Merge branch 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull compat and uaccess updates from Al Viro:

 - {get,put}_compat_sigset() series

 - assorted compat ioctl stuff

 - more set_fs() elimination

 - a few more timespec64 conversions

 - several removals of pointless access_ok() in places where it was
   followed only by non-__ variants of primitives

* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits)
  coredump: call do_unlinkat directly instead of sys_unlink
  fs: expose do_unlinkat for built-in callers
  ext4: take handling of EXT4_IOC_GROUP_ADD into a helper, get rid of set_fs()
  ipmi: get rid of pointless access_ok()
  pi433: sanitize ioctl
  cxlflash: get rid of pointless access_ok()
  mtdchar: get rid of pointless access_ok()
  r128: switch compat ioctls to drm_ioctl_kernel()
  selection: get rid of field-by-field copyin
  VT_RESIZEX: get rid of field-by-field copyin
  i2c compat ioctls: move to ->compat_ioctl()
  sched_rr_get_interval(): move compat to native, get rid of set_fs()
  mips: switch to {get,put}_compat_sigset()
  sparc: switch to {get,put}_compat_sigset()
  s390: switch to {get,put}_compat_sigset()
  ppc: switch to {get,put}_compat_sigset()
  parisc: switch to {get,put}_compat_sigset()
  get_compat_sigset()
  get rid of {get,put}_compat_itimerspec()
  io_getevents: Use timespec64 to represent timeouts
  ...

diff --cc arch/mips/include/asm/compat-signal.h
Simple merge

diff --cc arch/parisc/kernel/signal.c
Simple merge

diff --cc arch/powerpc/kernel/signal_32.c
Simple merge

diff --cc arch/s390/kernel/compat_signal.c
Simple merge

diff --cc arch/sparc/kernel/signal32.c
Simple merge

diff --cc arch/sparc/kernel/sys_sparc32.c
Simple merge

diff --cc drivers/scsi/cxlflash/main.c
Simple merge

diff --cc drivers/staging/pi433/pi433_if.c
Simple merge

diff --cc drivers/tty/vt/selection.c
Simple merge

diff --cc drivers/tty/vt/vt_ioctl.c
Simple merge

diff --cc fs/aio.c
Simple merge

diff --cc fs/compat_ioctl.c
Simple merge

diff --cc fs/coredump.c
Simple merge

diff --cc fs/ext4/ioctl.c
Simple merge

diff --cc fs/namei.c
Simple merge

diff --cc fs/select.c
Simple merge

diff --cc fs/signalfd.c
Simple merge

diff --cc include/linux/compat.h
Simple merge

diff --cc kernel/sched/core.c
Simple merge

diff --cc kernel/signal.c
Simple merge

diff --cc virt/kvm/kvm_main.c
Simple merge