remap_pfn_range (9) - Linux Manuals

remap_pfn_range: remap kernel memory to userspace

NAME

remap_pfn_range - remap kernel memory to userspace

SYNOPSIS

int remap_pfn_range(struct vm_area_struct * vma, unsigned long addr, unsigned long pfn, unsigned long size, pgprot_t prot);

ARGUMENTS

vma

user vma to map to

addr

target user address to start at

pfn

physical address of kernel memory

size

size of map area

prot

page protection flags for this mapping

NOTE

this is only safe if the mm semaphore is held when called.

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