[PATCH 0/6] bt fixes and cleanup for ppc64

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This patch series fixes a couple of issues with bt on ppc64 and also
does some code cleanup.

Patch #1 fixes the broken '-S' option on ppc64. The next patch changes
h/w interrupt stack allocation to dynamic as this field remains unused
in most cases. The next patch renames ppc64_paca_init() function to
ppc64_paca_percpu_offset_init() to reflect what the function actually
does. Patch#4 adds support to process backtrace when the stack pointer
is in an emergency SP. The next patch adds support to print emergency
stack data. And the last patch ensures a variable is used instead of
machdep->machspec to optimize code and improve readability.

Hari Bathini (6):
  ppc64: fix bt for '-S' case
  ppc64: dynamically allocate h/w interrupt stack
  ppc64: rename ppc64_paca_init to ppc64_paca_percpu_offset_init
  ppc64: handle backtrace when CPU is in an emerency stack
  ppc64: print emergency stacks info with 'mach -e'
  ppc64: use a variable for machdep->machspec

 defs.h  |  14 +-
 help.c  |  31 ++++
 ppc64.c | 528 +++++++++++++++++++++++++++++++++++++++-----------------
 3 files changed, 417 insertions(+), 156 deletions(-)

-- 
2.35.3

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