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authorYinghai Lu <yinghai@kernel.org>2009-04-23 01:19:27 +0400
committerIngo Molnar <mingo@elte.hu>2009-04-23 11:58:56 +0400
commit4c31e92b97b6d7e7b19ee5e54a22571ffdebb305 (patch)
tree5c38cbe0d3a324377ca4059abdec616e609aaa41 /arch/x86/mm/numa_64.c
parentc5428e950ad42640f00092949fd17e356dfdeafa (diff)
downloadlinux-4c31e92b97b6d7e7b19ee5e54a22571ffdebb305.tar.xz
x86: check boundary in setup_node_bootmem()
Commit dc09855 ("x86/uv: fix init of memory-less nodes") causes a two sockets system (where node-1 doesn't have RAM installed) to crash. That commit makes node_possible include cpu nodes that do not have memory. So check boundary in setup_node_bootmem(). [ Impact: fix boot crash on RAM-less NUMA node system ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Jack Steiner <steiner@sgi.com> LKML-Reference: <49EF89DF.9090404@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/numa_64.c')
-rw-r--r--arch/x86/mm/numa_64.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index d73aaa892371..2d05a12029dc 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -188,6 +188,9 @@ void __init setup_node_bootmem(int nodeid, unsigned long start,
const int pgdat_size = roundup(sizeof(pg_data_t), PAGE_SIZE);
int nid;
+ if (!end)
+ return;
+
start = roundup(start, ZONE_ALIGN);
printk(KERN_INFO "Bootmem setup node %d %016lx-%016lx\n", nodeid,