If kernelcore was not specified, or the kernelcore size is zero
(required_movablecore >= totalpages), or the kernelcore size is larger
than totalpages, there is no ZONE_MOVABLE. We should fill the zone
with both kernel memory and movable memory.
Signed-off-by: Xishi Qiu <qiuxi...@huawei.com>
---
mm/page_alloc.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index af3c9bd..6a6da0d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5674,8 +5674,11 @@ static void __init find_zone_movable_pfns_for_nodes(void)
required_kernelcore = max(required_kernelcore, corepages);
}
- /* If kernelcore was not specified, there is no ZONE_MOVABLE */
- if (!required_kernelcore)
+ /*
+ * If kernelcore was not specified or kernelcore size is larger
+ * than totalpages, there is no ZONE_MOVABLE.
+ */
+ if (!required_kernelcore || required_kernelcore >= totalpages)
goto out;
/* usable_startpfn is the lowest possible pfn ZONE_MOVABLE can be at */
--
2.0.0
--
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