• Chris Metcalf's avatar
    arch/tile: finish enabling support for TILE-Gx 64-bit chip · 18aecc2b
    Chris Metcalf authored
    This support was partially present in the existing code (look for
    "__tilegx__" ifdefs) but with this change you can build a working
    kernel using the TILE-Gx toolchain and ARCH=tilegx.
    Most of these files are new, generally adding a foo_64.c file
    where previously there was just a foo_32.c file.
    The ARCH=tilegx directive redirects to arch/tile, not arch/tilegx,
    using the existing SRCARCH mechanism in the top-level Makefile.
    Changes to existing files:
    - <asm/bitops.h> and <asm/bitops_32.h> changed to factor the
      include of <asm-generic/bitops/non-atomic.h> in the common header.
    - <asm/compat.h> and arch/tile/kernel/compat.c changed to remove
      the "const" markers I had put on compat_sys_execve() when trying
      to match some recent similar changes to the non-compat execve.
      It turns out the compat version wasn't "upgraded" to use const.
    - <asm/opcode-tile_64.h> and <asm/opcode_constants_64.h> were
      previously included accidentally, with the 32-bit contents.  Now
      they have the proper 64-bit contents.
    Finally, I had to hack the existing hacky drivers/input/input-compat.h
    to add yet another "#ifdef" for INPUT_COMPAT_TEST (same as x86_64).
    Signed-off-by: default avatarChris Metcalf <cmetcalf@tilera.com>
    Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> [drivers/input]