x86: reduce memory and intra-node effects
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index bccbdc7..e5a1ec8 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -346,8 +346,12 @@
/* First clean up the node list */
for (i = 0; i < MAX_NUMNODES; i++) {
cutoff_node(i, start, end);
- /* ZZZ why was this needed. At least add a comment */
- if (nodes[i].end && (nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) {
+ /*
+ * don't confuse VM with a node that doesn't have the
+ * minimum memory.
+ */
+ if (nodes[i].end &&
+ (nodes[i].end - nodes[i].start) < NODE_MIN_SIZE) {
unparse_node(i);
node_set_offline(i);
}