centos man page for phys_to_virt

PHYS_TO_VIRT(9) 					     Public Functions Provided						   PHYS_TO_VIRT(9)

NAME
       phys_to_virt - map physical address to virtual

SYNOPSIS
       void * phys_to_virt(phys_addr_t address);

ARGUMENTS
       address
	   address to remap

DESCRIPTION
       The returned virtual address is a current CPU mapping for the memory address given. It is only valid to use this function on addresses that
       have a kernel mapping

       This function does not handle bus mappings for DMA transfers. In almost all conceivable cases a device driver should not be using this
       function

AUTHORS
       Matthew Wilcox <matthew@wil.cx>
	   Author.

       Alan Cox <alan@lxorguk.ukuu.org.uk>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							   PHYS_TO_VIRT(9)