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

[Martin Wilck <mwilck@xxxxxxxx>]

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 2.6.32.25 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
states:
    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.


Regards
Martin

Attachment: dmesg.txt
Description: Text document

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