Pull memblock updates from Mike Rapoport:
 "Test suite and a small cleanup:

   - A small cleanup of unused variable in __next_mem_pfn_range_in_zone

   - Initial test suite to simulate memblock behaviour in userspace"

* tag 'memblock-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock: (27 commits)
  memblock tests: Add TODO and README files
  memblock tests: Add memblock_alloc_try_nid tests for bottom up
  memblock tests: Add memblock_alloc_try_nid tests for top down
  memblock tests: Add memblock_alloc_from tests for bottom up
  memblock tests: Add memblock_alloc_from tests for top down
  memblock tests: Add memblock_alloc tests for bottom up
  memblock tests: Add memblock_alloc tests for top down
  memblock tests: Add simulation of physical memory
  memblock tests: Split up reset_memblock function
  memblock tests: Fix testing with 32-bit physical addresses
  memblock: __next_mem_pfn_range_in_zone: remove unneeded local variable nid
  memblock tests: Add memblock_free tests
  memblock tests: Add memblock_add_node test
  memblock tests: Add memblock_remove tests
  memblock tests: Add memblock_reserve tests
  memblock tests: Add memblock_add tests
  memblock tests: Add memblock reset function
  memblock tests: Add skeleton of the memblock simulator
  tools/include: Add debugfs.h stub
  tools/include: Add pfn.h stub
  ...