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Date: Fri, 11 Nov 2016 10:11:56 -0800 From: Vijay Kumar <vijay.ac.kumar@...cle.com> To: davem@...emloft.net, sparclinux@...r.kernel.org Cc: karl.volz@...cle.com, rob.gardner@...cle.com, linux-kernel@...r.kernel.org Subject: [PATCH v2 1/4] 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 <vijay.ac.kumar@...cle.com> --- arch/sparc/kernel/smp_64.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c index d3035ba..14138ad 100644 --- a/arch/sparc/kernel/smp_64.c +++ b/arch/sparc/kernel/smp_64.c @@ -1435,6 +1435,7 @@ 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(); } @@ -1446,6 +1447,8 @@ 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; -- 1.7.1
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