Clear more state when ignoring empty node in SRAT parsing

Might fix boot failures on systems with empty PXMs in SRAT


Signed-off-by: Andi Kleen <ak@suse.de>

Index: linux/arch/x86_64/mm/srat.c
===================================================================
--- linux.orig/arch/x86_64/mm/srat.c
+++ linux/arch/x86_64/mm/srat.c
@@ -223,6 +223,16 @@ static int nodes_cover_memory(void)
 	return 1;
 }
 
+static void unparse_node(int node)
+{
+	int i;
+	node_clear(node, nodes_parsed);
+	for (i = 0; i < MAX_LOCAL_APIC; i++) {
+		if (apicid_to_node[i] == node)
+			apicid_to_node[i] = NUMA_NO_NODE;
+	}
+}
+
 void __init acpi_numa_arch_fixup(void) {}
 
 /* Use the information discovered above to actually set up the nodes. */
@@ -237,7 +247,7 @@ int __init acpi_scan_nodes(unsigned long
 	for_each_node_mask(i, nodes_parsed) {
 		cutoff_node(i, start, end);
 		if (nodes[i].start == nodes[i].end)
-			node_clear(i, nodes_parsed);
+			unparse_node(i);
 	}
 
 	if (!nodes_cover_memory()) {