Hi Mike,
Le 14/03/2025 à 10:25, Christophe Leroy a écrit :
Le 13/03/2025 à 14:49, Mike Rapoport a écrit :
From: "Mike Rapoport (Microsoft)" <r...@kernel.org>
max_mapnr is essentially the size of the memory map for systems that use
FLATMEM. There is no reason to calculate it in each and every
architecture
when it's anyway calculated in alloc_node_mem_map().
Drop setting of max_mapnr from architecture code and set it once in
alloc_node_mem_map().
As far as I can see alloc_node_mem_map() is called quite late.
I fear that it will regress commit daa9ada2093e ("powerpc/mm: Fix boot
crash with FLATMEM")
Can you check ?
I see this patch is now merged into mainline (v6.15-rc1). Have you been
able to check and/or analyse whether it doesn't regress the fix in
commit daa9ada2093e ("powerpc/mm: Fix boot crash with FLATMEM") ?
Thanks
Christophe
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