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>
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@ -1516,7 +1516,8 @@ int start_topology_update(void)
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{
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int rc = 0;
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if (firmware_has_feature(FW_FEATURE_VPHN) &&
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/* Disabled until races with load balancing are fixed */
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if (0 && firmware_has_feature(FW_FEATURE_VPHN) &&
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get_lppaca()->shared_proc) {
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vphn_enabled = 1;
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setup_cpu_associativity_change_counters();
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