<tt>crash-utility-bounces@redhat.com wrote on 11/08/2005 02:54:33 PM: > On Tue, 2005-11-08 at 17:32 -0500, Dave Anderson wrote: > > Badari Pulavarty wrote: > > > > > 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 ? > > > > > > > If you can google out the wholesale patch that introduced the > > 4-level pagetable support, you might find something added > > or removed? That's what I did for the x86_64 qualifier. > > > > Okay. I found new structure "pgtable_cache" got added along > with 4-level pagetable changes. I am using that symbol now. > > Thanks, > Badari > </tt> <tt>Badari, Thanks a lot for helping us on PPC64. </tt> <tt>Dave, Is it a problem if we use Linux version to determine 4-level page table changes instead of looking for some symbol which might get changed later. We need to make some more changes for 64K page support added in 2.6.14-git11. </tt> <tt>Thanks</tt> <tt>Haren</tt> <tt> > > [attachment "crash-ppc64-4level-latest.patch" deleted by Haren > Myneni/Beaverton/IBM] -- > Crash-utility mailing list > Crash-utility@redhat.com > https://www.redhat.com/mailman/listinfo/crash-utility </tt>