[Crash-utility] ppc: work out irq and fix pte translation display

This patch set updates ppc "irq" and PTE translation display of book3e. - Support "irq" command for recent kernel The ppc's "irq" could not work well for recent kernel at all because ppc_init() always made SIZE(irq_desc_t) invalid by itself. And also, "irq" options were not supported entirely. Stash legacy ppc_dump_irq() behind generic_dump_irq() so that "irq" works on recent kernel and follow toward mainline updates lightly by using generic irq functions. - Fix PTE translation for book3e Although book3e uses multiple PTE bits for one attribute, ppc_translate_pte() can not handle such attributes well. And further privilege (kernel) RW protection bit assign of book3e are different from user's ones. Fix and add these translation features in ppc_translate_pte(). - results of update Before: irq can not work at all. crash> help -m | grep dump_irq dump_irq: ppc_dump_irq() crash> irq irq: cannot determine number of IRQs After: "irq" command work well crash> irq 36 IRQ: 36 STATUS: 24004 (IRQ_LEVEL) HANDLER: ebc08004 typename: c07c7044 " OpenPIC " startup: c00ca754 <default_startup> shutdown: c00ca6f0 <default_shutdown> enable: c00ca7b8 <default_enable> disable: c00ca5a8 <default_disable> : ACTION: eac56e80 handler: c043e398 <serial8250_interrupt> flags: 8080 name: c07c4534 "serial" dev_id: ebe3bec0 next: 0 DEPTH: 0 crash> irq -s CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 16: 0 0 0 0 0 0 0 0 OpenPIC bman-err,qman-err,error_rx,fman-err,fman-err,pme-err 17: 0 0 0 0 0 0 0 0 OpenPIC ds3232 : crash> irq -c 0 -s CPU0 16: 0 OpenPIC bman-err,qman-err,error_rx,fman-err,fman-err,pme-err 17: 0 OpenPIC ds3232 : crash> irq -a IRQ NAME AFFINITY 16 bman-err,qman-err,error_rx,fman-err,fman-err,pme-err 0-7 17 ds3232 0-7 : Before/After: PTE translation is updated like crash> vtop f987c01c [kernel vaddr] PTE PHYSICAL FLAGS ff974241255 ff974000 (PRESENT|USER|RW|COHERENT|DIRTY|ACCESSED) * multiple bits attribute USER or RW(non privilege) is not set in 255h => Fix as below PTE PHYSICAL FLAGS ff974241255 ff974000 (PRESENT|K-RW|COHERENT|DIRTY|ACCESSED) Thanks, Toshi Toshikazu Nakayama (6): ppc: update dump_irq() ppc: rework nr_irqs initialization ppc: add show_interrupts ppc: add get_irq_affinity ppc: fix the handling of PTE flags in translate_pte ppc: handle privilege level rw access from pte defs.h | 7 ++++- ppc.c | 65 ++++++++++++++++++++++++++++++++++++++++++++------------------- 2 files changed, 50 insertions(+), 22 deletions(-)