[PATCHv3 0/8] powerpc/mm: refactor vDSO mapping code
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From: Dmitry Safonov <hidden>
Date: 2016-10-27 21:45:53
Also in:
linux-mm, lkml
Subsystem:
alpha port, arm port, arm64 port (aarch64 architecture), generic include/asm header files, linux for powerpc (32-bit and 64-bit), m68k architecture, memory management, memory mapping, microblaze architecture, mips, nios2 architecture, openrisc architecture, parisc architecture, qualcomm hexagon architecture, s390 architecture, sparc + ultrasparc (sparc/sparc64), superh, synopsys arc architecture, tensilica xtensa port (xtensa), the rest, user-mode linux (uml), x86 architecture (32-bit and 64-bit) · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Russell King, Catalin Marinas, Will Deacon, Arnd Bergmann, Madhavan Srinivasan, Geert Uytterhoeven, Andrew Morton, Liam R. Howlett, Lorenzo Stoakes, Michal Simek, Thomas Bogendoerfer, Dinh Nguyen, Simon Schuster, Jonas Bonn, Stefan Kristiansson, Stafford Horne, "James E.J. Bottomley", Helge Deller, Brian Cain, Heiko Carstens, Vasily Gorbik, Alexander Gordeev, "David S. Miller", Andreas Larsson, Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz, Vineet Gupta, Chris Zankel, Max Filippov, Linus Torvalds, Richard Weinberger, Anton Ivanov, Johannes Berg, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Revision v3 (2 revisions archived).
Revisions (2)
- v1
- v3 current [diff against previous]
Changes since v1, v2:
- use vdso64_pages only under CONFIG_PPC64 (32-bit build fix)
- remove arch_vma_name helper as not needed anymore,
simplify vdso_base pointer initializing in map_vdso()
Cleanup patches for vDSO on powerpc.
Originally, I wanted to add vDSO remapping on arm/aarch64 and
I decided to cleanup that part on powerpc.
I've add a hook for vm_ops for vDSO just like I did for x86,
which makes cross-arch arch_mremap hook no more needed.
Other changes - reduce exhaustive code duplication by
separating the common vdso code.
No visible to userspace changes expected.
Tested on qemu with buildroot rootfs.
Dmitry Safonov (8):
powerpc/vdso: unify return paths in setup_additional_pages
powerpc/vdso: remove unused params in vdso_do_func_patch{32,64}
powerpc/vdso: separate common code in vdso_common
powerpc/vdso: introduce init_vdso{32,64}_pagelist
powerpc/vdso: split map_vdso from arch_setup_additional_pages
powerpc/vdso: switch from legacy_special_mapping_vmops
mm: kill arch_mremap
powerpc/vdso: remove arch_vma_name
arch/alpha/include/asm/Kbuild | 1 -
arch/arc/include/asm/Kbuild | 1 -
arch/arm/include/asm/Kbuild | 1 -
arch/arm64/include/asm/Kbuild | 1 -
arch/avr32/include/asm/Kbuild | 1 -
arch/blackfin/include/asm/Kbuild | 1 -
arch/c6x/include/asm/Kbuild | 1 -
arch/cris/include/asm/Kbuild | 1 -
arch/frv/include/asm/Kbuild | 1 -
arch/h8300/include/asm/Kbuild | 1 -
arch/hexagon/include/asm/Kbuild | 1 -
arch/ia64/include/asm/Kbuild | 1 -
arch/m32r/include/asm/Kbuild | 1 -
arch/m68k/include/asm/Kbuild | 1 -
arch/metag/include/asm/Kbuild | 1 -
arch/microblaze/include/asm/Kbuild | 1 -
arch/mips/include/asm/Kbuild | 1 -
arch/mn10300/include/asm/Kbuild | 1 -
arch/nios2/include/asm/Kbuild | 1 -
arch/openrisc/include/asm/Kbuild | 1 -
arch/parisc/include/asm/Kbuild | 1 -
arch/powerpc/include/asm/mm-arch-hooks.h | 28 --
arch/powerpc/kernel/vdso.c | 502 +++++--------------------------
arch/powerpc/kernel/vdso_common.c | 248 +++++++++++++++
arch/s390/include/asm/Kbuild | 1 -
arch/score/include/asm/Kbuild | 1 -
arch/sh/include/asm/Kbuild | 1 -
arch/sparc/include/asm/Kbuild | 1 -
arch/tile/include/asm/Kbuild | 1 -
arch/um/include/asm/Kbuild | 1 -
arch/unicore32/include/asm/Kbuild | 1 -
arch/x86/include/asm/Kbuild | 1 -
arch/xtensa/include/asm/Kbuild | 1 -
include/asm-generic/mm-arch-hooks.h | 16 -
include/linux/mm-arch-hooks.h | 25 --
mm/mremap.c | 4 -
36 files changed, 324 insertions(+), 529 deletions(-)
delete mode 100644 arch/powerpc/include/asm/mm-arch-hooks.h
create mode 100644 arch/powerpc/kernel/vdso_common.c
delete mode 100644 include/asm-generic/mm-arch-hooks.h
delete mode 100644 include/linux/mm-arch-hooks.h
--
2.10.1