| Message ID | cover.1637570556.git.christophe.leroy@csgroup.eu (mailing list archive) |
|---|---|
| Headers | show |
| Series | Convert powerpc to default topdown mmap layout | expand |
Excerpts from Christophe Leroy's message of November 22, 2021 6:48 pm: > This series converts powerpc to default topdown mmap layout. > > powerpc provides its own arch_get_unmapped_area() only when > slices are needed, which is only for book3s/64. First part of > the series moves slices into book3s/64 specific directories > and cleans up other subarchitectures. > > Then a small modification is done to core mm to allow > powerpc to still provide its own arch_randomize_brk() > > Last part converts to default topdown mmap layout. A nice series but will clash badly with the CONFIG_HASH_MMU series of course. One will have to be rebased if they are both to be merged. Thanks, Nick
Le 24/11/2021 à 14:21, Nicholas Piggin a écrit : > Excerpts from Christophe Leroy's message of November 22, 2021 6:48 pm: >> This series converts powerpc to default topdown mmap layout. >> >> powerpc provides its own arch_get_unmapped_area() only when >> slices are needed, which is only for book3s/64. First part of >> the series moves slices into book3s/64 specific directories >> and cleans up other subarchitectures. >> >> Then a small modification is done to core mm to allow >> powerpc to still provide its own arch_randomize_brk() >> >> Last part converts to default topdown mmap layout. > > A nice series but will clash badly with the CONFIG_HASH_MMU > series of course. One will have to be rebased if they are > both to be merged. > No worry, it should be an issue. If you already forsee that series being merged soon, I can rebase my series on top of it just now. Christophe
Le 24/11/2021 à 14:40, Christophe Leroy a écrit : > > > Le 24/11/2021 à 14:21, Nicholas Piggin a écrit : >> Excerpts from Christophe Leroy's message of November 22, 2021 6:48 pm: >>> This series converts powerpc to default topdown mmap layout. >>> >>> powerpc provides its own arch_get_unmapped_area() only when >>> slices are needed, which is only for book3s/64. First part of >>> the series moves slices into book3s/64 specific directories >>> and cleans up other subarchitectures. >>> >>> Then a small modification is done to core mm to allow >>> powerpc to still provide its own arch_randomize_brk() >>> >>> Last part converts to default topdown mmap layout. >> >> A nice series but will clash badly with the CONFIG_HASH_MMU >> series of course. One will have to be rebased if they are >> both to be merged. >> > > No worry, it should be an issue. > > If you already forsee that series being merged soon, I can rebase my > series on top of it just now. > In patchwork, v3 is flagged as superseded and I can't find a v4. Do you have it somewhere ? Christophe
This series converts powerpc to default topdown mmap layout. powerpc provides its own arch_get_unmapped_area() only when slices are needed, which is only for book3s/64. First part of the series moves slices into book3s/64 specific directories and cleans up other subarchitectures. Then a small modification is done to core mm to allow powerpc to still provide its own arch_randomize_brk() Last part converts to default topdown mmap layout. Christophe Leroy (8): powerpc/mm: Make slice specific to book3s/64 powerpc/mm: Remove CONFIG_PPC_MM_SLICES powerpc/mm: Remove asm/slice.h powerpc/mm: Move vma_mmu_pagesize() and hugetlb_get_unmapped_area() to slice.c powerpc/mm: Call radix__arch_get_unmapped_area() from arch_get_unmapped_area() mm: Allow arch specific arch_randomize_brk() with CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT powerpc/mm: Convert to default topdown mmap layout powerpc/mm: Properly randomise mmap with slices arch/Kconfig | 1 - arch/powerpc/Kconfig | 1 + arch/powerpc/include/asm/book3s/64/hash.h | 5 +- arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 + arch/powerpc/include/asm/book3s/64/slice.h | 18 ++ arch/powerpc/include/asm/hugetlb.h | 2 +- arch/powerpc/include/asm/paca.h | 5 - arch/powerpc/include/asm/page.h | 1 - arch/powerpc/include/asm/processor.h | 2 - arch/powerpc/include/asm/slice.h | 46 ---- arch/powerpc/kernel/paca.c | 5 - arch/powerpc/mm/Makefile | 3 +- arch/powerpc/mm/book3s64/Makefile | 2 +- arch/powerpc/mm/book3s64/hash_utils.c | 14 -- arch/powerpc/mm/{ => book3s64}/slice.c | 144 ++++++++++- arch/powerpc/mm/hugetlbpage.c | 28 --- arch/powerpc/mm/mmap.c | 228 ------------------ arch/powerpc/mm/nohash/mmu_context.c | 2 - arch/powerpc/mm/nohash/tlb.c | 4 - arch/powerpc/platforms/Kconfig.cputype | 4 - fs/binfmt_elf.c | 3 +- include/linux/elf-randomize.h | 3 +- mm/util.c | 2 + 23 files changed, 165 insertions(+), 359 deletions(-) delete mode 100644 arch/powerpc/include/asm/slice.h rename arch/powerpc/mm/{ => book3s64}/slice.c (84%) delete mode 100644 arch/powerpc/mm/mmap.c