[PATCH 0/8] powerpc/64s: fix and improve machine check handling

[Nicholas Piggin <npiggin@gmail.com>]

First patch is a nasty memory scribble introduced by me :( That
should go into fixes.

The next ones could wait for next merge window. They get things to the
point where misbehaving or buggy guest isn't so painful for the host,
and also get the guest SLB dumping code working (because the host no
longer clears them before delivering the MCE to the guest).

I have a crasher guest vmlinux with a few SLB handling bugs introduced
which now bumbles along okay without bothering the host so much.

I don't know what the picture or high level strategy really is for UE
memory errors in the guest, particularly with PowerVM, so some review
there would be good (I haven't changed anything really in that space
AFAIKS, but as an overall "is this the right way to go" kind of thing).

Thanks,
Nick

Nicholas Piggin (8):
  powerpc/64s/powernv: Fix memory corruption when saving SLB entries on
    MCE
  powerpc/64s/powernv: Allow KVM to handle guest machine check details
  KVM: PPC: Book3S HV: Don't attempt to recover machine checks for FWNMI
    enabled guests
  KVM: PPC: Book3S HV: Ratelimit machine check messages coming from
    guests
  powerpc/64s/powernv: ratelimit harmless HMI error printing
  powerpc/64s/pseries: Add ERAT specific machine check handler
  powerpc/64s: Remove "Host" from MCE logging
  powerpc/64s: tidy machine check SLB logging

 arch/powerpc/include/asm/mce.h            |  1 +
 arch/powerpc/kernel/mce.c                 |  4 +-
 arch/powerpc/kernel/mce_power.c           | 98 +++++++++++++----------
 arch/powerpc/kvm/book3s_hv.c              | 11 ++-
 arch/powerpc/kvm/book3s_hv_ras.c          | 23 ++++--
 arch/powerpc/mm/book3s64/slb.c            | 39 ++++-----
 arch/powerpc/platforms/powernv/opal-hmi.c | 27 ++++---
 arch/powerpc/platforms/powernv/setup.c    |  9 ++-
 arch/powerpc/platforms/pseries/ras.c      |  5 +-
 9 files changed, 129 insertions(+), 88 deletions(-)

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2.23.0