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

On Tue, 2005-11-08 at 17:17 -0500, Dave Anderson wrote: > Badari Pulavarty wrote: > > > On Tue, 2005-11-08 at 14:52 -0500, Dave Anderson wrote: > > > BTW-- what kernel version introduced this change for ppc64? > > > > 4-level pagetable went into 2.6.14 for ppc64. > > Yuck. That reminds me that "pud_clear_bad()" is not a good > > choice for detecting new layout (its a generic routine - not > > ppc64 specific and is in 2.6.11 onwards). > > > > Funny thing is, I am not sure original crash is working > > on pre-2.6.14 kernel either. I see PTE_SHIFT changed from > > 16 to 17 in 2.6.10. I guess crash is broken from 2.6.10 > > onwards for ppc64. > > > > 2.6.10 onwards: > > #define PTE_SHIFT (17) > > > > < 2.6.10: (which crash understands) > > #define PTE_SHIFT (16) > > The PTE_SHIFT change was orthogonal to the intro of 4-level page tables? > You would think that they would be tied together, no? PTE_SHIFT is orthogonal to 4-level changes and it happened in 2.6.10. My point is, "crash" wouldn't work for kernels between 2.6.10-2.6.14 (even with my changes).