[PATCH v2 0/9] metag/usercopy: Fault handling fixes & cleanups

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This series fixes a bunch of metag user copy fault handling bugs, and
finishes with a couple of minor cleanups. Thanks to Al Viro for pointing
out some of the questionable code in the first place.

Patches 1-7 are fixes, marked for stable. Well, patch 1 isn't really a
fix but is needed by patch 4. Patch 1 and 4 have already been posted as
part of my "metag/usercopy: Support RAW_COPY_USER" series, so I'm
treating this series as a v2.

Patch 8 cleans up the layout of some of the inline assembly to make it
more readable, and patch 9 simplifies one of the fixups.

Changes in v2 (compared against "metag/usercopy: Support
RAW_COPY_USER"):
- Patch 4: Drop the ADDs to increment destination pointer in fixup code
  now that the error checking is more complete (see patch 2) (Al).

Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: linux-metag@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx

James Hogan (9):
  metag/usercopy: Drop unused macros
  metag/usercopy: Fix alignment error checking
  metag/usercopy: Add early abort to copy_to_user
  metag/usercopy: Zero rest of buffer from copy_from_user
  metag/usercopy: Set flags before ADDZ
  metag/usercopy: Fix src fixup in from user rapf loops
  metag/usercopy: Add missing fixups
  metag/usercopy: Reformat rapf loop inline asm
  metag/usercopy: Simplify rapf loop fixup corner case

 arch/metag/include/asm/uaccess.h |  15 +-
 arch/metag/lib/usercopy.c        | 452 +++++++++++---------------------
 2 files changed, 173 insertions(+), 294 deletions(-)

-- 
git-series 0.8.10
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