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authorYann Droneaud <ydroneaud@opteya.com>2014-11-17 23:02:19 +0000
committerWill Deacon <will.deacon@arm.com>2014-11-18 16:58:15 +0000
commitd6c763afab142a85e4770b4bc2a5f40f256d5c5d (patch)
tree73dc05e59fb194007fe3959bef23e80258222ec2 /arch/arm64/include/asm/pgalloc.h
parent7d57511d2dba03a8046c8b428dd9192a4bfc1e73 (diff)
downloadlinux-d6c763afab142a85e4770b4bc2a5f40f256d5c5d.tar.gz
arm64/mm: Remove hack in mmap randomize layout
Since commit 8a0a9bd4db63 ('random: make get_random_int() more random'), get_random_int() returns a random value for each call, so comment and hack introduced in mmap_rnd() as part of commit 1d18c47c735e ('arm64: MMU fault handling and page table management') are incorrects. Commit 1d18c47c735e seems to use the same hack introduced by commit a5adc91a4b44 ('powerpc: Ensure random space between stack and mmaps'), latter copied in commit 5a0efea09f42 ('sparc64: Sharpen address space randomization calculations.'). But both architectures were cleaned up as part of commit fa8cbaaf5a68 ('powerpc+sparc64/mm: Remove hack in mmap randomize layout') as hack is no more needed since commit 8a0a9bd4db63. So the present patch removes the comment and the hack around get_random_int() on AArch64's mmap_rnd(). Cc: David S. Miller <davem@davemloft.net> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Will Deacon <will.deacon@arm.com> Acked-by: Dan McGee <dpmcgee@gmail.com> Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/pgalloc.h')
0 files changed, 0 insertions, 0 deletions