[net-next-2.6.git] / include / linux / kvm_host.h

#ifndef __KVM_HOST_H
#define __KVM_HOST_H

/*
 * This work is licensed under the terms of the GNU GPL, version 2.  See
 * the COPYING file in the top-level directory.
 */

#include <linux/types.h>
#include <linux/hardirq.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/preempt.h>
#include <linux/marker.h>
#include <linux/msi.h>
#include <asm/signal.h>

#include <linux/kvm.h>
#include <linux/kvm_para.h>

#include <linux/kvm_types.h>

#include <asm/kvm_host.h>

/*
 * vcpu->requests bit members
 */
#define KVM_REQ_TLB_FLUSH          0
#define KVM_REQ_MIGRATE_TIMER      1
#define KVM_REQ_REPORT_TPR_ACCESS  2
#define KVM_REQ_MMU_RELOAD         3
#define KVM_REQ_TRIPLE_FAULT       4
#define KVM_REQ_PENDING_TIMER      5
#define KVM_REQ_UNHALT             6
#define KVM_REQ_MMU_SYNC           7
#define KVM_REQ_KVMCLOCK_UPDATE    8

#define KVM_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;
	int (*set)(struct kvm_kernel_irq_routing_entry *e,
		    struct kvm *kvm, int level);
	union {
		struct {
			unsigned irqchip;
			unsigned pin;
		} irqchip;
		struct msi_msg msi;
	};
	struct list_head link;
};

struct kvm {
	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_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
				   union kvm_ioapic_redirect_entry *entry,
				   unsigned long *deliver_bitmask);
int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
void kvm_register_irq_ack_notifier(struct kvm *kvm,
				   struct kvm_irq_ack_notifier *kian);
void kvm_unregister_irq_ack_notifier(struct kvm_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
c8076604	40	#define KVM_REQ_KVMCLOCK_UPDATE 8
6aa8b732	41
5550af4d SY	42	#define KVM_USERSPACE_IRQ_SOURCE_ID 0
5550af4d SY	43
6aa8b732	44	struct kvm_vcpu;
c16f862d	45	extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732	46
2eeb2e94 GH	47	/*
	48	* It would be nice to use something smarter than a linear search, TBD...
	49	* Thankfully we dont expect many devices to register (famous last words :),
	50	* so until then it will suffice. At least its abstracted so we can change
	51	* in one place.
	52	*/
	53	struct kvm_io_bus {
	54	int dev_count;
	55	#define NR_IOBUS_DEVS 6
	56	struct kvm_io_device *devs[NR_IOBUS_DEVS];
	57	};
	58
	59	void kvm_io_bus_init(struct kvm_io_bus *bus);
	60	void kvm_io_bus_destroy(struct kvm_io_bus *bus);
92760499 LV	61	struct kvm_io_device kvm_io_bus_find_dev(struct kvm_io_bus bus,
92760499 LV	62	gpa_t addr, int len, int is_write);
2eeb2e94 GH	63	void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
	64	struct kvm_io_device *dev);
	65
d17fbbf7 ZX	66	struct kvm_vcpu {
d17fbbf7 ZX	67	struct kvm *kvm;
31bb117e	68	#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7	69	struct preempt_notifier preempt_notifier;
31bb117e	70	#endif
d17fbbf7 ZX	71	int vcpu_id;
	72	struct mutex mutex;
	73	int cpu;
	74	struct kvm_run *run;
	75	int guest_mode;
	76	unsigned long requests;
d0bfb940	77	unsigned long guest_debug;
d17fbbf7 ZX	78	int fpu_active;
	79	int guest_fpu_loaded;
	80	wait_queue_head_t wq;
	81	int sigset_active;
	82	sigset_t sigset;
	83	struct kvm_vcpu_stat stat;
	84
34c16eec	85	#ifdef CONFIG_HAS_IOMEM
d17fbbf7 ZX	86	int mmio_needed;
	87	int mmio_read_completed;
	88	int mmio_is_write;
	89	int mmio_size;
	90	unsigned char mmio_data[8];
6aa8b732	91	gpa_t mmio_phys_addr;
34c16eec	92	#endif
1165f5fe	93
d657a98e ZX	94	struct kvm_vcpu_arch arch;
	95	};
	96
6aa8b732 AK	97	struct kvm_memory_slot {
	98	gfn_t base_gfn;
	99	unsigned long npages;
	100	unsigned long flags;
290fc38d	101	unsigned long *rmap;
6aa8b732	102	unsigned long *dirty_bitmap;
05da4558 MT	103	struct {
	104	unsigned long rmap_pde;
	105	int write_count;
	106	} *lpage_info;
8a7ae055	107	unsigned long userspace_addr;
80b14b5b	108	int user_alloc;
6aa8b732 AK	109	};
6aa8b732 AK	110
399ec807 AK	111	struct kvm_kernel_irq_routing_entry {
399ec807 AK	112	u32 gsi;
4925663a	113	int (set)(struct kvm_kernel_irq_routing_entry e,
399ec807 AK	114	struct kvm *kvm, int level);
	115	union {
	116	struct {
	117	unsigned irqchip;
	118	unsigned pin;
	119	} irqchip;
79950e10	120	struct msi_msg msi;
399ec807 AK	121	};
	122	struct list_head link;
	123	};
	124
6aa8b732	125	struct kvm {
aaee2c94 MT	126	struct mutex lock; /* protects the vcpus array and APIC accesses */
aaee2c94 MT	127	spinlock_t mmu_lock;
72dc67a6	128	struct rw_semaphore slots_lock;
6d4e4c4f	129	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	130	int nmemslots;
e0d62c7f IE	131	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	132	KVM_PRIVATE_MEM_SLOTS];
fb3f0f51	133	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
133de902	134	struct list_head vm_list;
2eeb2e94	135	struct kvm_io_bus mmio_bus;
74906345	136	struct kvm_io_bus pio_bus;
ba1389b7	137	struct kvm_vm_stat stat;
d69fb81f	138	struct kvm_arch arch;
d39f13b0	139	atomic_t users_count;
5f94c174 LV	140	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	141	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	142	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	143	#endif
e930bffe	144
75858a84	145	#ifdef CONFIG_HAVE_KVM_IRQCHIP
399ec807	146	struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
75858a84 AK	147	struct hlist_head mask_notifier_list;
	148	#endif
	149
e930bffe AA	150	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	151	struct mmu_notifier mmu_notifier;
	152	unsigned long mmu_notifier_seq;
	153	long mmu_notifier_count;
	154	#endif
6aa8b732 AK	155	};
6aa8b732 AK	156
f0242478 RR	157	/* The guest did something we don't support. */
	158	#define pr_unimpl(vcpu, fmt, ...) \
	159	do { \
	160	if (printk_ratelimit()) \
	161	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	162	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	163	} while (0)
f0242478	164
6aa8b732 AK	165	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	166	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	167
fb3f0f51 RR	168	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	169	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	170
313a3dc7 CO	171	void vcpu_load(struct kvm_vcpu *vcpu);
	172	void vcpu_put(struct kvm_vcpu *vcpu);
	173
f8c16bba	174	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	175	struct module *module);
cb498ea2	176	void kvm_exit(void);
6aa8b732	177
d39f13b0 IE	178	void kvm_get_kvm(struct kvm *kvm);
	179	void kvm_put_kvm(struct kvm *kvm);
	180
6aa8b732 AK	181	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	182	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	183	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	184	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	185
cea7bb21	186	extern struct page *bad_page;
35149e21	187	extern pfn_t bad_pfn;
6aa8b732	188
cea7bb21	189	int is_error_page(struct page *page);
35149e21	190	int is_error_pfn(pfn_t pfn);
f9d46eb0	191	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	192	int kvm_set_memory_region(struct kvm *kvm,
	193	struct kvm_userspace_memory_region *mem,
	194	int user_alloc);
f78e0e2e SY	195	int __kvm_set_memory_region(struct kvm *kvm,
	196	struct kvm_userspace_memory_region *mem,
	197	int user_alloc);
0de10343 ZX	198	int kvm_arch_set_memory_region(struct kvm *kvm,
	199	struct kvm_userspace_memory_region *mem,
	200	struct kvm_memory_slot old,
	201	int user_alloc);
34d4cb8f	202	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	203	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	204	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	205	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	206	void kvm_release_page_clean(struct page *page);
b4231d61 IE	207	void kvm_release_page_dirty(struct page *page);
35149e21 AL	208	void kvm_set_page_dirty(struct page *page);
	209	void kvm_set_page_accessed(struct page *page);
	210
	211	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	212	void kvm_release_pfn_dirty(pfn_t);
	213	void kvm_release_pfn_clean(pfn_t pfn);
	214	void kvm_set_pfn_dirty(pfn_t pfn);
	215	void kvm_set_pfn_accessed(pfn_t pfn);
	216	void kvm_get_pfn(pfn_t pfn);
	217
195aefde IE	218	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	219	int len);
7ec54588 MT	220	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	221	unsigned long len);
195aefde IE	222	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	223	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	224	int offset, int len);
	225	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	226	unsigned long len);
	227	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	228	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	229	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	230	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	231	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	232
8776e519	233	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	234	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	235	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	236	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	237	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	238	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	239
043405e1 CO	240	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	241	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	242	long kvm_arch_vcpu_ioctl(struct file *filp,
	243	unsigned int ioctl, unsigned long arg);
	244	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	245	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
018d00d2 ZX	246
	247	int kvm_dev_ioctl_check_extension(long ext);
	248
5bb064dc ZX	249	int kvm_get_dirty_log(struct kvm *kvm,
	250	struct kvm_dirty_log log, int is_dirty);
	251	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	252	struct kvm_dirty_log *log);
	253
1fe779f8 CO	254	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	255	struct
	256	kvm_userspace_memory_region *mem,
	257	int user_alloc);
	258	long kvm_arch_vm_ioctl(struct file *filp,
	259	unsigned int ioctl, unsigned long arg);
313a3dc7	260
d0752060 HB	261	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	262	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	263
8b006791 ZX	264	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	265	struct kvm_translation *tr);
	266
b6c7a5dc HB	267	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	268	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	269	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	270	struct kvm_sregs *sregs);
	271	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	272	struct kvm_sregs *sregs);
62d9f0db MT	273	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	274	struct kvm_mp_state *mp_state);
	275	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	276	struct kvm_mp_state *mp_state);
d0bfb940 JK	277	int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
d0bfb940 JK	278	struct kvm_guest_debug *dbg);
b6c7a5dc HB	279	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
b6c7a5dc HB	280
f8c16bba ZX	281	int kvm_arch_init(void *opaque);
f8c16bba ZX	282	void kvm_arch_exit(void);
043405e1	283
e9b11c17 ZX	284	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
	285	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
	286
	287	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
	288	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	289	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
	290	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id);
26e5215f	291	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62	292	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17 ZX	293
	294	int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
	295	void kvm_arch_hardware_enable(void *garbage);
	296	void kvm_arch_hardware_disable(void *garbage);
	297	int kvm_arch_hardware_setup(void);
	298	void kvm_arch_hardware_unsetup(void);
	299	void kvm_arch_check_processor_compat(void *rtn);
1d737c8a	300	int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
e9b11c17	301
d19a9cd2 ZX	302	void kvm_free_physmem(struct kvm *kvm);
	303
	304	struct kvm *kvm_arch_create_vm(void);
	305	void kvm_arch_destroy_vm(struct kvm *kvm);
8a98f664	306	void kvm_free_all_assigned_devices(struct kvm *kvm);
ad8ba2cd	307	void kvm_arch_sync_events(struct kvm *kvm);
e9b11c17	308
682c59a3 ZX	309	int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
682c59a3 ZX	310	int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d	311	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	312	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	313
c77fb9dc XZ	314	int kvm_is_mmio_pfn(pfn_t pfn);
c77fb9dc XZ	315
62c476c7 BAY	316	struct kvm_irq_ack_notifier {
	317	struct hlist_node link;
	318	unsigned gsi;
	319	void (irq_acked)(struct kvm_irq_ack_notifier kian);
	320	};
	321
	322	struct kvm_assigned_dev_kernel {
	323	struct kvm_irq_ack_notifier ack_notifier;
	324	struct work_struct interrupt_work;
	325	struct list_head list;
	326	int assigned_dev_id;
	327	int host_busnr;
	328	int host_devfn;
	329	int host_irq;
defaf158	330	bool host_irq_disabled;
62c476c7	331	int guest_irq;
4f906c19	332	#define KVM_ASSIGNED_DEV_GUEST_INTX (1 << 0)
0937c48d	333	#define KVM_ASSIGNED_DEV_GUEST_MSI (1 << 1)
4f906c19	334	#define KVM_ASSIGNED_DEV_HOST_INTX (1 << 8)
0937c48d	335	#define KVM_ASSIGNED_DEV_HOST_MSI (1 << 9)
4f906c19	336	unsigned long irq_requested_type;
5550af4d	337	int irq_source_id;
b653574a	338	int flags;
62c476c7 BAY	339	struct pci_dev *dev;
	340	struct kvm *kvm;
	341	};
75858a84 AK	342
	343	struct kvm_irq_mask_notifier {
	344	void (func)(struct kvm_irq_mask_notifier kimn, bool masked);
	345	int irq;
	346	struct hlist_node link;
	347	};
	348
	349	void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
	350	struct kvm_irq_mask_notifier *kimn);
	351	void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
	352	struct kvm_irq_mask_notifier *kimn);
	353	void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
	354
116191b6 SY	355	void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
	356	union kvm_ioapic_redirect_entry *entry,
	357	unsigned long *deliver_bitmask);
4925663a	358	int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
44882eed	359	void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
3de42dc0 XZ	360	void kvm_register_irq_ack_notifier(struct kvm *kvm,
3de42dc0 XZ	361	struct kvm_irq_ack_notifier *kian);
e19e30ef	362	void kvm_unregister_irq_ack_notifier(struct kvm_irq_ack_notifier *kian);
5550af4d SY	363	int kvm_request_irq_source_id(struct kvm *kvm);
5550af4d SY	364	void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7	365
19de40a8	366	#ifdef CONFIG_IOMMU_API
62c476c7 BAY	367	int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
62c476c7 BAY	368	unsigned long npages);
260782bc	369	int kvm_iommu_map_guest(struct kvm *kvm);
62c476c7	370	int kvm_iommu_unmap_guest(struct kvm *kvm);
260782bc WH	371	int kvm_assign_device(struct kvm *kvm,
260782bc WH	372	struct kvm_assigned_dev_kernel *assigned_dev);
0a920356 WH	373	int kvm_deassign_device(struct kvm *kvm,
0a920356 WH	374	struct kvm_assigned_dev_kernel *assigned_dev);
19de40a8	375	#else /* CONFIG_IOMMU_API */
62c476c7 BAY	376	static inline int kvm_iommu_map_pages(struct kvm *kvm,
	377	gfn_t base_gfn,
	378	unsigned long npages)
	379	{
	380	return 0;
	381	}
	382
260782bc	383	static inline int kvm_iommu_map_guest(struct kvm *kvm)
62c476c7 BAY	384	{
	385	return -ENODEV;
	386	}
	387
	388	static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
	389	{
	390	return 0;
	391	}
260782bc WH	392
	393	static inline int kvm_assign_device(struct kvm *kvm,
	394	struct kvm_assigned_dev_kernel *assigned_dev)
	395	{
	396	return 0;
	397	}
0a920356 WH	398
	399	static inline int kvm_deassign_device(struct kvm *kvm,
	400	struct kvm_assigned_dev_kernel *assigned_dev)
	401	{
	402	return 0;
	403	}
19de40a8	404	#endif /* CONFIG_IOMMU_API */
62c476c7	405
d172fcd3 LV	406	static inline void kvm_guest_enter(void)
d172fcd3 LV	407	{
e56a7a28	408	account_system_vtime(current);
d172fcd3 LV	409	current->flags \|= PF_VCPU;
	410	}
	411
	412	static inline void kvm_guest_exit(void)
	413	{
e56a7a28	414	account_system_vtime(current);
d172fcd3 LV	415	current->flags &= ~PF_VCPU;
	416	}
	417
6aa8b732 AK	418	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	419	{
	420	return slot - kvm->memslots;
	421	}
	422
1755fbcc AK	423	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	424	{
	425	return (gpa_t)gfn << PAGE_SHIFT;
	426	}
6aa8b732	427
62c476c7 BAY	428	static inline hpa_t pfn_to_hpa(pfn_t pfn)
	429	{
	430	return (hpa_t)pfn << PAGE_SHIFT;
	431	}
	432
2f599714	433	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	434	{
	435	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	436	}
	437
ba1389b7 AK	438	enum kvm_stat_kind {
	439	KVM_STAT_VM,
	440	KVM_STAT_VCPU,
	441	};
	442
417bc304 HB	443	struct kvm_stats_debugfs_item {
	444	const char *name;
	445	int offset;
ba1389b7	446	enum kvm_stat_kind kind;
417bc304 HB	447	struct dentry *dentry;
	448	};
	449	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	450	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d	451
d98e6346 HB	452	#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
	453	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	454	vcpu, 5, d1, d2, d3, d4, d5)
	455	#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
	456	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	457	vcpu, 4, d1, d2, d3, d4, 0)
	458	#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
	459	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	460	vcpu, 3, d1, d2, d3, 0, 0)
	461	#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
	462	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	463	vcpu, 2, d1, d2, 0, 0, 0)
	464	#define KVMTRACE_1D(evt, vcpu, d1, name) \
	465	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	466	vcpu, 1, d1, 0, 0, 0, 0)
	467	#define KVMTRACE_0D(evt, vcpu, name) \
	468	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	469	vcpu, 0, 0, 0, 0, 0, 0)
	470
d4c9ff2d FEL	471	#ifdef CONFIG_KVM_TRACE
	472	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
	473	void kvm_trace_cleanup(void);
	474	#else
	475	static inline
	476	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
	477	{
	478	return -EINVAL;
	479	}
	480	#define kvm_trace_cleanup() ((void)0)
	481	#endif
417bc304	482
e930bffe AA	483	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	484	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	485	{
	486	if (unlikely(vcpu->kvm->mmu_notifier_count))
	487	return 1;
	488	/*
	489	* Both reads happen under the mmu_lock and both values are
	490	* modified under mmu_lock, so there's no need of smb_rmb()
	491	* here in between, otherwise mmu_notifier_count should be
	492	* read before mmu_notifier_seq, see
	493	* mmu_notifier_invalidate_range_end write side.
	494	*/
	495	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	496	return 1;
	497	return 0;
	498	}
	499	#endif
	500
399ec807 AK	501	#ifdef CONFIG_HAVE_KVM_IRQCHIP
	502
	503	#define KVM_MAX_IRQ_ROUTES 1024
	504
	505	int kvm_setup_default_irq_routing(struct kvm *kvm);
	506	int kvm_set_irq_routing(struct kvm *kvm,
	507	const struct kvm_irq_routing_entry *entries,
	508	unsigned nr,
	509	unsigned flags);
	510	void kvm_free_irq_routing(struct kvm *kvm);
	511
	512	#else
	513
	514	static inline void kvm_free_irq_routing(struct kvm *kvm) {}
	515
	516	#endif
	517
6aa8b732	518	#endif