commit 7aba842f08bb9e8485ff40067dc090ada4c7f575
author Heiko Carstens <heiko.carstens@de.ibm.com> Tue Nov 12 15:07:55 2013 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> Wed Nov 13 12:09:08 2013 +0900
tree ce123c31ecd534df33925b0b9861ead2df75c209
parent 4e99b02131b280b064d30a5926ef1c4763f3097b

s390/mmap: randomize mmap base for bottom up direction

Implement mmap base randomization for the bottom up direction, so ASLR
works for both mmap layouts on s390.  See also commit df54d6fa5427 ("x86
get_unmapped_area(): use proper mmap base for bottom-up direction").

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Radu Caragea <sinaelgl@gmail.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>