[PATCHv2 00/17] arm64: remove set_fs() and friends

[Mark Rutland]

Building atop Christoph's core rework [1], this series removes set_fs()
from arm64. The series can be found in arm64/set_fs-removal branch [2].

Since v1 [3]:
* Remove redundant kthread init code
* Remove vestigal bit left by v1
* Rework SDEI entry
* Comment head.S better
* Fix commit message typos

I'm expecting this to be a candidate for the next merge window, but I'm
posting this now to give plenty of time for review and comments. I've
given the series some light testing with LTP (both native and compat),
and Syzkaller, but I'd like this to sit in linux-next for a while to
soak.

Thanks,
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
[3] https://lore/kernel.org/r/20200925160722.27155-1-mark.rutland@arm.com

Mark Rutland (17):
  arm64: ensure ERET from kthread is illegal
  arm64: add C wrappers for SET_PSTATE_*()
  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: sdei: explicitly simulate PAN/UAO entry
  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
  arm64: uaccess: remove vestigal UAO support

 arch/arm64/Kconfig                   |  22 -----
 arch/arm64/include/asm/alternative.h |  59 ------------
 arch/arm64/include/asm/asm-uaccess.h |  29 ++++++
 arch/arm64/include/asm/cpucaps.h     |   2 -
 arch/arm64/include/asm/cpufeature.h  |  22 ++++-
 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      |  20 +++--
 arch/arm64/include/asm/thread_info.h |   8 +-
 arch/arm64/include/asm/uaccess.h     | 170 +++++++++++++++--------------------
 arch/arm64/kernel/armv8_deprecated.c |   4 +-
 arch/arm64/kernel/asm-offsets.c      |   3 +-
 arch/arm64/kernel/cpu_errata.c       |   4 +-
 arch/arm64/kernel/cpufeature.c       |  34 +------
 arch/arm64/kernel/entry.S            |  19 +---
 arch/arm64/kernel/head.S             |  51 ++++++-----
 arch/arm64/kernel/process.c          |  30 ++-----
 arch/arm64/kernel/sdei.c             |  22 +++--
 arch/arm64/kernel/signal.c           |   3 -
 arch/arm64/kernel/sleep.S            |   2 +-
 arch/arm64/kernel/suspend.c          |   1 -
 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 ---
 31 files changed, 235 insertions(+), 356 deletions(-)

-- 
2.11.0