BMC/Intel-BMC/linux.git/include/asm-generic/pgtable-nop4d-hack.h, branch v4.13Intel OpenBMC Linux kernel source tree (mirror)https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=v4.132017-03-09T19:48:47+00:00asm-generic: introduce __ARCH_USE_5LEVEL_HACK2017-03-09T19:48:47+00:00Kirill A. Shutemovkirill.shutemov@linux.intel.com2017-03-09T14:24:04+00:00urn:sha1:30ec842660bd0d056d4a7028ac5bd4a82b113d4f
We are going to introduce <asm-generic/pgtable-nop4d.h> to provide
abstraction for properly (in opposite to 5level-fixup.h hack) folded
p4d level. The new header will be included from pgtable-nopud.h.
If an architecture uses <asm-generic/nop*d.h>, we cannot use
5level-fixup.h directly to quickly convert the architecture to 5-level
paging as it would conflict with pgtable-nop4d.h.
With this patch an architecture can define __ARCH_USE_5LEVEL_HACK before
inclusion <asm-genenric/nop*d.h> to use 5level-fixup.h.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>