[Crash-utility] crash-4.0-2.10 ppc64 4-level pagetable fixes

[Badari Pulavarty]

On Tue, 2005-11-08 at 14:42 -0500, Dave Anderson wrote:
> Badari Pulavarty wrote:
> 
> >
> >
> > Yep. You are right, those pages are not mapped. Initially
> > I thought that was the case, but I wasn't really sure if it
> > can happen with segments from shared libraries. (since
> > the routine which is telling its not mapped involves
> > going through my code).
> >
> > Anyway, I verified this on x86-64 machine also - I do
> > get "read" error and those pages are not mapped.
> >
> > I guess, my changes are good :)
> >
> > Haren, can you review them ?
> >
> > Thanks,
> > Badari
> >
> 
> The patch looks just fine to me -- the only minor things to
> add is a dump of the VM_ORIG/VM_4_LEVEL bits in
> the ppc64_dump_machdep_table() debug function, and
> although the "pud_clear_bad" is in all probability quite
> suitable as a qualifier, it's probably also worth adding
> an optional "--machdep vm=xxx" command line argument
> like I put in place for the x86_64 equivalent.  Just to cover
> our collective arse...
> 
> Anyway, upon Haren's blessing, it's good to go.
> 
> Again -- really nice work!

Okay, made recommended changes.

I still need to figure out a decent symbol to identify
4-level pagetable layout. I am looking through "nm -Bn". 
I still can't find a decent one. (has to be some symbol 
added for 2.6.14).

Any ideas ?

Thanks,
Badari
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