Re: [Crash-utility] [PATCH} crash 4.0-2.8 fixes to make it workonx86_64 for 2.6.14

Ah, damn it -- it would also be printed later on in readmem() if uvtop() fails: while (size > 0) { switch (memtype) { case UVADDR: if (!uvtop(CURRENT_CONTEXT(), addr, &paddr, 0)) { if (PRINT_ERROR_MESSAGE) error(INFO, INVALID_UVADDR, addr, type); goto readmem_error; } break; That's probably where it's happening... I would guess that x86_64_uvtop() needs to immediately recognize if the new VM scheme is in place, and if so it should veer off to a new "x86_64_uvtop_lev4()" routine. We definitely want to keep the current one untouched, while the new one must need a 4th layer of page table translation. Note that x86_64_kvtop() has the extra FILL_PML4() stuff before the 3-level breakdown -- I guess that's why vmalloc addresses still translate. But there must be another layer user virtual addresses need to go through. Dave