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| author | Christophe Leroy <[email protected]> | 2022-04-09 17:17:36 +0000 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2022-05-05 12:11:58 +0000 |
| commit | 36e5f9ee776cb6db6ab8cb9b056076c4492b9871 (patch) | |
| tree | abac8092337b74d7588ec94fe53de4c51b1c170a /arch/powerpc/platforms/powernv/opal-memory-errors.c | |
| parent | powerpc/mm: Enable full randomisation of memory mappings (diff) | |
| download | kernel-36e5f9ee776cb6db6ab8cb9b056076c4492b9871.tar.gz kernel-36e5f9ee776cb6db6ab8cb9b056076c4492b9871.zip | |
powerpc/mm: Convert to default topdown mmap layout
Select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT and
remove arch/powerpc/mm/mmap.c
This change reuses the generic framework added by
commit 67f3977f805b ("arm64, mm: move generic mmap layout
functions to mm") without any functional change.
Comparison between powerpc implementation and the generic one:
- mmap_is_legacy() is identical.
- arch_mmap_rnd() does exactly the same allthough it's written
slightly differently.
- MIN_GAP and MAX_GAP are identical.
- mmap_base() does the same but uses STACK_RND_MASK which provides
the same values as stack_maxrandom_size().
- arch_pick_mmap_layout() is identical.
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/518f9def87d3c889d5958103e7463cf45a2f673d.1649523076.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/platforms/powernv/opal-memory-errors.c')
0 files changed, 0 insertions, 0 deletions