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| 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¶
struct vm_area_struct * vma
user vma to map to
phys_addr_t start
start of area
unsigned long 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¶
| July 2017 | Kernel Hackers Manual 4.11 |