remap_vmalloc_range_partial (9) - Linux Manuals

remap_vmalloc_range_partial: map vmalloc pages to userspace

NAME

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)

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