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    SubjectRe: early exception error
    On Wed, 31 Dec 2008, david@lang.hm wrote:

    > 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 )

    oops, I misread your mail, IMG00031.jpg was with numa=off

    I just posted IMG00033.jpg which is with numa=noacpi and earlyprintk=vga
    but not bootmem_debug

    David Lang



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