drivers/vfio/pci/pds/lm.h

Source file repositories/reference/linux-study-clean/drivers/vfio/pci/pds/lm.h

File Facts

System
Linux kernel
Corpus path
drivers/vfio/pci/pds/lm.h
Extension
.h
Size
1218 bytes
Lines
43
Domain
Driver Families
Bucket
drivers/vfio
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 pds_vfio_lm_file {
	struct file *filep;
	struct mutex lock;	/* protect live migration data file */
	u64 size;		/* Size with valid data */
	u64 alloc_size;		/* Total allocated size. Always >= len */
	void *page_mem;		/* memory allocated for pages */
	struct page **pages;	/* Backing pages for file */
	unsigned long long npages;
	struct sg_table sg_table;	/* SG table for backing pages */
	struct pds_lm_sg_elem *sgl;	/* DMA mapping */
	dma_addr_t sgl_addr;
	u16 num_sge;
	struct scatterlist *last_offset_sg;	/* Iterator */
	unsigned int sg_last_entry;
	unsigned long last_offset;
	bool disabled;
};

struct pds_vfio_pci_device;

struct file *
pds_vfio_step_device_state_locked(struct pds_vfio_pci_device *pds_vfio,
				  enum vfio_device_mig_state next);

void pds_vfio_put_save_file(struct pds_vfio_pci_device *pds_vfio);
void pds_vfio_put_restore_file(struct pds_vfio_pci_device *pds_vfio);

#endif /* _LM_H_ */

Annotation

Implementation Notes