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SubjectRe: 2.6.15-rc4 panic in __nr_to_section() with CONFIG_SPARSEMEM
On Thu, 8 Dec 2005, Dave Hansen wrote:
> On Thu, 2005-12-08 at 08:07 -0800, Badari Pulavarty wrote:
> > No. It doesn't help. It looks like ppc pmd_huge() always returns 0.
> > Don't know why ? :(
> The ppc64 hugetlb pages don't line up on PMD boundaries like they do on
> i386. The entries are stored in regular old PTEs.
> I really don't like coding the two different hugetlb cases, but I can't
> think of a better way to do it. Anyone care to test on ppc64?

Oh, it isn't worth that effort, just test is_vm_hugetlb_page(vma)
in show_smap, and skip it if so - or make up appropriate numbers
from (vm_end - vm_start) in that case if you like.

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