centos man page for vm_iomap_memory

VM_IOMAP_MEMORY(9)					    Memory Management in Linux						VM_IOMAP_MEMORY(9)

NAME
       vm_iomap_memory - remap memory to userspace

SYNOPSIS
       int vm_iomap_memory(struct vm_area_struct * vma, phys_addr_t start, unsigned long len);

ARGUMENTS
       vma
	   user vma to map to

       start
	   start of area

       len
	   size of area

DESCRIPTION
       This is a simplified io_remap_pfn_range for common driver use. The driver just needs to give us the physical memory range to be mapped,
       we'll figure out the rest from the vma information.

       NOTE! Some drivers might want to tweak vma->vm_page_prot first to get whatever write-combining details or similar.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							VM_IOMAP_MEMORY(9)