Re: [Xen-users] XEN 3.4.2 /proc/xen/balloon doesn't exist and grub2 trouble

[Gabor Szilagyi <szilagyi@xxxxxxxxxxxx>]

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Gabor Szilagyi wrote:
> Pasi Kärkkäinen wrote:
>> On Tue, Jan 26, 2010 at 11:49:43AM -0500, Gabor Szilagyi wrote:
>>>>> So I am trying to make it myself.
>>>>>
>>>>> I have installed xen 3.4.2 from source, did make world and installed.
>>>>>
>>>>> Got the kernel source from from the git repository with the xen patches
>>>>> following the xen wiki.... compiled dom0 kernel just fine.
>>>>>
>>>> So you're using pv_ops dom0 kernel?
>>> Yes I am pretty sure.. I can boot it on the bare hardware not problem
>>>
>> Ok.
> 
>>>>> I can boot xen, with grup (old something went odd with grub2 for me) and
>>>>> then it boots my dom0 kernel fine.
>>>>>
>>>> For GRUB2 see:
>>>> http://wiki.xensource.com/xenwiki/XenCommonProblems
>>> Well, I have looked at this and went a head re-install Debian Squeeze
>>> with grub2 ...
>>>
>>> Now, I can not even boot xen-3.4.2.gz which I built again from source....
>>>
>> Uhm.. what error do you get? 
> 
> I can copy from the console only the last few all line start with (XEN)
> so I will not copy those
> 
> Panic on CPU 0:
> Cannot access memory beyond end of bootstrap direct-map area
> ******************
> 
> Reboot in five second
> Early fatal page fault at e008:ff146c9 (cr2=fffde020,ec=0000
> Stack dump ... and a whole bunch of numbers
> 
> 
> I see this exact some other post
> 
>> Can you set up a serial console to log the full boot process?
> I could if I had the right cable.
>> See:
>> http://wiki.xensource.com/xenwiki/XenSerialConsole

Hi Pasi,

I got the null-modem and booted with the serial consol and here is the
log.... hope you can suggest something...

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(XEN) Xen version 3.4.2 (root@xxxxxxxxxxxx) (gcc version 4.3.4 (Debian
4.3.4-6) ) Mon Jan 25 16:28:40 EST 2010
(XEN) Latest ChangeSet: unavailable

(XEN) Console output is synchronous.

(XEN) Command line: dummy=dummy dom0_mem=512M loglvl=all
guest_loglvl=all sync_console console_to_ring com1=9600,8n1 console=com1
(XEN) Video information:

(XEN)  VGA is text mode 80x25, font 8x16

(XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds

(XEN) Disc information:

(XEN)  Found 2 MBR signatures

(XEN)  Found 2 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009d000 (usable)
(XEN)  000000000009d000 - 00000000000a0000 (reserved)
(XEN)  00000000000ce000 - 00000000000d4000 (reserved)
(XEN)  00000000000e0000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000d7f80000 (usable)
(XEN)  00000000d7f80000 - 00000000d7f98000 (ACPI data)
(XEN)  00000000d7f98000 - 00000000d7fbc000 (ACPI NVS)
(XEN)  00000000d7fbc000 - 00000000e0000000 (reserved)
(XEN)  00000000f8000000 - 00000000fc000000 (reserved)
(XEN)  00000000fec00000 - 00000000fec10000 (reserved)
(XEN)  00000000fee00000 - 00000000fee01000 (reserved)
(XEN)  00000000ff000000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 00000001fe000000 (usable)
(XEN)  00000001fe000000 - 0000000200000000 (reserved)
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Cannot access memory beyond end of bootstrap direct-map area
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...
(XEN) Unknown interrupt (cr2=00000000)
(XEN)   ff202ec4  a1e00000  00000002  ff22be54  00000086  00000002
ff1d68dc  00000000  ff14e687  0000e008  00000286  ff1d67c0  0000000a
ff1c5146  ff22b0



This is consistent the xen image I compiled on the same machine but I
can do that again... tried to make an X83_32_pae for the same type of
kernel would like to be able to use pv_ops and hvm domU as well (but at
least boot xen :-)

Gabor


> Any suggestion ... to further investigate this??
> 
> Gabor
> 
> 
> 
>> -- Pasi
> 
> 

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