Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull second round of s390 updates from Martin Schwidefsky:

 - rework of the vdso code to avoid the use of the access register mode

 - use perf AUX buffers for the transport of diagnostic sample data

 - add perf_regs and user stack dump support

 - enable perf call graphs for user space programs

 - add perf register support for floating-point registers

 - all remaining s390 related timer_setup conversions

 - bug fixes and cleanups

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (30 commits)
  s390: remove unused parameter from Makefile
  zfcp: purely mechanical update using timer API, plus blank lines
  s390/scsi: Convert timers to use timer_setup()
  s390/cpum_sf: correctly set the PID and TID in perf samples
  s390/cpum_sf: load program parameter at sampler enablement
  s390/perf: add perf register support for floating-point registers
  s390/perf: extend perf_regs support to include floating-point registers
  s390/perf: define common DWARF register string table
  s390/perf: add support for perf_regs and libdw
  s390/perf: add perf_regs support and user stack dump
  s390/cpum_sf: do not register PMU if no sampling mode is authorized
  s390/cpumf: remove raw event support in basic-only sampling mode
  s390/perf: add callback to perf to enable using AUX buffer
  s390/cpumf: enable using AUX buffer
  s390/cpumf: introduce AUX buffer for dump diagnostic sample data
  s390/disassembler: increase show_code buffer size
  s390: Remove CONFIG_HARDENED_USERCOPY
  s390: enable CPU alternatives unconditionally
  s390/nmi: remove unused code
  s390/mm: remove unused code
  ...

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