Re: Xen paravirt frontend block hang

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Christopher S. Aker wrote:

I'll try to track this down asap.  Have you tried any other kernel
versions?  In other words, did it just start happening, or its always
done it?  Also, could you try 2.6.24-rc6, just to make sure it hasn't
already been fixed (which is possible if its something that happened in
a higher layer or something).

Were you able to give this a try?  Still doing it on pv_ops 2.6.24.

Hm. xming reported similar symtoms to your report, which turned out to be a result of problems with events getting lost. This patch - which is in 2.6.24 - resolved the issue. Stock 2.6.24 still has this problem for you? Can you also reproduce it with lots of console output?

Thanks,
   J


changeset:   76060:66bba82b6e9b
parent:      76048:e10ad8f96525
user:        Jeremy Fitzhardinge <jeremy@xxxxxxxx>
date:        Wed Jan 23 18:04:54 2008 -0800
files:       arch/x86/xen/enlighten.c
description:
xen: disable vcpu_info placement for now

There have been several reports of Xen guest domains locking up when
using vcpu_info structure placement.  Disable it for now.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

committer: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxxxxxxxx>


diff -r e10ad8f96525 -r 66bba82b6e9b arch/x86/xen/enlighten.c
--- a/arch/x86/xen/enlighten.c  Wed Jan 23 09:58:55 2008 -0800
+++ b/arch/x86/xen/enlighten.c  Wed Jan 23 18:04:54 2008 -0800
@@ -95,7 +95,7 @@ struct shared_info *HYPERVISOR_shared_in
 *
 * 0: not available, 1: available
 */
-static int have_vcpu_info_placement = 1;
+static int have_vcpu_info_placement = 0;

static void __init xen_vcpu_setup(int cpu)
{




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