The patch titled
Subject: memblock: check memory total_size
has been added to the -mm tree. Its filename is
memblock-check-memory-total_size.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/memblock-check-memory-total_size.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/memblock-check-memory-total_size.patch
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------------------------------------------------------
From: Peng Fan <peng.fan@xxxxxxx>
Subject: memblock: check memory total_size
mem=[X][G|M] is broken on ARM64 platform, there are cases that even
type.cnt is 1, but total_size is not 0 because regions are merged into 1.
So only check 'cnt' is not enough, total_size should be used, othersize
bootargs 'mem=[X][G|B]' not work anymore.
Link: https://lkml.kernel.org/r/20210930024437.32598-1-peng.fan@xxxxxxxxxxx
Fixes: e888fa7bb882 ("memblock: Check memory add/cap ordering")
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxx>
Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memblock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memblock.c~memblock-check-memory-total_size
+++ a/mm/memblock.c
@@ -1687,7 +1687,7 @@ void __init memblock_cap_memory_range(ph
if (!size)
return;
- if (memblock.memory.cnt <= 1) {
+ if (!memblock_memory->total_size) {
pr_warn("%s: No memory registered yet\n", __func__);
return;
}
_
Patches currently in -mm which might be from peng.fan@xxxxxxx are
memblock-check-memory-total_size.patch
