Release Notes for OpenPower Firmware v1.21.1

This is a point release on top of op-build v1.21.

Like v1.21, this release is NOT intended for GA POWER9 platforms, for that, op-build v2.0 is required.

Changes since v1.21:

• skiboot v5.10.1
  • libflash/blocklevel: Correct miscalculation in blocklevel_smart_erase()
  • NPU2 HMIs: dump out a LOT of npu2 registers for debugging
• linux 4.14.22-openpower1
  • 40be210c830e powerpc: Fix DABR match on hash based systems
  • 3b09911d3beb powerpc/xive: Use hw CPU ids when configuring the CPU queues
  • 892674b5058a powerpc/mm: Flush radix process translations when setting MMU type
  • 4386f223b418 powerpc/numa: Invalidate numa_cpu_lookup_table on cpu remove
  • 5b98d31481f9 powerpc/radix: Remove trace_tlbie call from radix__flush_tlb_all
  • c3bdd547042f rtc-opal: Fix handling of firmware error codes, prevent busy loops
  • 8e56a935a4b7 cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin