rmb()
	487	* here in between, otherwise mmu_notifier_count should be
	488	* read before mmu_notifier_seq, see
	489	* mmu_notifier_invalidate_range_end write side.
	490	*/
	491	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	492	return 1;
	493	return 0;
	494	}
	495	#endif
	496
399ec807 AK	497	#ifdef CONFIG_HAVE_KVM_IRQCHIP
	498
	499	#define KVM_MAX_IRQ_ROUTES 1024
	500
	501	int kvm_setup_default_irq_routing(struct kvm *kvm);
	502	int kvm_set_irq_routing(struct kvm *kvm,
	503	const struct kvm_irq_routing_entry *entries,
	504	unsigned nr,
	505	unsigned flags);
	506	void kvm_free_irq_routing(struct kvm *kvm);
	507
	508	#else
	509
	510	static inline void kvm_free_irq_routing(struct kvm *kvm) {}
	511
	512	#endif
	513
6aa8b732	514	#endif