From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964915AbcKJWny (ORCPT ); Thu, 10 Nov 2016 17:43:54 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:23489 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934845AbcKJWnr (ORCPT ); Thu, 10 Nov 2016 17:43:47 -0500 From: Vijay Kumar To: davem@davemloft.net, sparclinux@vger.kernel.org Cc: karl.volz@oracle.com, rob.gardner@oracle.com, linux-kernel@vger.kernel.org Subject: [PATCH 1/4] sparc64: Set cpu state to offline when stopped Date: Thu, 10 Nov 2016 14:43:33 -0800 Message-Id: <1478817816-98939-1-git-send-email-vijay.ac.kumar@oracle.com> X-Mailer: git-send-email 1.7.1 X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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