[git pull] misc uaccess stuff

[Al Viro]

	uaccess patches that really didn't fit anywhere else.
kvm_hv_set_msr() patch left as-is; __put_user() is by no means
final there, but that'll be dealt with along with other KVM
uaccess stuff next cycle.

The following changes since commit b44f687386875b714dae2afa768e73401e45c21c:

  drm/i915/gem: Replace user_access_begin by user_write_access_begin (2020-05-01 12:35:22 +1000)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git uaccess.misc

for you to fetch changes up to 4ec76a2b74c72ef9eed875ce63e27a5e7f8d80cc:

  bpf: make bpf_check_uarg_tail_zero() use check_zeroed_user() (2020-06-01 14:42:37 -0400)

----------------------------------------------------------------
Al Viro (9):
      pselect6() and friends: take handling the combined 6th/7th args into helper
      binfmt_elf: don't bother with __{put,copy_to}_user()
      binfmt_elf_fdpic: don't use __... uaccess primitives
      binfmt_flat: don't use __put_user()
      x86: switch cp_stat64() to unsafe_put_user()
      TEST_ACCESS_OK _never_ had been checked anywhere
      user_regset_copyout_zero(): use clear_user()
      x86: kvm_hv_set_msr(): use __put_user() instead of 32bit __clear_user()
      bpf: make bpf_check_uarg_tail_zero() use check_zeroed_user()

 arch/x86/include/asm/pgtable_32.h |   7 ---
 arch/x86/kernel/sys_ia32.c        |  40 ++++++++------
 arch/x86/kvm/hyperv.c             |   2 +-
 fs/binfmt_elf.c                   |  14 ++---
 fs/binfmt_elf_fdpic.c             |  31 +++++++----
 fs/binfmt_flat.c                  |  22 +++++---
 fs/select.c                       | 112 ++++++++++++++++++++++----------------
 include/linux/regset.h            |   2 +-
 kernel/bpf/syscall.c              |  25 ++-------
 9 files changed, 134 insertions(+), 121 deletions(-)