From: Chris Metcalf
Date: Mon Jul 25 2016 - 17:11:44 EST

On 7/25/2016 11:59 AM, James Hogan wrote:
AT_VECTOR_SIZE_ARCH should be defined with the maximum number of
NEW_AUX_ENT entries that ARCH_DLINFO can contain, but it wasn't defined
for tile at all even though ARCH_DLINFO will contain one NEW_AUX_ENT for
the VDSO address.

This shouldn't be a problem as AT_VECTOR_SIZE_BASE includes space for
AT_BASE_PLATFORM which tile doesn't use, but 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

Fixes: 4a556f4f56da ("tile: implement gettimeofday() via vDSO")
Signed-off-by: James Hogan<james.hogan@xxxxxxxxxx>
Cc: Chris Metcalf<cmetcalf@xxxxxxxxxxxx>
arch/tile/include/asm/elf.h | 1 +
arch/tile/include/uapi/asm/auxvec.h | 2 ++
2 files changed, 3 insertions(+)

Thanks, taken into the tile tree.

I'm a little dubious that AT_VECTOR_SIZE_ARCH should be being defined
in the uapi version of auxvec.h, since I don't see why userspace should
be interested in it, but that does seem to be the current convention.
Ugh, there are even CONFIG_xxx ifdefs in the x86 and sh uapi/asm/auxvec.h ...
Maybe the define could be moved to arch/*/include/asm/elf.h?

Chris Metcalf, Mellanox Technologies