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Commit 7eccf7b2 authored by David Rientjes's avatar David Rientjes Committed by Ingo Molnar
Browse files

x86, srat: do not register nodes beyond e820 map 



The mem= option will truncate the memory map at a specified address so
it's not possible to register nodes with memory beyond the e820 upper
bound.

unparse_node() is only called when then node had memory associated with
it, although with the mem= option it is no longer addressable.

[ Impact: fix boot hang on certain (large) systems ]

Reported-by: default avatar"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
Acked-by: default avatarJack Steiner <steiner@sgi.com>
LKML-Reference: <alpine.DEB.2.00.0905051248150.20021@chino.kir.corp.google.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 413f81eb

arch/x86/mm/srat_64.c

+1 −0
Original line number Diff line number Diff line
@@ -361,6 +361,7 @@ static void __init unparse_node(int node) 
{

	int i;

	node_clear(node, nodes_parsed);

	node_clear(node, cpu_nodes_parsed);

	for (i = 0; i < MAX_LOCAL_APIC; i++) {

		if (apicid_to_node[i] == node)

			apicid_to_node[i] = NUMA_NO_NODE;