[PATCH v2 0/9] powerpc: fast interrupt exit bug and misc fixes

[Nicholas Piggin]

This is a bunch of fixes for powerpc next, mostly a nasty hole in fast
interrupt exit code found by Sachin and some other bits along the way
while looking at it.

Since v1:
- Fixed a bisection compile error due to a fix incorrectly going to
  a later patch.
- Fixed the "add a table of implicit soft-masked addresses" patch to
  include the low scv vector range as a soft-masked table entry. scv
  was the original reason for implicit soft masking, and the previous
  version breaks it. My stress testing was using an image without
  scv glibc unfortunately.
- Fixed a bug with the same patch that would restore r12 with SRR1
  rather than HSRR1 in the case of masked hypervisor interrupts after
  searching the soft-mask table. Again unfortunately my stress testing
  was in a guest so no HV interrupts.

Thanks to Michael for noticing these issues.

- Pulled in the hash page fault interrupt handler fix into this series
  to make the dependencies clear (well it's not exactly dependent but
  assertions introduced later make the existing bug crash more often).

This survives overnight stress testing on a bare metal scv capable
system :)

Thanks,
Nick

Nicholas Piggin (9):
  powerpc/64s: fix hash page fault interrupt handler
  powerpc/64e: fix CONFIG_RELOCATABLE build
  powerpc/64e: remove implicit soft-masking and interrupt exit restart
    logic
  powerpc/64s: add a table of implicit soft-masked addresses
  powerpc/64s/interrupt: preserve regs->softe for NMI interrupts
  powerpc/64: enable MSR[EE] in irq replay pt_regs
  powerpc/64/interrupts: add missing kprobe annotations on interrupt
    exit symbols
  powerpc/64s/interrupt: clean up interrupt return labels
  powerpc/64s: move ret_from_fork etc above __end_soft_masked

 arch/powerpc/include/asm/interrupt.h  | 41 +++++++++---
 arch/powerpc/include/asm/ppc_asm.h    |  7 +++
 arch/powerpc/kernel/exceptions-64e.S  | 23 +++----
 arch/powerpc/kernel/exceptions-64s.S  | 64 ++++++++++++++++---
 arch/powerpc/kernel/interrupt_64.S    | 90 ++++++++++++++++++---------
 arch/powerpc/kernel/irq.c             |  1 +
 arch/powerpc/kernel/vmlinux.lds.S     |  9 +++
 arch/powerpc/lib/restart_table.c      | 26 ++++++++
 arch/powerpc/mm/book3s64/hash_utils.c | 24 ++++---
 9 files changed, 212 insertions(+), 73 deletions(-)

-- 
2.23.0