s390/mm: Allocate page table with PAGE_SIZE granularity

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[ Upstream commit daa8af80d2 ]

Make vmem_pte_alloc() consistent by always allocating page table of
PAGE_SIZE granularity, regardless of whether page_table_alloc() (with
slab) or memblock_alloc() is used. This ensures page table can be fully
freed when the corresponding page table entries are removed.

Fixes: d08d4e7cd6 ("s390/mm: use full 4KB page for 2KB PTE")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Sumanth Korikkar 2025-08-04 11:57:03 +02:00 • committed by Greg Kroah-Hartman

parent d00e412568

commit 9432bcabee

1 changed files with 2 additions and 3 deletions

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arch/s390/mm/vmem.c

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