|VM_IOMAP_MEMORY(9)||Memory Management in Linux||VM_IOMAP_MEMORY(9)|
vm_iomap_memory - remap memory to userspace
int vm_iomap_memory(struct vm_area_struct * vma, phys_addr_t start, unsigned long len);
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.
|January 2017||Kernel Hackers Manual 4.8.|