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REMAP_PFN_RANGE(9) Memory Management in Linux REMAP_PFN_RANGE(9)

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.

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.