[linux-block.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_REQ_KICK               9

#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;
	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;
	u32 type;
	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 {
	spinlock_t mmu_lock;
	spinlock_t requests_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];
#ifdef CONFIG_KVM_APIC_ARCHITECTURE
	u32 bsp_vcpu_id;
	struct kvm_vcpu *bsp_vcpu;
#endif
	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
	atomic_t online_vcpus;
	struct list_head vm_list;
	struct mutex lock;
	struct kvm_io_bus mmio_bus;
	struct kvm_io_bus pio_bus;
#ifdef CONFIG_HAVE_KVM_EVENTFD
	struct {
		spinlock_t        lock;
		struct list_head  items;
	} irqfds;
#endif
	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

	struct mutex irq_lock;
#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)

static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
{
	smp_rmb();
	return kvm->vcpus[i];
}

#define kvm_for_each_vcpu(idx, vcpup, kvm) \
	for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
	     idx < atomic_read(&kvm->online_vcpus) && vcpup; \
	     vcpup = kvm_get_vcpu(kvm, ++idx))

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);

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);
int kvm_arch_interrupt_allowed(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);
};

#define KVM_ASSIGNED_MSIX_PENDING		0x1
struct kvm_guest_msix_entry {
	u32 vector;
	u16 entry;
	u16 flags;
};

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;
	unsigned int entries_nr;
	int host_irq;
	bool host_irq_disabled;
	struct msix_entry *host_msix_entries;
	int guest_irq;
	struct kvm_guest_msix_entry *guest_msix_entries;
	unsigned long irq_requested_type;
	int irq_source_id;
	int flags;
	struct pci_dev *dev;
	struct kvm *kvm;
	spinlock_t assigned_dev_lock;
};

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);

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 *kvm,
				   struct kvm_irq_ack_notifier *kian);
int kvm_request_irq_source_id(struct kvm *kvm);
void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);

/* For vcpu->arch.iommu_flags */
#define KVM_IOMMU_CACHE_COHERENCY	0x1

#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

#ifdef CONFIG_HAVE_KVM_EVENTFD

void kvm_irqfd_init(struct kvm *kvm);
int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
void kvm_irqfd_release(struct kvm *kvm);

#else

static inline void kvm_irqfd_init(struct kvm *kvm) {}
static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
{
	return -EINVAL;
}

static inline void kvm_irqfd_release(struct kvm *kvm) {}

#endif /* CONFIG_HAVE_KVM_EVENTFD */

#ifdef CONFIG_KVM_APIC_ARCHITECTURE
static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
{
	return vcpu->kvm->bsp_vcpu == vcpu;
}
#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
32f88400	41	#define KVM_REQ_KICK 9
6aa8b732	42
5550af4d SY	43	#define KVM_USERSPACE_IRQ_SOURCE_ID 0
5550af4d SY	44
6aa8b732	45	struct kvm_vcpu;
c16f862d	46	extern struct kmem_cache *kvm_vcpu_cache;
6aa8b732	47
2eeb2e94 GH	48	/*
	49	* It would be nice to use something smarter than a linear search, TBD...
	50	* Thankfully we dont expect many devices to register (famous last words :),
	51	* so until then it will suffice. At least its abstracted so we can change
	52	* in one place.
	53	*/
	54	struct kvm_io_bus {
	55	int dev_count;
	56	#define NR_IOBUS_DEVS 6
	57	struct kvm_io_device *devs[NR_IOBUS_DEVS];
	58	};
	59
	60	void kvm_io_bus_init(struct kvm_io_bus *bus);
	61	void kvm_io_bus_destroy(struct kvm_io_bus *bus);
92760499 LV	62	struct kvm_io_device kvm_io_bus_find_dev(struct kvm_io_bus bus,
92760499 LV	63	gpa_t addr, int len, int is_write);
2eeb2e94 GH	64	void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
	65	struct kvm_io_device *dev);
	66
d17fbbf7 ZX	67	struct kvm_vcpu {
d17fbbf7 ZX	68	struct kvm *kvm;
31bb117e	69	#ifdef CONFIG_PREEMPT_NOTIFIERS
d17fbbf7	70	struct preempt_notifier preempt_notifier;
31bb117e	71	#endif
d17fbbf7 ZX	72	int vcpu_id;
	73	struct mutex mutex;
	74	int cpu;
	75	struct kvm_run *run;
d17fbbf7	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;
5116d8f6	113	u32 type;
4925663a	114	int (set)(struct kvm_kernel_irq_routing_entry e,
399ec807 AK	115	struct kvm *kvm, int level);
	116	union {
	117	struct {
	118	unsigned irqchip;
	119	unsigned pin;
	120	} irqchip;
79950e10	121	struct msi_msg msi;
399ec807 AK	122	};
	123	struct list_head link;
	124	};
	125
6aa8b732	126	struct kvm {
aaee2c94	127	spinlock_t mmu_lock;
84261923	128	spinlock_t requests_lock;
72dc67a6	129	struct rw_semaphore slots_lock;
6d4e4c4f	130	struct mm_struct mm; / userspace tied to this vm */
6aa8b732	131	int nmemslots;
e0d62c7f IE	132	struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
e0d62c7f IE	133	KVM_PRIVATE_MEM_SLOTS];
73880c80 GN	134	#ifdef CONFIG_KVM_APIC_ARCHITECTURE
73880c80 GN	135	u32 bsp_vcpu_id;
c5af89b6	136	struct kvm_vcpu *bsp_vcpu;
73880c80	137	#endif
fb3f0f51	138	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
73880c80	139	atomic_t online_vcpus;
133de902	140	struct list_head vm_list;
60eead79	141	struct mutex lock;
2eeb2e94	142	struct kvm_io_bus mmio_bus;
74906345	143	struct kvm_io_bus pio_bus;
721eecbf GH	144	#ifdef CONFIG_HAVE_KVM_EVENTFD
	145	struct {
	146	spinlock_t lock;
	147	struct list_head items;
	148	} irqfds;
	149	#endif
ba1389b7	150	struct kvm_vm_stat stat;
d69fb81f	151	struct kvm_arch arch;
d39f13b0	152	atomic_t users_count;
5f94c174 LV	153	#ifdef KVM_COALESCED_MMIO_PAGE_OFFSET
	154	struct kvm_coalesced_mmio_dev *coalesced_mmio_dev;
	155	struct kvm_coalesced_mmio_ring *coalesced_mmio_ring;
	156	#endif
e930bffe	157
60eead79	158	struct mutex irq_lock;
75858a84	159	#ifdef CONFIG_HAVE_KVM_IRQCHIP
399ec807	160	struct list_head irq_routing; /* of kvm_kernel_irq_routing_entry */
75858a84 AK	161	struct hlist_head mask_notifier_list;
	162	#endif
	163
e930bffe AA	164	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	165	struct mmu_notifier mmu_notifier;
	166	unsigned long mmu_notifier_seq;
	167	long mmu_notifier_count;
	168	#endif
6aa8b732 AK	169	};
6aa8b732 AK	170
f0242478 RR	171	/* The guest did something we don't support. */
	172	#define pr_unimpl(vcpu, fmt, ...) \
	173	do { \
	174	if (printk_ratelimit()) \
	175	printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
	176	current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
d77c26fc	177	} while (0)
f0242478	178
6aa8b732 AK	179	#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
	180	#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
	181
988a2cae GN	182	static inline struct kvm_vcpu kvm_get_vcpu(struct kvm kvm, int i)
	183	{
	184	smp_rmb();
	185	return kvm->vcpus[i];
	186	}
	187
	188	#define kvm_for_each_vcpu(idx, vcpup, kvm) \
	189	for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
	190	idx < atomic_read(&kvm->online_vcpus) && vcpup; \
	191	vcpup = kvm_get_vcpu(kvm, ++idx))
	192
fb3f0f51 RR	193	int kvm_vcpu_init(struct kvm_vcpu vcpu, struct kvm kvm, unsigned id);
	194	void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
	195
313a3dc7 CO	196	void vcpu_load(struct kvm_vcpu *vcpu);
	197	void vcpu_put(struct kvm_vcpu *vcpu);
	198
f8c16bba	199	int kvm_init(void *opaque, unsigned int vcpu_size,
c16f862d	200	struct module *module);
cb498ea2	201	void kvm_exit(void);
6aa8b732	202
d39f13b0 IE	203	void kvm_get_kvm(struct kvm *kvm);
	204	void kvm_put_kvm(struct kvm *kvm);
	205
6aa8b732 AK	206	#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
	207	#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
	208	static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
039576c0	209	struct page gva_to_page(struct kvm_vcpu vcpu, gva_t gva);
6aa8b732	210
cea7bb21	211	extern struct page *bad_page;
35149e21	212	extern pfn_t bad_pfn;
6aa8b732	213
cea7bb21	214	int is_error_page(struct page *page);
35149e21	215	int is_error_pfn(pfn_t pfn);
f9d46eb0	216	int kvm_is_error_hva(unsigned long addr);
210c7c4d IE	217	int kvm_set_memory_region(struct kvm *kvm,
	218	struct kvm_userspace_memory_region *mem,
	219	int user_alloc);
f78e0e2e SY	220	int __kvm_set_memory_region(struct kvm *kvm,
	221	struct kvm_userspace_memory_region *mem,
	222	int user_alloc);
0de10343 ZX	223	int kvm_arch_set_memory_region(struct kvm *kvm,
	224	struct kvm_userspace_memory_region *mem,
	225	struct kvm_memory_slot old,
	226	int user_alloc);
34d4cb8f	227	void kvm_arch_flush_shadow(struct kvm *kvm);
290fc38d	228	gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
954bbbc2	229	struct page gfn_to_page(struct kvm kvm, gfn_t gfn);
05da4558	230	unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
b4231d61 IE	231	void kvm_release_page_clean(struct page *page);
b4231d61 IE	232	void kvm_release_page_dirty(struct page *page);
35149e21 AL	233	void kvm_set_page_dirty(struct page *page);
	234	void kvm_set_page_accessed(struct page *page);
	235
	236	pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
	237	void kvm_release_pfn_dirty(pfn_t);
	238	void kvm_release_pfn_clean(pfn_t pfn);
	239	void kvm_set_pfn_dirty(pfn_t pfn);
	240	void kvm_set_pfn_accessed(pfn_t pfn);
	241	void kvm_get_pfn(pfn_t pfn);
	242
195aefde IE	243	int kvm_read_guest_page(struct kvm kvm, gfn_t gfn, void data, int offset,
195aefde IE	244	int len);
7ec54588 MT	245	int kvm_read_guest_atomic(struct kvm kvm, gpa_t gpa, void data,
7ec54588 MT	246	unsigned long len);
195aefde IE	247	int kvm_read_guest(struct kvm kvm, gpa_t gpa, void data, unsigned long len);
	248	int kvm_write_guest_page(struct kvm kvm, gfn_t gfn, const void data,
	249	int offset, int len);
	250	int kvm_write_guest(struct kvm kvm, gpa_t gpa, const void data,
	251	unsigned long len);
	252	int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
	253	int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
6aa8b732	254	struct kvm_memory_slot gfn_to_memslot(struct kvm kvm, gfn_t gfn);
e0d62c7f	255	int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	256	void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
6aa8b732 AK	257
8776e519	258	void kvm_vcpu_block(struct kvm_vcpu *vcpu);
6aa8b732	259	void kvm_resched(struct kvm_vcpu *vcpu);
7702fd1f AK	260	void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
7702fd1f AK	261	void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
d9e368d6	262	void kvm_flush_remote_tlbs(struct kvm *kvm);
2e53d63a	263	void kvm_reload_remote_mmus(struct kvm *kvm);
6aa8b732	264
043405e1 CO	265	long kvm_arch_dev_ioctl(struct file *filp,
043405e1 CO	266	unsigned int ioctl, unsigned long arg);
313a3dc7 CO	267	long kvm_arch_vcpu_ioctl(struct file *filp,
313a3dc7 CO	268	unsigned int ioctl, unsigned long arg);
018d00d2 ZX	269
	270	int kvm_dev_ioctl_check_extension(long ext);
	271
5bb064dc ZX	272	int kvm_get_dirty_log(struct kvm *kvm,
	273	struct kvm_dirty_log log, int is_dirty);
	274	int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
	275	struct kvm_dirty_log *log);
	276
1fe779f8 CO	277	int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
	278	struct
	279	kvm_userspace_memory_region *mem,
	280	int user_alloc);
	281	long kvm_arch_vm_ioctl(struct file *filp,
	282	unsigned int ioctl, unsigned long arg);
313a3dc7	283
d0752060 HB	284	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	285	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu);
	286
8b006791 ZX	287	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	288	struct kvm_translation *tr);
	289
b6c7a5dc HB	290	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	291	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs);
	292	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	293	struct kvm_sregs *sregs);
	294	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	295	struct kvm_sregs *sregs);
62d9f0db MT	296	int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
	297	struct kvm_mp_state *mp_state);
	298	int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
	299	struct kvm_mp_state *mp_state);
d0bfb940 JK	300	int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
d0bfb940 JK	301	struct kvm_guest_debug *dbg);
b6c7a5dc HB	302	int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu vcpu, struct kvm_run kvm_run);
b6c7a5dc HB	303
f8c16bba ZX	304	int kvm_arch_init(void *opaque);
f8c16bba ZX	305	void kvm_arch_exit(void);
043405e1	306
e9b11c17 ZX	307	int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
	308	void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
	309
	310	void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
	311	void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
	312	void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
	313	struct kvm_vcpu kvm_arch_vcpu_create(struct kvm kvm, unsigned int id);
26e5215f	314	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
d40ccc62	315	void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
e9b11c17 ZX	316
	317	int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
	318	void kvm_arch_hardware_enable(void *garbage);
	319	void kvm_arch_hardware_disable(void *garbage);
	320	int kvm_arch_hardware_setup(void);
	321	void kvm_arch_hardware_unsetup(void);
	322	void kvm_arch_check_processor_compat(void *rtn);
1d737c8a	323	int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
78646121	324	int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
e9b11c17	325
d19a9cd2 ZX	326	void kvm_free_physmem(struct kvm *kvm);
	327
	328	struct kvm *kvm_arch_create_vm(void);
	329	void kvm_arch_destroy_vm(struct kvm *kvm);
8a98f664	330	void kvm_free_all_assigned_devices(struct kvm *kvm);
ad8ba2cd	331	void kvm_arch_sync_events(struct kvm *kvm);
e9b11c17	332
682c59a3 ZX	333	int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
682c59a3 ZX	334	int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
3d80840d	335	int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
5736199a	336	void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
682c59a3	337
c77fb9dc XZ	338	int kvm_is_mmio_pfn(pfn_t pfn);
c77fb9dc XZ	339
62c476c7 BAY	340	struct kvm_irq_ack_notifier {
	341	struct hlist_node link;
	342	unsigned gsi;
	343	void (irq_acked)(struct kvm_irq_ack_notifier kian);
	344	};
	345
2350bd1f	346	#define KVM_ASSIGNED_MSIX_PENDING 0x1
c1e01514 SY	347	struct kvm_guest_msix_entry {
	348	u32 vector;
	349	u16 entry;
	350	u16 flags;
	351	};
	352
62c476c7 BAY	353	struct kvm_assigned_dev_kernel {
	354	struct kvm_irq_ack_notifier ack_notifier;
	355	struct work_struct interrupt_work;
	356	struct list_head list;
	357	int assigned_dev_id;
	358	int host_busnr;
	359	int host_devfn;
c1e01514	360	unsigned int entries_nr;
62c476c7	361	int host_irq;
defaf158	362	bool host_irq_disabled;
c1e01514	363	struct msix_entry *host_msix_entries;
62c476c7	364	int guest_irq;
c1e01514	365	struct kvm_guest_msix_entry *guest_msix_entries;
4f906c19	366	unsigned long irq_requested_type;
5550af4d	367	int irq_source_id;
b653574a	368	int flags;
62c476c7 BAY	369	struct pci_dev *dev;
62c476c7 BAY	370	struct kvm *kvm;
547de29e	371	spinlock_t assigned_dev_lock;
62c476c7	372	};
75858a84 AK	373
	374	struct kvm_irq_mask_notifier {
	375	void (func)(struct kvm_irq_mask_notifier kimn, bool masked);
	376	int irq;
	377	struct hlist_node link;
	378	};
	379
	380	void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
	381	struct kvm_irq_mask_notifier *kimn);
	382	void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
	383	struct kvm_irq_mask_notifier *kimn);
	384	void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask);
	385
4925663a	386	int kvm_set_irq(struct kvm *kvm, int irq_source_id, int irq, int level);
44882eed	387	void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
3de42dc0 XZ	388	void kvm_register_irq_ack_notifier(struct kvm *kvm,
3de42dc0 XZ	389	struct kvm_irq_ack_notifier *kian);
fa40a821 MT	390	void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
fa40a821 MT	391	struct kvm_irq_ack_notifier *kian);
5550af4d SY	392	int kvm_request_irq_source_id(struct kvm *kvm);
5550af4d SY	393	void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
62c476c7	394
522c68c4 SY	395	/* For vcpu->arch.iommu_flags */
	396	#define KVM_IOMMU_CACHE_COHERENCY 0x1
	397
19de40a8	398	#ifdef CONFIG_IOMMU_API
62c476c7 BAY	399	int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,
62c476c7 BAY	400	unsigned long npages);
260782bc	401	int kvm_iommu_map_guest(struct kvm *kvm);
62c476c7	402	int kvm_iommu_unmap_guest(struct kvm *kvm);
260782bc WH	403	int kvm_assign_device(struct kvm *kvm,
260782bc WH	404	struct kvm_assigned_dev_kernel *assigned_dev);
0a920356 WH	405	int kvm_deassign_device(struct kvm *kvm,
0a920356 WH	406	struct kvm_assigned_dev_kernel *assigned_dev);
19de40a8	407	#else /* CONFIG_IOMMU_API */
62c476c7 BAY	408	static inline int kvm_iommu_map_pages(struct kvm *kvm,
	409	gfn_t base_gfn,
	410	unsigned long npages)
	411	{
	412	return 0;
	413	}
	414
260782bc	415	static inline int kvm_iommu_map_guest(struct kvm *kvm)
62c476c7 BAY	416	{
	417	return -ENODEV;
	418	}
	419
	420	static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
	421	{
	422	return 0;
	423	}
260782bc WH	424
	425	static inline int kvm_assign_device(struct kvm *kvm,
	426	struct kvm_assigned_dev_kernel *assigned_dev)
	427	{
	428	return 0;
	429	}
0a920356 WH	430
	431	static inline int kvm_deassign_device(struct kvm *kvm,
	432	struct kvm_assigned_dev_kernel *assigned_dev)
	433	{
	434	return 0;
	435	}
19de40a8	436	#endif /* CONFIG_IOMMU_API */
62c476c7	437
d172fcd3 LV	438	static inline void kvm_guest_enter(void)
d172fcd3 LV	439	{
e56a7a28	440	account_system_vtime(current);
d172fcd3 LV	441	current->flags \|= PF_VCPU;
	442	}
	443
	444	static inline void kvm_guest_exit(void)
	445	{
e56a7a28	446	account_system_vtime(current);
d172fcd3 LV	447	current->flags &= ~PF_VCPU;
	448	}
	449
6aa8b732 AK	450	static inline int memslot_id(struct kvm kvm, struct kvm_memory_slot slot)
	451	{
	452	return slot - kvm->memslots;
	453	}
	454
1755fbcc AK	455	static inline gpa_t gfn_to_gpa(gfn_t gfn)
	456	{
	457	return (gpa_t)gfn << PAGE_SHIFT;
	458	}
6aa8b732	459
62c476c7 BAY	460	static inline hpa_t pfn_to_hpa(pfn_t pfn)
	461	{
	462	return (hpa_t)pfn << PAGE_SHIFT;
	463	}
	464
2f599714	465	static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
2f52d58c AK	466	{
	467	set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
	468	}
	469
ba1389b7 AK	470	enum kvm_stat_kind {
	471	KVM_STAT_VM,
	472	KVM_STAT_VCPU,
	473	};
	474
417bc304 HB	475	struct kvm_stats_debugfs_item {
	476	const char *name;
	477	int offset;
ba1389b7	478	enum kvm_stat_kind kind;
417bc304 HB	479	struct dentry *dentry;
	480	};
	481	extern struct kvm_stats_debugfs_item debugfs_entries[];
76f7c879	482	extern struct dentry *kvm_debugfs_dir;
d4c9ff2d	483
d98e6346 HB	484	#define KVMTRACE_5D(evt, vcpu, d1, d2, d3, d4, d5, name) \
	485	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	486	vcpu, 5, d1, d2, d3, d4, d5)
	487	#define KVMTRACE_4D(evt, vcpu, d1, d2, d3, d4, name) \
	488	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	489	vcpu, 4, d1, d2, d3, d4, 0)
	490	#define KVMTRACE_3D(evt, vcpu, d1, d2, d3, name) \
	491	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	492	vcpu, 3, d1, d2, d3, 0, 0)
	493	#define KVMTRACE_2D(evt, vcpu, d1, d2, name) \
	494	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	495	vcpu, 2, d1, d2, 0, 0, 0)
	496	#define KVMTRACE_1D(evt, vcpu, d1, name) \
	497	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	498	vcpu, 1, d1, 0, 0, 0, 0)
	499	#define KVMTRACE_0D(evt, vcpu, name) \
	500	trace_mark(kvm_trace_##name, "%u %p %u %u %u %u %u %u", KVM_TRC_##evt, \
	501	vcpu, 0, 0, 0, 0, 0, 0)
	502
d4c9ff2d FEL	503	#ifdef CONFIG_KVM_TRACE
	504	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg);
	505	void kvm_trace_cleanup(void);
	506	#else
	507	static inline
	508	int kvm_trace_ioctl(unsigned int ioctl, unsigned long arg)
	509	{
	510	return -EINVAL;
	511	}
	512	#define kvm_trace_cleanup() ((void)0)
	513	#endif
417bc304	514
e930bffe AA	515	#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
	516	static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
	517	{
	518	if (unlikely(vcpu->kvm->mmu_notifier_count))
	519	return 1;
	520	/*
	521	* Both reads happen under the mmu_lock and both values are
	522	* modified under mmu_lock, so there's no need of smb_rmb()
	523	* here in between, otherwise mmu_notifier_count should be
	524	* read before mmu_notifier_seq, see
	525	* mmu_notifier_invalidate_range_end write side.
	526	*/
	527	if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
	528	return 1;
	529	return 0;
	530	}
	531	#endif
	532
399ec807 AK	533	#ifdef CONFIG_HAVE_KVM_IRQCHIP
	534
	535	#define KVM_MAX_IRQ_ROUTES 1024
	536
	537	int kvm_setup_default_irq_routing(struct kvm *kvm);
	538	int kvm_set_irq_routing(struct kvm *kvm,
	539	const struct kvm_irq_routing_entry *entries,
	540	unsigned nr,
	541	unsigned flags);
	542	void kvm_free_irq_routing(struct kvm *kvm);
	543
	544	#else
	545
	546	static inline void kvm_free_irq_routing(struct kvm *kvm) {}
	547
	548	#endif
	549
721eecbf GH	550	#ifdef CONFIG_HAVE_KVM_EVENTFD
	551
	552	void kvm_irqfd_init(struct kvm *kvm);
	553	int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
	554	void kvm_irqfd_release(struct kvm *kvm);
	555
	556	#else
	557
	558	static inline void kvm_irqfd_init(struct kvm *kvm) {}
	559	static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
	560	{
	561	return -EINVAL;
	562	}
	563
	564	static inline void kvm_irqfd_release(struct kvm *kvm) {}
	565
	566	#endif /* CONFIG_HAVE_KVM_EVENTFD */
	567
73880c80	568	#ifdef CONFIG_KVM_APIC_ARCHITECTURE
c5af89b6 GN	569	static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
	570	{
	571	return vcpu->kvm->bsp_vcpu == vcpu;
	572	}
6aa8b732	573	#endif
73880c80	574	#endif