[PATCH v6 0/6] Disable compat cruft on ppc64le v6

From: Michal Suchanek <msuchanek@suse.de>
To: linuxppc-dev@lists.ozlabs.org
Cc: Michal Suchanek <msuchanek@suse.de>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Christophe Leroy <christophe.leroy@c-s.fr>,
	Nicholas Piggin <npiggin@gmail.com>,
	Hari Bathini <hbathini@linux.ibm.com>,
	Joel Stanley <joel@jms.id.au>,
	Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
	Firoz Khan <firoz.khan@linaro.org>,
	Breno Leitao <leitao@debian.org>,
	Russell Currey <ruscur@russell.cc>,
	Nicolai Stange <nstange@suse.de>,
	Michael Neuling <mikey@neuling.org>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Arnd Bergmann <arnd@arndb.de>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	Christian Brauner <christian@brauner.io>,
	David Howells <dhowells@redhat.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Allison Randal <allison@lohutok.net>,
	David Hildenbrand <david@redhat.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v6 0/6] Disable compat cruft on ppc64le v6
Date: Fri, 30 Aug 2019 20:57:51 +0200	[thread overview]
Message-ID: <cover.1567188299.git.msuchanek@suse.de> (raw)

Less code means less bugs so add a knob to skip the compat stuff.

This is tested on ppc64le top of

https://patchwork.ozlabs.org/cover/1153556/

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

Michal Suchanek (6):
  powerpc: make llseek 32bit-only.
  powerpc: move common register copy functions from signal_32.c to
    signal.c
  powerpc/perf: consolidate read_user_stack_32
  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

 arch/powerpc/Kconfig                     |   5 +-
 arch/powerpc/include/asm/thread_info.h   |   4 +-
 arch/powerpc/kernel/Makefile             |   7 +-
 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/syscalls/syscall.tbl |   2 +-
 arch/powerpc/kernel/vdso.c               |   5 +-
 arch/powerpc/perf/Makefile               |   5 +-
 arch/powerpc/perf/callchain.c            | 377 +----------------------
 arch/powerpc/perf/callchain.h            |  11 +
 arch/powerpc/perf/callchain_32.c         | 204 ++++++++++++
 arch/powerpc/perf/callchain_64.c         | 185 +++++++++++
 14 files changed, 564 insertions(+), 533 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

-- 
2.22.0