Anton Blanchard 9f14c42d75 powerpc: Randomise mmap start address ...

Randomise mmap start address - 8MB on 32bit and 1GB on 64bit tasks.
Until ppc32 uses the mmap.c functionality, this is ppc64 specific.

Before:

# ./test & cat /proc/${!}/maps|tail -2|head -1
f75fe000-f7fff000 rw-p f75fe000 00:00 0
f75fe000-f7fff000 rw-p f75fe000 00:00 0
f75fe000-f7fff000 rw-p f75fe000 00:00 0
f75fe000-f7fff000 rw-p f75fe000 00:00 0
f75fe000-f7fff000 rw-p f75fe000 00:00 0

After:
# ./test & cat /proc/${!}/maps|tail -2|head -1
f718b000-f7b8c000 rw-p f718b000 00:00 0
f7551000-f7f52000 rw-p f7551000 00:00 0
f6ee7000-f78e8000 rw-p f6ee7000 00:00 0
f74d4000-f7ed5000 rw-p f74d4000 00:00 0
f6e9d000-f789e000 rw-p f6e9d000 00:00 0

Similar for 64bit, but with 1GB of scatter:
# ./test & cat /proc/${!}/maps|tail -2|head -1
fffb97b5000-fffb97b6000 rw-p fffb97b5000 00:00 0
fffce9a3000-fffce9a4000 rw-p fffce9a3000 00:00 0
fffeaaf2000-fffeaaf3000 rw-p fffeaaf2000 00:00 0
fffd88ac000-fffd88ad000 rw-p fffd88ac000 00:00 0
fffbc62e000-fffbc62f000 rw-p fffbc62e000 00:00 0

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2009-02-23 15:53:07 +11:00

..

40x_mmu.c

powerpc/40x: Limit allocable DRAM during early mapping

2008-11-13 10:10:56 -05:00

44x_mmu.c

powerpc: rework 4xx PTE access and TLB miss

2008-07-09 13:36:17 -04:00

fault.c

powerpc/mm: Rework I$/D$ coherency (v3)

2009-02-11 16:00:10 +11:00

fsl_booke_mmu.c

powerpc/fsl-booke: Fix compile warning

2009-02-12 16:54:53 -06:00

gup.c

powerpc: Get USE_STRICT_MM_TYPECHECKS working again

2008-10-14 10:35:27 +11:00

hash_low_32.S

powerpc/mm: Fix _PAGE_COHERENT support on classic ppc32 HW

2009-02-11 16:07:02 +11:00

hash_low_64.S

powerpc: Free a PTE bit on ppc64 with 64K pages

2008-06-30 22:30:53 +10:00

hash_native_64.c

[POWERPC] Use 1TB segments

2007-10-12 14:05:17 +10:00

hash_utils_64.c

powerpc/mm: Reduce hashtable size when using 64kB pages

2009-02-23 10:48:58 +11:00

hugetlbpage.c

mm: report the MMU pagesize in /proc/pid/smaps

2009-01-06 15:58:58 -08:00

init_32.c

powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M

2008-12-23 15:13:29 +11:00

init_64.c

powerpc: Get USE_STRICT_MM_TYPECHECKS working again

2008-10-14 10:35:27 +11:00

Makefile

powerpc/mm: Split low level tlb invalidate for nohash processors

2008-12-21 14:21:16 +11:00

mem.c

powerpc/mm: Rework I$/D$ coherency (v3)

2009-02-11 16:00:10 +11:00

mmap.c

powerpc: Randomise mmap start address

2009-02-23 15:53:07 +11:00

mmu_context_hash32.c

powerpc/mm: Split mmu_context handling

2008-12-21 14:21:15 +11:00

mmu_context_hash64.c

powerpc/mm: Split mmu_context handling

2008-12-21 14:21:15 +11:00

mmu_context_nohash.c

powerpc/mm: Runtime allocation of mmu context maps for nohash CPUs

2008-12-21 14:21:16 +11:00

mmu_decl.h

Merge commit 'kumar/kumar-next' into next

2009-01-13 13:59:03 +11:00

numa.c

powerpc/numa: Cleanup hot_add_scn_to_nid

2009-02-23 15:53:04 +11:00

pgtable_32.c

powerpc/fsl-booke: Fix mapping functions to use phys_addr_t

2009-02-09 21:11:55 -06:00

pgtable_64.c

powerpc ioremap_prot

2008-07-24 10:47:15 -07:00

pgtable.c

powerpc/mm: Rework I$/D$ coherency (v3)

2009-02-11 16:00:10 +11:00

ppc_mmu_32.c

powerpc/mm: Fix handling of _PAGE_COHERENT in BAT setup code

2009-01-28 17:15:52 +11:00

slb_low.S

[POWERPC] vmemmap fixes to use smaller pages

2008-05-15 20:49:25 +10:00

slb.c

[POWERPC] vmemmap fixes to use smaller pages

2008-05-15 20:49:25 +10:00

slice.c

powerpc: is_hugepage_only_range() must account for both 4kB and 64kB slices

2009-01-16 16:15:16 +11:00

stab.c

powerpc: Change u64/s64 to a long long integer type

2009-01-13 14:47:59 +11:00

subpage-prot.c

[POWERPC] Provide a way to protect 4k subpages when using 64k pages

2008-01-24 10:06:01 +11:00

tlb_hash32.c

powerpc/mm: Add SMP support to no-hash TLB handling

2008-12-21 14:21:16 +11:00

tlb_hash64.c

powerpc/mm: Rename tlb_32.c and tlb_64.c to tlb_hash32.c and tlb_hash64.c

2008-12-16 15:53:30 +11:00

tlb_nohash_low.S

powerpc/44x: No need to mask MSR:CE, ME or DE in _tlbil_va on 440

2008-12-21 14:21:16 +11:00

tlb_nohash.c

powerpc: Remove the redundant _tlbil_pid at SMP case

2009-01-08 16:25:13 +11:00