Commit 36e8695c authored Mar 09, 2011 by Benjamin Herrenschmidt

powerpc/pseries: Disable VPNH feature



This feature triggers nasty races in the scheduler between the
rebuilding of the topology and the load balancing code, causing
the machine to hang.

Disable it for now until the races are fixed.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent f2f6dad6

arch/powerpc/mm/numa.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1516,7 +1516,8 @@ int start_topology_update(void)
		{
		int rc = 0;

		if (firmware_has_feature(FW_FEATURE_VPHN) &&
		/* Disabled until races with load balancing are fixed */
		if (0 && firmware_has_feature(FW_FEATURE_VPHN) &&
		get_lppaca()->shared_proc) {
		vphn_enabled = 1;
		setup_cpu_associativity_change_counters();