Do not mark regions that are marked with nomap to be present, otherwise these memblock cause unnecessarily allocation of metadata.
Cc: Andrew Morton <[email protected]> Cc: Pavel Tatashin <[email protected]> Cc: Oscar Salvador <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Baoquan He <[email protected]> Cc: Qian Cai <[email protected]> Cc: Wei Yang <[email protected]> Cc: Logan Gunthorpe <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: KarimAllah Ahmed <[email protected]> --- mm/sparse.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mm/sparse.c b/mm/sparse.c index fd13166..33810b6 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -256,6 +256,10 @@ void __init memblocks_present(void) struct memblock_region *reg; for_each_memblock(memory, reg) { + + if (memblock_is_nomap(reg)) + continue; + memory_present(memblock_get_region_node(reg), memblock_region_memory_base_pfn(reg), memblock_region_memory_end_pfn(reg)); -- 2.7.4
