remap_vmalloc_range_partial (9) Linux Manual Page
remap_vmalloc_range_partial – map vmalloc pages to userspace
Synopsis
int remap_vmalloc_range_partial(struct vm_area_struct *vma, unsigned long uaddr, void *kaddr, unsigned long size);Arguments
vma
-
- vma to cover
uaddr
- target user address to start at
kaddr
- virtual address of vmalloc kernel memory
size
- size of map area
Return
0 for success, -Exxx on failure
This function checks that kaddr is a valid vmalloc’ed area, and that it is big enough to cover the range starting at uaddr in vma. Will return failure if that criteria isn’t met.
Similar to remap_pfn_range (see mm/memory.c)