RE: [Xen-devel] Unable to bring up x86_64 UP DomU on processor #32

["Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx>]

The problem is here:
xc.domain_pincpu(self.domid, 0, 1 << cpu)

1 <<32 crosses the int size, as the 1 is signed.

I you represent that 1 as unsigned or long, then it should work.

I don't know how to represent unsigned or long number in python.

Thanks & Regards,
Nitin
------------------------------------------------------------------------
-----------
Open Source Technology Center, Intel Corp

>-----Original Message-----
>From: Puthiyaparambil, Aravindh
>[mailto:aravindh.puthiyaparambil@xxxxxxxxxx]
>Sent: Friday, October 21, 2005 2:49 PM
>To: Kamble, Nitin A; xen-devel
>Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on processor
#32
>
>Nitin,
>
>Thanks for the lead. This is what /var/log/xend-debug.log says:
>
>OverflowError: signed integer is greater than maximum
>mainInfo.create(config)
>  File
>"/root/xen/xen-unstable.hg/dist/install/usr/lib64/python/xen/xend/XendD
o
>mainInfo.py", line 147, in create
>    vm.initDomain()
>  File
>"/root/xen/xen-unstable.hg/dist/install/usr/lib64/python/xen/xend/XendD
o
>mainInfo.py", line 1093, in initDomain
>    xc.domain_pincpu(self.domid, 0, 1 << cpu)
>OverflowError: signed integer is greater than maximum
>cpus          = self.vm.getVCpuCount())
>error: (0, 'Error')
>Failed allocation for dom 19: 893952 pages order 0 addr_bits 0
>
>Aravindh
>
>> -----Original Message-----
>> From: Kamble, Nitin A [mailto:nitin.a.kamble@xxxxxxxxx]
>> Sent: Friday, October 21, 2005 5:38 PM
>> To: Puthiyaparambil, Aravindh; xen-devel
>> Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
>processor
>> #32
>>
>> That's Good to know. Then this should be easy to fix. Probably the
>> python code (xm, xend) has some issue.
>>   You can look at /var/log/xen* files to see what is the reason of
the
>> error.
>>
>> Thanks & Regards,
>> Nitin
>>
>-----------------------------------------------------------------------
-
>> -----------
>> Open Source Technology Center, Intel Corp
>>
>> >-----Original Message-----
>> >From: Puthiyaparambil, Aravindh
>> >[mailto:aravindh.puthiyaparambil@xxxxxxxxxx]
>> >Sent: Friday, October 21, 2005 2:35 PM
>> >To: Kamble, Nitin A; xen-devel
>> >Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
>processor
>> #32
>> >
>> >Nitin,
>> >
>> >When I don't specify "cpu=n", the domain does come up on CPU #32.
>> >
>> >Name                              ID  VCPU  CPU  State  Time(s)  CPU
>> Map
>> >Domain-0                           0     0    0   r--      80.1
>> >0xffffffffffffffff
>> >vm1                                1     0   31   r--       7.6
>> >0xffffffffffffffff
>> >
>> >
>> >But shouldn't I be able to specify "cpu=31"?
>> >
>> >Thanks,
>> >Aravindh
>> >
>> >> -----Original Message-----
>> >> From: Kamble, Nitin A [mailto:nitin.a.kamble@xxxxxxxxx]
>> >> Sent: Friday, October 21, 2005 5:16 PM
>> >> To: Puthiyaparambil, Aravindh; xen-devel
>> >> Subject: RE: [Xen-devel] Unable to bring up x86_64 UP DomU on
>> >processor
>> >> #32
>> >>
>> >> Aravindh,
>> >>    By default Domains are assigned highest least loaded cpu. So
>domU
>> >> should get the CPU 31 as a default if you don't specify cpu=n
>option.
>> >>
>> >>   What do you see if you don't specify the "cpu=n"?
>> >>
>> >> Thanks & Regards,
>> >> Nitin
>> >>
>>
>>----------------------------------------------------------------------
-
>> -
>> >> -----------
>> >> Open Source Technology Center, Intel Corp
>> >>
>> >> >-----Original Message-----
>> >> >From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-
>> >> >bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Puthiyaparambil,
>Aravindh
>> >> >Sent: Friday, October 21, 2005 2:11 PM
>> >> >To: xen-devel
>> >> >Subject: [Xen-devel] Unable to bring up x86_64 UP DomU on
>processor
>> >#32
>> >> >
>> >> >I am running x86_64 Xen on an ES7000 with 32 logical processors.
I
>> am
>> >> >trying to force a DomU to come up on CPU #32 by specifying
>"cpu=31"
>> >in
>> >> >the DomU configuration file. "xm" gives me the following error
>> >message:
>> >> >
>> >> >"Error: Error creating domain: signed integer is greater than
>> >maximum"
>> >> >
>> >> >I am able to do "cpu=30" successfully.
>> >> >
>> >> >Is this a bug? Should I be opening up a bug report?
>> >> >
>> >> >BTW, this does NOT happen on x86_32 PAE.
>> >> >
>> >> >Aravindh
>> >> >
>> >> >_______________________________________________
>> >> >Xen-devel mailing list
>> >> >Xen-devel@xxxxxxxxxxxxxxxxxxx
>> >> >http://lists.xensource.com/xen-devel

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