drivers/hv/mshv_eventfd.h

Source file repositories/reference/linux-study-clean/drivers/hv/mshv_eventfd.h

File Facts

System
Linux kernel
Corpus path
drivers/hv/mshv_eventfd.h
Extension
.h
Size
2223 bytes
Lines
71
Domain
Driver Families
Bucket
drivers/hv
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct mshv_irqfd_resampler {
	struct mshv_partition	    *rsmplr_partn;
	struct hlist_head	     rsmplr_irqfd_list;
	struct mshv_irq_ack_notifier rsmplr_notifier;
	struct hlist_node	     rsmplr_hnode;
};

struct mshv_irqfd {
	struct mshv_partition		    *irqfd_partn;
	struct eventfd_ctx		    *irqfd_eventfd_ctx;
	struct mshv_guest_irq_ent	     irqfd_girq_ent;
	seqcount_spinlock_t		     irqfd_irqe_sc;
	u32				     irqfd_irqnum;
	struct mshv_lapic_irq		     irqfd_lapic_irq;
	struct hlist_node		     irqfd_hnode;
	poll_table			     irqfd_polltbl;
	wait_queue_entry_t		     irqfd_wait;
	struct work_struct		     irqfd_shutdown;
	struct mshv_irqfd_resampler	    *irqfd_resampler;
	struct eventfd_ctx		    *irqfd_resamplefd;
	struct hlist_node		     irqfd_resampler_hnode;
};

void mshv_eventfd_init(struct mshv_partition *partition);
void mshv_eventfd_release(struct mshv_partition *partition);

void mshv_register_irq_ack_notifier(struct mshv_partition *partition,
				    struct mshv_irq_ack_notifier *mian);
void mshv_unregister_irq_ack_notifier(struct mshv_partition *partition,
				      struct mshv_irq_ack_notifier *mian);
bool mshv_notify_acked_gsi(struct mshv_partition *partition, int gsi);

int mshv_set_unset_irqfd(struct mshv_partition *partition,
			 struct mshv_user_irqfd *args);

int mshv_irqfd_wq_init(void);
void mshv_irqfd_wq_cleanup(void);

struct mshv_ioeventfd {
	struct hlist_node    iovntfd_hnode;
	u64		     iovntfd_addr;
	int		     iovntfd_length;
	struct eventfd_ctx  *iovntfd_eventfd;
	u64		     iovntfd_datamatch;
	int		     iovntfd_doorbell_id;
	bool		     iovntfd_wildcard;
};

int mshv_set_unset_ioeventfd(struct mshv_partition *pt,
			     struct mshv_user_ioeventfd *args);

#endif /* __LINUX_MSHV_EVENTFD_H */

Annotation

Implementation Notes