[Bionic][PATCH][SRU 0/3] IBM Boston CPU hardlockup

[Gustavo Walbon]

BugLink: http://bugs.launchpad.net/bugs/1767927

== SRU Justification ==
In few tests of validation of firmware was detected this issue which
triggers a hardlockup that was fixed through an update for firmware
in the skiboot project and this patchset in the kernel side.

All patches were merged on the upstream kernel v4.17-rc1.

Nicholas Piggin (3):
  powerpc/powernv: Handle unknown OPAL errors in opal_nvram_write()
  powerpc/64s: return more carefully from sreset NMI
  powerpc/64s: sreset panic if there is no debugger or crash dump
    handlers

 arch/powerpc/include/asm/hw_irq.h           |  8 ++++
 arch/powerpc/include/asm/paca.h             |  1 +
 arch/powerpc/kernel/asm-offsets.c           |  1 +
 arch/powerpc/kernel/exceptions-64s.S        | 61 +++++++++++++++++++++++++++--
 arch/powerpc/kernel/traps.c                 | 15 ++++++-
 arch/powerpc/platforms/powernv/opal-nvram.c |  4 ++
 6 files changed, 85 insertions(+), 5 deletions(-)

-- 
2.16.0