[PATCH v11 0/8] Disable compat cruft on ppc64le v11

[Michal Suchánek]

Lost some headers so will resend.

On Thu, Mar 19, 2020 at 12:52:20PM +0100, Michal Suchanek wrote:
> Less code means less bugs so add a knob to skip the compat stuff.
> 
> Changes in v2: saner CONFIG_COMPAT ifdefs
> Changes in v3:
>  - change llseek to 32bit instead of builing it unconditionally in fs
>  - clanup the makefile conditionals
>  - remove some ifdefs or convert to IS_DEFINED where possible
> Changes in v4:
>  - cleanup is_32bit_task and current_is_64bit
>  - more makefile cleanup
> Changes in v5:
>  - more current_is_64bit cleanup
>  - split off callchain.c 32bit and 64bit parts
> Changes in v6:
>  - cleanup makefile after split
>  - consolidate read_user_stack_32
>  - fix some checkpatch warnings
> Changes in v7:
>  - add back __ARCH_WANT_SYS_LLSEEK to fix build with llseek
>  - remove leftover hunk
>  - add review tags
> Changes in v8:
>  - consolidate valid_user_sp to fix it in the split callchain.c
>  - fix build errors/warnings with PPC64 !COMPAT and PPC32
> Changes in v9:
>  - remove current_is_64bit()
> Chanegs in v10:
>  - rebase, sent together with the syscall cleanup
> Changes in v11:
>  - rebase
>  - add MAINTAINERS pattern for ppc perf
> 
> Michal Suchanek (8):
>   powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro
>   powerpc: move common register copy functions from signal_32.c to
>     signal.c
>   powerpc/perf: consolidate read_user_stack_32
>   powerpc/perf: consolidate valid_user_sp
>   powerpc/64: make buildable without CONFIG_COMPAT
>   powerpc/64: Make COMPAT user-selectable disabled on littleendian by
>     default.
>   powerpc/perf: split callchain.c by bitness
>   MAINTAINERS: perf: Add pattern that matches ppc perf to the perf
>     entry.
> 
>  MAINTAINERS                            |   2 +
>  arch/powerpc/Kconfig                   |   5 +-
>  arch/powerpc/include/asm/thread_info.h |   4 +-
>  arch/powerpc/include/asm/unistd.h      |   1 +
>  arch/powerpc/kernel/Makefile           |   6 +-
>  arch/powerpc/kernel/entry_64.S         |   2 +
>  arch/powerpc/kernel/signal.c           | 144 +++++++++-
>  arch/powerpc/kernel/signal_32.c        | 140 ----------
>  arch/powerpc/kernel/syscall_64.c       |   6 +-
>  arch/powerpc/kernel/vdso.c             |   3 +-
>  arch/powerpc/perf/Makefile             |   5 +-
>  arch/powerpc/perf/callchain.c          | 356 +------------------------
>  arch/powerpc/perf/callchain.h          |  20 ++
>  arch/powerpc/perf/callchain_32.c       | 196 ++++++++++++++
>  arch/powerpc/perf/callchain_64.c       | 174 ++++++++++++
>  fs/read_write.c                        |   3 +-
>  16 files changed, 556 insertions(+), 511 deletions(-)
>  create mode 100644 arch/powerpc/perf/callchain.h
>  create mode 100644 arch/powerpc/perf/callchain_32.c
>  create mode 100644 arch/powerpc/perf/callchain_64.c
> 
> -- 
> 2.23.0
>