[Xen-bugs] [Bug 1695] domu hangs on shutdown or reboot

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1695


heil@xxxxxxxxxxxxxxxxxxxxxx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




------- Comment #1 from heil@xxxxxxxxxxxxxxxxxxxxxx  2010-12-17 04:51 -------
Seems that a commit for 2.6.35.10 fixes the problem. And it seem to that no one
uses this bugzilla here?
--
>From 31e323cca9d5c8afd372976c35a5d46192f540d1 Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Date: Mon, 29 Nov 2010 14:16:53 -0800
Subject: [PATCH] xen: don't bother to stop other cpus on shutdown/reboot

Xen will shoot all the VCPUs when we do a shutdown hypercall, so there's
no need to do it manually.

In any case it will fail because all the IPI irqs have been pulled
down by this point, so the cross-CPU calls will simply hang forever.

Until change 76fac077db6b34e2c6383a7b4f3f4f7b7d06d8ce the function calls
were not synchronously waited for, so this wasn't apparent.  However after
that change the calls became synchronous leading to a hang on shutdown
on multi-VCPU guests.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Cc: Stable Kernel <stable@xxxxxxxxxx>
Cc: Alok Kataria <akataria@xxxxxxxxxx>
---
 arch/x86/xen/enlighten.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 235c0f4..4a5973a 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1016,10 +1016,6 @@ static void xen_reboot(int reason)
 {
        struct sched_shutdown r = { .reason = reason };

-#ifdef CONFIG_SMP
-       stop_other_cpus();
-#endif
-
        if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r))
                BUG();
 }
-- 
1.7.3.4
--


-- 
Configure bugmail: 
http://bugzilla.xensource.com/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.

_______________________________________________
Xen-bugs mailing list
Xen-bugs@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-bugs