Merge tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux

Pull more liveupdate updates from Mike Rapoport:
 "Make boot time huge page allocation work nicely with kexec handover.

  Today allocation of gigantic pages in HugeTLB cannot work reliably
  with kexec handover (KHO):

   - HugeTLB allocates gigantic pages using memblock and autoscaling of
     KHO scratch accounts for these allocations. When gigantic pages
     occupy half of the memory of more, KHO fails to allocate its
     scratch memory.

   - After kexec handover, memblock allocations exclusively use KHO
     scratch that is not supposed to contain preserved memory. This
     essentially blocks preservation of HugeTLB with gigantic pages.

  Extend early memory pools available for KHO kernel with areas that are
  guaranteed not to contain preserved memory"

* tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux: (21 commits)
  kho: exclude hugetlb memory from scratch size calculation
  memblock: add memblock_reserved_hugetlb_size()
  memblock: make HugeTLB bootmem allocation work with KHO
  memblock: always include KHO headers
  kho: extend scratch
  mm/mm_init: don't rely on memblock to get KHO scratch migratetype
  kho: initialize preserved memory map radix tree earlier
  kho: initialize kho_scratch pointer earlier in boot
  kho: expose kho_scratch_overlap() to kexec_handover.h
  kho: add kho_radix_init_tree()
  kho: allow destroying KHO radix tree
  kho: allow early-boot usage of the KHO radix tree
  kho: add data argument to radix walk callback
  kho: add callback for table pages
  kho: add a struct for radix callbacks
  kho: move all memory retrieval logic to kho_mem_retrieve()
  kho: store incoming radix tree in kho_in
  kho: disallow wide keys in radix tree
  kho: make radix max key width more obvious
  kho: generalize radix tree APIs
  ...

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