Alexandre Ghiti 9035bd2942 mips: use generic mmap top-down layout and brk randomization ...

mips uses a top-down layout by default that exactly fits the generic
functions, so get rid of arch specific code and use the generic version by
selecting ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT.

As ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT selects ARCH_HAS_ELF_RANDOMIZE,
use the generic version of arch_randomize_brk since it also fits.  Note
that this commit also removes the possibility for mips to have elf
randomization and no MMU: without MMU, the security added by randomization
is worth nothing.

Link: http://lkml.kernel.org/r/20190730055113.23635-14-alex@ghiti.fr
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Acked-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: James Hogan <jhogan@kernel.org>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2019-09-24 15:54:12 -07:00

..

c-octeon.c

MIPS: Delete unused flush_cache_sigtramp()

2019-02-07 12:59:45 -08:00

c-r3k.c

MIPS: Delete unused flush_cache_sigtramp()

2019-02-07 12:59:45 -08:00

c-r4k.c

MIPS: Remove unused R5432 CPU support

2019-07-23 14:33:34 -07:00

c-tx39.c

MIPS: Delete unused flush_cache_sigtramp()

2019-02-07 12:59:45 -08:00

cache.c

MIPS: remove the _dma_cache_wback_inv export

2019-06-03 16:00:08 +02:00

cerr-sb1.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30 11:26:35 -07:00

cex-gen.S

…

cex-oct.S

…

cex-sb1.S

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30 11:26:35 -07:00

context.c

MIPS: Export mm switching functions used by KVM

2019-02-05 11:44:44 -08:00

dma-noncoherent.c

dma-mapping: remove arch_dma_mmap_pgprot

2019-08-29 16:43:22 +02:00

extable.c

…

fault.c

signal: Remove the task parameter from force_sig_fault

2019-05-29 09:31:43 -05:00

highmem.c

…

hugetlbpage.c

…

init.c

MIPS: Detect bad _PFN_SHIFT values

2019-09-20 14:55:07 -07:00

ioremap.c

MIPS: Fix ioremap() RAM check

2018-07-05 14:43:21 -07:00

Makefile

MIPS: Select R3k-style TLB in Kconfig

2019-09-03 14:20:43 +01:00

mmap.c

mips: use generic mmap top-down layout and brk randomization

2019-09-24 15:54:12 -07:00

page-funcs.S

…

page.c

…

pgtable-32.c

MIPS: Add partial 32-bit huge page support

2019-07-21 14:30:05 -07:00

pgtable-64.c

…

pgtable.c

…

sc-debugfs.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

sc-ip22.c

…

sc-mips.c

MIPS: Ingenic: Fix bugs when detecting X1000's L2 cache.

2019-08-05 18:30:33 -07:00

sc-r5k.c

…

sc-rm7k.c

…

tlb-funcs.S

MIPS: Consistently declare TLB functions

2018-08-10 17:27:53 -07:00

tlb-r3k.c

MIPS: mm: Remove local_flush_tlb_mm()

2019-02-04 10:56:24 -08:00

tlb-r4k.c

MIPS: MemoryMapID (MMID) Support

2019-02-04 10:56:41 -08:00

tlbex-fault.S

…

tlbex.c

MIPS: tlbex: Remove cpu_has_local_ebase

2019-09-03 14:20:54 +01:00

uasm-micromips.c

mips: bpf: implement jitting of BPF_ALU | BPF_ARSH | BPF_X

2018-12-07 13:30:48 -08:00

uasm-mips.c

MIPS: uasm: Add div, mul and sel instructions for mipsr6

2019-03-19 15:26:06 -07:00

uasm.c

MIPS: uasm: Add div, mul and sel instructions for mipsr6

2019-03-19 15:26:06 -07:00