Commit 1db9716d authored by Rong Qianfeng's avatar Rong Qianfeng Committed by Will Deacon
Browse files

arm64/mm: Delete __init region from memblock.reserved 



If CONFIG_ARCH_KEEP_MEMBLOCK is enabled, the memory information in
memblock will be retained.  We release the __init memory here, and
we should also delete the corresponding region in memblock.reserved,
which allows debugfs/memblock/reserved to display correct memory
information.

Signed-off-by: default avatarRong Qianfeng <rongqianfeng@vivo.com>
Link: https://lore.kernel.org/r/20240902023940.43227-1-rongqianfeng@vivo.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 7c626ce4

arch/arm64/mm/init.c

+6 −0
Original line number Diff line number Diff line
@@ -414,6 +414,12 @@ void __init mem_init(void) 


void free_initmem(void)

{

	unsigned long aligned_begin = ALIGN_DOWN((u64)__init_begin, PAGE_SIZE);

	unsigned long aligned_end = ALIGN((u64)__init_end, PAGE_SIZE);



	/* Delete __init region from memblock.reserved. */

	memblock_free((void *)aligned_begin, aligned_end - aligned_begin);



	free_reserved_area(lm_alias(__init_begin),

			   lm_alias(__init_end),

			   POISON_FREE_INITMEM, "unused kernel");