Kai Jiang 27a90700a4 uio: Support physical addresses >32 bits on 32-bit systems ... To support >32-bit physical addresses for UIO_MEM_PHYS type we need to extend the width of 'addr' in struct uio_mem. Numerous platforms like embedded PPC, ARM, and X86 have support for systems with larger physical address than logical. Since 'addr' may contain a physical, logical, or virtual address the easiest solution is to just change the type to 'phys_addr_t' which should always be greater than or equal to the sizeof(void *) such that it can properly hold any of the address types. For physical address we can support up to a 44-bit physical address on a typical 32-bit system as we utilize remap_pfn_range() for the mapping of the memory region and pfn's are represnted by shifting the address by the page size (typically 4k). Signed-off-by: Kai Jiang <Kai.Jiang@freescale.com> Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Hans J. Koch <hjk@hansjkoch.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>		2011-10-18 11:18:57 -07:00
..
acpi
asm-generic	mm: fix __page_to_pfn for a const struct page argument	2011-08-17 13:00:20 -07:00
crypto
drm
keys
linux	uio: Support physical addresses >32 bits on 32-bit systems	2011-10-18 11:18:57 -07:00
math-emu
media
mtd
net
pcmcia
rdma
rxrpc
scsi
sound	ASoC: omap: Update e-mail address of Jarkko Nikula	2011-08-12 11:45:10 +09:00
target
trace	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2011-08-19 10:47:07 -07:00
video
xen
Kbuild