[PATCH 0/5] Define AT_VECTOR_SIZE_ARCH correctly

James Hogan james.hogan at imgtec.com
Mon Jul 25 08:59:49 PDT 2016


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 at linux-mips.org>
Cc: Russell King <linux at armlinux.org.uk>
Cc: Nathan Lynch <nathan_lynch at mentor.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will.deacon at arm.com>
Cc: Martin Schwidefsky <schwidefsky at de.ibm.com>
Cc: Heiko Carstens <heiko.carstens at de.ibm.com>
Cc: Chris Metcalf <cmetcalf at mellanox.com>
Cc: Jeff Dike <jdike at addtoit.com>
Cc: Richard Weinberger <richard at nod.at>
Cc: linux-mips at linux-mips.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-s390 at vger.kernel.org
Cc: user-mode-linux-devel at lists.sourceforge.net
-- 
2.4.10




More information about the linux-arm-kernel mailing list