table of contents
| 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¶
| April 2023 | Kernel Hackers Manual 2.6. |