Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030697AbcCQNFd (ORCPT ); Thu, 17 Mar 2016 09:05:33 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:44918 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030601AbcCQNFZ (ORCPT ); Thu, 17 Mar 2016 09:05:25 -0400 From: Boris Ostrovsky To: david.vrabel@citrix.com, konrad.wilk@oracle.com Cc: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, Boris Ostrovsky Subject: [PATCH 2/2] xen/x86: Call cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead() Date: Thu, 17 Mar 2016 09:03:25 -0400 Message-Id: <1458219805-13197-3-git-send-email-boris.ostrovsky@oracle.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1458219805-13197-1-git-send-email-boris.ostrovsky@oracle.com> References: <1458219805-13197-1-git-send-email-boris.ostrovsky@oracle.com> X-Source-IP: aserv0022.oracle.com [141.146.126.234] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 774 Lines: 25 This call has always been missing from xen_play dead() but until recently this was rather benign. With new cpu hotplug framework however this call is required, otherwise a hot-plugged CPU will not be properly brough up (by never calling cpuhp_online_idle()) Signed-off-by: Boris Ostrovsky --- arch/x86/xen/smp.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 3c6d17f..719cf29 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -545,6 +545,8 @@ static void xen_play_dead(void) /* used only with HOTPLUG_CPU */ * data back is to call: */ tick_nohz_idle_enter(); + + cpu_startup_entry(CPUHP_AP_ONLINE_IDLE); } #else /* !CONFIG_HOTPLUG_CPU */ -- 1.7.1