On Tue, 01 Aug 2023 10:14:46 +0530, Aneesh Kumar K.V wrote:

Parse the device tree in early init to find the memory block size to be
used by the kernel. Consolidate the memory block size device tree parsing
to one helper and use that on both powernv and pseries. We still want to
use machine-specific callback because on all machine types other than
powernv and pseries we continue to return MIN_MEMORY_BLOCK_SIZE.

pseries_memory_block_size used to look for the second memory
block (memory@x) to determine the memory_block_size value. This patch
changed that to look at all memory blocks and make sure we can map them all
correctly using the computed memory block size value.

[...]

Patch 1 applied to powerpc/next.

[1/2] powerpc/mm: Cleanup memory block size probing
      https://git.kernel.org/powerpc/c/4d15721177d539d743fcf31d7bb376fb3b81aeb6

cheers