Re: [Xen-devel] Debian linux-image-2.6.32-4-xen-amd64 2.6.32-11 doesn't boot with > 4 GiB; resets immediatelly, no log messages

[Thomas Goirand <thomas@xxxxxxxxxx>]

Jeremy Fitzhardinge wrote:
> On 04/10/2010 03:13 PM, Thomas Schwinge wrote:
>>> Normally that would be OK, because it uses:
>>>
>>>     __get_user(pfn, &machine_to_phys_mapping[mfn]);
>>>
>>> to dereference the array.  But at this early stage, none of the kernel's
>>> exception handlers have been set up, so this will just fault into Xen.
>>>
>>> It would be interesting to confirm this by building your kernel with
>>> CONFIG_DEBUG_INFO=y in the .config, and verify that the faulting
>>> instruction is actually this line.
>>>     
>> Bingo!
>>   
> 
> Excellent.

Could this be also the reason why I had very funky memory management
(eg: some RAM missing between "xm list" and "xm info")?

Thomas

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