Messages in this thread | | | Date | Thu, 1 Jan 2009 05:17:27 +0100 | From | Andi Kleen <> | Subject | Re: early exception error |
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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 ?
-Andi
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