So far, so good.. This patch seems to fix things for me.. I have 4 domains
running right now, 2 mostly idle, one running an 'ls -R /' loop in cygwin,
and the fourth trudging through a chkdsk so it too is hitting the disk
hard. Domains have been up for about an hour now without any problems,
which is a lot longer than before.
Please check it in when you can, and thanks.
john.c
- --
John Clemens jclemens@xxxxxxxxxxxxxxx
On Mon, 27 Feb 2006, Jiang, Yunhong wrote:
Hi, John
Can you try the attached patch ?
This issue can be reproduced on SMP platform, while the domain 0
is UP. The reason is, after finishing a dma request, the dma thread will
trigger the interrupt and then clear the call back function. When guest
get the interrupt , it will try to check the call back function, if it
is set, then it will trigger a dma request again. So if the checking for
the callbackfunction happens between trigger interrupt and clear
callback function on dma thread, it will cause NULL function calling.
After with domain 0 UP and smp platform, this situation can be
reproduced easily.
Thanks
Yunhong Jiang
This patch fix this issue by placing the interupt request in the end of
dma thread.
-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of
John Clemens
Sent: Thursday, February 23, 2006 6:12 AM
To: Li, Xin B
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-devel] qemu-dm segfault with multiple HVM domains?
Thanks, glad to know I'm not the only one seeing this... I've opened
bug 542.
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=542
john.c
- --
John Clemens jclemens@xxxxxxxxxxxxxxx
On Thu, 23 Feb 2006, Li, Xin B wrote:
Just verifying that with cs 8932 I still see this problem.
I'm able to
start multiple windows domains, but either immediately or over
time all
but one qemu-dm processes segfaults. This only appears to be
a problem
when I start multiple windows domains, a single domain seems
to work fine.
qemu-dm[4961]: segfault at 0000000000000000 rip 0000000000000000 rsp
0000000040800198 error 14
qemu-dm[4963]: segfault at 0000000000000000 rip 0000000000000000 rsp
0000000040800198 error 14
Thanks, I ever met this issue too, but did not pay much attention to
this :-(
Can you pls fire a bug?
-Xin
john.c
- --
John Clemens jclemens@xxxxxxxxxxxxxxx
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