[PATCH v5 0/7] Powerpc/Watchpoint: Few important fixes

[Ravi Bangoria]

v4: https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-September/197621.html

v4->v5:
 - patch 1,2,3/7: Split v4 patch1 into three differnet patches.
   * 1st patch to replace hardcoded watchpoint length with macros
   * 2nd patch that fixes the unaligned watchpoint issue
   * 3rd patch that fixes ptrace code that mucks around address/len
 - patch 3/7: v4 patch1 was creating a regression in watchpoint length
   calculation in ptrace code. Fixed that.
 - patch 7/7: Disabled MODE_RANGE and 512 byte testcases for 8xx. (Build
   tested only)
 - patch 7/7: Unaligned watchpoints are not supported with DABR. Test
   unaligned watchpoint only when DAWR is present.

Ravi Bangoria (7):
  Powerpc/Watchpoint: Introduce macros for watchpoint length
  Powerpc/Watchpoint: Fix length calculation for unaligned target
  Powerpc/Watchpoint: Fix ptrace code that muck around with address/len
  Powerpc/Watchpoint: Don't ignore extraneous exceptions blindly
  Powerpc/Watchpoint: Rewrite ptrace-hwbreak.c selftest
  Powerpc/Watchpoint: Add dar outside test in perf-hwbreak.c selftest
  Powerpc/Watchpoint: Support for 8xx in ptrace-hwbreak.c selftest

 arch/powerpc/include/asm/hw_breakpoint.h      |   9 +-
 arch/powerpc/kernel/dawr.c                    |   6 +-
 arch/powerpc/kernel/hw_breakpoint.c           | 119 ++--
 arch/powerpc/kernel/process.c                 |   3 +
 arch/powerpc/kernel/ptrace.c                  |  16 +-
 arch/powerpc/xmon/xmon.c                      |   2 +-
 .../selftests/powerpc/ptrace/perf-hwbreak.c   | 111 +++-
 .../selftests/powerpc/ptrace/ptrace-hwbreak.c | 581 +++++++++++-------
 8 files changed, 582 insertions(+), 265 deletions(-)

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2.21.0