Re: early exception error

david
2009-01-01T05:15:17Z

On Thu, 1 Jan 2009, Andi Kleen wrote:

> On Wed, Dec 31, 2008 at 12:59:08PM -0800, david@lang.hm wrote:
>> On Wed, 31 Dec 2008, Andi Kleen wrote:
>>
>>>> on the picture you sent me i noticed the message
>>>> "Your memory is not aligned you need to rebuild your
>>>> kernel with bigger NODEMAP SIZE shift=20" and then
>>>> srat code complains about "No NUMA code hash function found"
>>>> which looks a bit scary. Btw, could you post this picture
>>>> on some public resource so NUMA people could check it?
>>>
>>> This case used to be handled cleanly (NUMA disabled), but perhaps
>>> that has regressed. But still it sounds like something is going wrong,
>>> unless his machine really has a very weird memory map.
>>
>> it shouldn't, it was one of the high-volume servers 4-5 years ago and only
>> has 4G of ram in it
>
> From looking at the screenshot Cyrill sent you seem to have a funny
> SRAT with overlapping areas that is rejected in the end. I suspect the
> fallback code doesn't handle this properly.
>
> Does it work when you boot with numa=noacpi ?

it gets past the point where the bootmemory_debug messages flow by, but I
get another oops (snapshot of the screen is at
http://linux.lang.hm/linux/IMG00031.jpg )

David Lang