[PATCH 00/13] arm64: remove set_fs() and friends

[Mark Rutland]

This series removes set_fs() from arm64, building atop the core rework
done by Christophe. The series can be found in my arm64/set_fs-removal
branch [2].

The bulk of the rework is to address the way we manipulate PAN and UAO,
which is largely rendered redundant.

The kernel maccess routines (__{get,put}_kernel_nofault) are trivial
wrappers which share code with the uaccess routines, so I expect these
should just work, but they'll need testing in-context, especially where
they're wrapped by the gerneric copy routines.

So far this has seen some very basic boot testing. I intend to throw
Syzkaller and LTP at this soon.

Mark.

[1] git://git.infradead.org/users/hch/misc.git set_fs-removal
[2] git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/set_fs-removal

Mark Rutland (13):
  arm64: head.S: rename el2_setup -> init_kernel_el
  arm64: head.S: cleanup SCTLR_ELx initialization
  arm64: head.S: always initialize PSTATE
  arm64: sdei: move uaccess logic to arch/arm64/
  arm64: uaccess: move uao_* alternatives to asm-uaccess.h
  arm64: uaccess: rename privileged uaccess routines
  arm64: uaccess: simplify __copy_user_flushcache()
  arm64: uaccess: refactor __{get,put}_user
  arm64: uaccess: split user/kernel routines
  arm64: uaccess cleanup macro naming
  arm64: uaccess: remove set_fs()
  arm64: uaccess: remove addr_limit_user_check()
  arm64: uaccess: remove redundant PAN toggling

 arch/arm64/Kconfig                   |   1 -
 arch/arm64/include/asm/alternative.h |  59 ------------
 arch/arm64/include/asm/asm-uaccess.h |  29 ++++++
 arch/arm64/include/asm/cpucaps.h     |   1 -
 arch/arm64/include/asm/exec.h        |   1 -
 arch/arm64/include/asm/futex.h       |   8 +-
 arch/arm64/include/asm/processor.h   |   4 +-
 arch/arm64/include/asm/ptrace.h      |   8 +-
 arch/arm64/include/asm/sysreg.h      |  16 +++-
 arch/arm64/include/asm/thread_info.h |   8 +-
 arch/arm64/include/asm/uaccess.h     | 180 ++++++++++++++---------------------
 arch/arm64/kernel/armv8_deprecated.c |   4 +-
 arch/arm64/kernel/asm-offsets.c      |   3 +-
 arch/arm64/kernel/cpufeature.c       |  11 ---
 arch/arm64/kernel/entry.S            |  19 +---
 arch/arm64/kernel/head.S             |  46 +++++----
 arch/arm64/kernel/process.c          |  12 ---
 arch/arm64/kernel/sdei.c             |  12 +--
 arch/arm64/kernel/signal.c           |   3 -
 arch/arm64/kernel/sleep.S            |   2 +-
 arch/arm64/kernel/suspend.c          |   3 +-
 arch/arm64/lib/clear_user.S          |   8 +-
 arch/arm64/lib/copy_from_user.S      |   8 +-
 arch/arm64/lib/copy_in_user.S        |  16 ++--
 arch/arm64/lib/copy_to_user.S        |   8 +-
 arch/arm64/lib/uaccess_flushcache.c  |   4 +-
 arch/arm64/mm/fault.c                |   5 -
 arch/arm64/mm/proc.S                 |   2 +-
 drivers/firmware/arm_sdei.c          |  14 ---
 29 files changed, 189 insertions(+), 306 deletions(-)

-- 
2.11.0