include/linux/kvm_host.h

Source file repositories/reference/linux-study-clean/include/linux/kvm_host.h

File Facts

System
Linux kernel
Corpus path
include/linux/kvm_host.h
Extension
.h
Size
80635 bytes
Lines
2619
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct kvm_io_range {
	gpa_t addr;
	int len;
	struct kvm_io_device *dev;
};

#define NR_IOBUS_DEVS 1000

struct kvm_io_bus {
	int dev_count;
	int ioeventfd_count;
	struct rcu_head rcu;
	struct kvm_io_range range[];
};

enum kvm_bus {
	KVM_MMIO_BUS,
	KVM_PIO_BUS,
	KVM_VIRTIO_CCW_NOTIFY_BUS,
	KVM_FAST_MMIO_BUS,
	KVM_IOCSR_BUS,
	KVM_NR_BUSES
};

int kvm_io_bus_write(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
		     int len, const void *val);
int kvm_io_bus_write_cookie(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx,
			    gpa_t addr, int len, const void *val, long cookie);
int kvm_io_bus_read(struct kvm_vcpu *vcpu, enum kvm_bus bus_idx, gpa_t addr,
		    int len, void *val);
int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx, gpa_t addr,
			    int len, struct kvm_io_device *dev);
int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
			      struct kvm_io_device *dev);
struct kvm_io_device *kvm_io_bus_get_dev(struct kvm *kvm, enum kvm_bus bus_idx,
					 gpa_t addr);

#ifdef CONFIG_KVM_ASYNC_PF
struct kvm_async_pf {
	struct work_struct work;
	struct list_head link;
	struct list_head queue;
	struct kvm_vcpu *vcpu;
	gpa_t cr2_or_gpa;
	unsigned long addr;
	struct kvm_arch_async_pf arch;
	bool   wakeup_all;
	bool notpresent_injected;
};

void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
bool kvm_setup_async_pf(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa,
			unsigned long hva, struct kvm_arch_async_pf *arch);
int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
#endif

union kvm_mmu_notifier_arg {
	unsigned long attributes;
};

enum kvm_gfn_range_filter {
	KVM_FILTER_SHARED		= BIT(0),
	KVM_FILTER_PRIVATE		= BIT(1),
};

struct kvm_gfn_range {
	struct kvm_memory_slot *slot;
	gfn_t start;
	gfn_t end;
	union kvm_mmu_notifier_arg arg;
	enum kvm_gfn_range_filter attr_filter;
	bool may_block;
	bool lockless;
};
bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range);
bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range);
bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range);

enum {
	OUTSIDE_GUEST_MODE,
	IN_GUEST_MODE,
	EXITING_GUEST_MODE,
	READING_SHADOW_PAGE_TABLES,
};

struct kvm_host_map {
	/*
	 * Only valid if the 'pfn' is managed by the host kernel (i.e. There is
	 * a 'struct page' for it. When using mem= kernel parameter some memory

Annotation

Implementation Notes