From: Keir Fraser <keir.fraser@citrix.com>
Date: Fri, 12 Sep 2008 09:40:19 +0000 (+0100)
Subject: x86, cpu hotplug: flush softirq work when going offline
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14110^2~14
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=e17887baa3998b62af929fd143e1a8e35266509a;p=xen.git

x86, cpu hotplug: flush softirq work when going offline

From: Haitao Shan <haitao.shan@intel.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
---

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 9f2746910b..31a100f81c 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -86,6 +86,12 @@ static void default_idle(void)
 
 static void play_dead(void)
 {
+    /*
+     * Flush pending softirqs if any. They can be queued up before this CPU
+     * was taken out of cpu_online_map in __cpu_disable().
+     */
+    do_softirq();
+
     /* This must be done before dead CPU ack */
     cpu_exit_clear();
     hvm_cpu_down();