From cffb3e76818fee4763a2ce5f2b1eca2d7885e2cf Mon Sep 17 00:00:00 2001 From: Vijay Kumar Date: Wed, 1 Feb 2017 11:34:37 -0800 Subject: [PATCH] sparc64: Set cpu state to offline when stopped CPU needs to be marked offline before stopping it. When not marked offline, the xcall receives HV_EWOULDBLOCK and so assumes that not all CPUs received the message, and retries. After 10000 retries, it finally fails with fatal mondo timeout. Signed-off-by: Vijay Kumar Signed-off-by: David S. Miller --- arch/sparc/kernel/smp_64.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index 0ce347f8e4cc..712bf1b7f630 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1443,6 +1443,7 @@ void __irq_entry smp_receive_signal_client(int irq, struct pt_regs *regs) static void stop_this_cpu(void *dummy) { + set_cpu_online(smp_processor_id(), false); prom_stopself(); } @@ -1454,6 +1455,8 @@ void smp_send_stop(void) for_each_online_cpu(cpu) { if (cpu == smp_processor_id()) continue; + + set_cpu_online(cpu, false); #ifdef CONFIG_SUN_LDOMS if (ldom_domaining_enabled) { unsigned long hv_err; -- 2.20.1