This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] Re: system freeze when processor.ko is loaded during boo

To: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: system freeze when processor.ko is loaded during boot
From: Martin Wilck <mwilck@xxxxxxxx>
Date: Wed, 24 Nov 2010 00:16:21 +0100
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
Delivery-date: Tue, 23 Nov 2010 14:23:15 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <789F9655DD1B8F43B48D77C5D30659732FD0A251@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Openpgp: id=70700BF2
References: <4CAF794F.6070308@xxxxxxxx> <4CBEAEE2020000780001E237@xxxxxxxxxxxxxxxxxx> <789F9655DD1B8F43B48D77C5D30659732FD0A251@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20100714 SUSE/3.0.6 Thunderbird/3.0.6
Hello Yunhong,

thanks for your reply, I am sorry it took me so long to respond.

> Martin, did you try latest origin/xen/stable-2.6.32.x branch to see if 
> anything different? 

I ran from Jeremy's branch, no change - system still freezes
if processor.ko is loaded at boot time.

xen-unstable changeset:   22417:c0c1f5f0745e
xen/stable-2.6.32.x commit: 481bd8e6b8dafed2ea445e8cde2abbbb95b49ec1

There was a bug in .32 branch on processor before, which should have
been fixed. And can you share the boot log and the feature supported in
this platform?

dmesg.txt (from non-xen kernel) is attached.

$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 13
model name      : Intel(R) Pentium(R) M processor 2.13GHz
stepping        : 8
cpu MHz         : 800.000
cache size      : 2048 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov clflush dts acpi mmx fxsr sse sse2 ss tm pbe up bts est tm2
bogomips        : 1596.16
clflush size    : 64
cache_alignment : 64
address sizes   : 32 bits physical, 32 bits virtual
power management:

$ cat /proc/acpi/processor/CPU0/power
active state:            C0
max_cstate:              C8
maximum allowed latency: 2000000000 usec
    C1:                  type[C1] promotion[--] demotion[--]
latency[001] usage[00001533] duration[00000000000000000000]
    C2:                  type[C2] promotion[--] demotion[--]
latency[001] usage[00294108] duration[00000000004868085138]
    C3:                  type[C3] promotion[--] demotion[--]
latency[085] usage[00470473] duration[00000000008899295934]

$ cat /proc/acpi/processor/CPU0/info
processor id:            0
acpi id:                 0
bus mastering control:   yes
power management:        yes
throttling control:      yes
limit interface:         yes

> And I remember report about Xen freeze on some platform with HPET broadcast 
> enabled 
> http://lists.xensource.com/archives/html/xen-users/2010-09/msg00370.html , 
> but not sure if it's the same issue with you (I checked that issue when it 
> was reported and made no progress).
I played around with the hpet_broadcast xen paramter, but it didn't have
an effect.


Attachment: dmesg.txt
Description: Text document

Xen-devel mailing list
<Prev in Thread] Current Thread [Next in Thread>