Merge tag 'xtensa-20220523' of https://github.com/jcmvbkbc/linux-xtensa

Merge tag 'xtensa-20220523' of https://github.com/jcmvbkbc/linux-xtensa

Pull xtensa architecture updates from Max Filippov:

 - support coprocessors on SMP

 - support KCSAN

 - support handling protection faults in noMMU configurations

 - support using coprocessors in the kernel mode

 - support hibernation

 - enable context tracking

 - enable HAVE_VIRT_CPU_ACCOUNTING_GEN

 - support division by 0 exception on cores without HW division option

 - clean up locking in the ISS network driver

 - clean up kernel entry assemly code

 - various minor fixes

* tag 'xtensa-20220523' of https://github.com/jcmvbkbc/linux-xtensa: (36 commits)
  xtensa: Return true/false (not 1/0) from bool function
  xtensa: improve call0 ABI probing
  xtensa: support artificial division by 0 exception
  xtensa: add trap handler for division by zero
  xtensa/simdisk: fix proc_read_simdisk()
  xtensa: no need to initialise statics to 0
  xtensa: clean up labels in the kernel entry assembly
  xtensa: don't leave invalid TLB entry in fast_store_prohibited
  xtensa: fix declaration of _SecondaryResetVector_text_*
  irqchip: irq-xtensa-mx: fix initial IRQ affinity
  xtensa: enable ARCH_HAS_DEBUG_VM_PGTABLE
  xtensa: add hibernation support
  xtensa: support coprocessors on SMP
  xtensa: get rid of stack frame in coprocessor_flush
  xtensa: merge SAVE_CP_REGS_TAB and LOAD_CP_REGS_TAB
  xtensa: add xtensa_xsr macro
  xtensa: handle coprocessor exceptions in kernel mode
  xtensa: use callx0 opcode in fast_coprocessor
  xtensa: clean up excsave1 initialization
  xtensa: clean up declarations in coprocessor.h
  ...