linux-kernel - [PATCH 0/5] Define AT_VECTOR_SIZE

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Date:	Mon, 25 Jul 2016 16:59:49 +0100
From:	James Hogan <james.hogan@...tec.com>
To:	<linux-arch@...r.kernel.org>
CC:	<linux-kernel@...r.kernel.org>,
	James Hogan <james.hogan@...tec.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Russell King <linux@...linux.org.uk>,
	Nathan Lynch <nathan_lynch@...tor.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Chris Metcalf <cmetcalf@...lanox.com>,
	Jeff Dike <jdike@...toit.com>,
	Richard Weinberger <richard@....at>,
	<linux-mips@...ux-mips.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-s390@...r.kernel.org>,
	<user-mode-linux-devel@...ts.sourceforge.net>
Subject: [PATCH 0/5] Define AT_VECTOR_SIZE_ARCH correctly

Several architectures define ARCH_DLINFO to [sometimes] contain
NEW_AUX_ENT entries, but don't define AT_VECTOR_SIZE_ARCH with the
corresponding maximum number of NEW_AUX_ENT entries.

In practice this doesn't cause any problems as AT_VECTOR_SIZE_BASE
includes space for AT_BASE_PLATFORM which none of these arches use, but
nevertheless lets define it now and add the comment above ARCH_DLINFO as
found in several other architectures to remind future modifiers of
ARCH_DLINFO to keep AT_VECTOR_SIZE_ARCH up to date.

Arch maintainers, please take via your own trees if you're happy to do
so.

- I haven't included an update for x86/um as it doesn't follow the same
  pattern as other architectures so it is unclear to me whether it has
  the same issue.

- Build tested on MIPS, ARM & tile.

- Tested on MIPS.

James Hogan (5):
  MIPS: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
  ARM: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
  arm64: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
  s390: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
  tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO

 arch/arm/include/asm/elf.h           | 1 +
 arch/arm/include/uapi/asm/auxvec.h   | 2 ++
 arch/arm64/include/asm/elf.h         | 1 +
 arch/arm64/include/uapi/asm/auxvec.h | 2 ++
 arch/mips/include/asm/elf.h          | 1 +
 arch/mips/include/uapi/asm/auxvec.h  | 2 ++
 arch/s390/include/asm/elf.h          | 1 +
 arch/s390/include/uapi/asm/auxvec.h  | 2 ++
 arch/tile/include/asm/elf.h          | 1 +
 arch/tile/include/uapi/asm/auxvec.h  | 2 ++
 10 files changed, 15 insertions(+)

Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Russell King <linux@...linux.org.uk>
Cc: Nathan Lynch <nathan_lynch@...tor.com>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will.deacon@....com>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: Chris Metcalf <cmetcalf@...lanox.com>
Cc: Jeff Dike <jdike@...toit.com>
Cc: Richard Weinberger <richard@....at>
Cc: linux-mips@...ux-mips.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-s390@...r.kernel.org
Cc: user-mode-linux-devel@...ts.sourceforge.net
-- 
2.4.10