| Message ID | 20201128070728.825934-1-npiggin@gmail.com |
|---|---|
| Headers | show |
| Series | powerpc/64s: fix and improve machine check handling | expand |
On Sat, 28 Nov 2020 17:07:20 +1000, Nicholas Piggin wrote: > 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). > > [...] Patch 1 applied to powerpc/fixes. [1/8] powerpc/64s/powernv: Fix memory corruption when saving SLB entries on MCE https://git.kernel.org/powerpc/c/a1ee28117077c3bf24e5ab6324c835eaab629c45 cheers
On Sat, 28 Nov 2020 17:07:20 +1000, Nicholas Piggin wrote: > 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). > > [...] Patches 2-8 applied to powerpc/next. [2/8] powerpc/64s/powernv: Allow KVM to handle guest machine check details https://git.kernel.org/powerpc/c/0ce2382657f39ced2adbb927355360c3aaeb05f8 [3/8] KVM: PPC: Book3S HV: Don't attempt to recover machine checks for FWNMI enabled guests https://git.kernel.org/powerpc/c/067c9f9c98c8804b07751994c51d8557e440821e [4/8] KVM: PPC: Book3S HV: Ratelimit machine check messages coming from guests https://git.kernel.org/powerpc/c/1d15ffdfc94127d75e04a88344ee1ce8c79f05fd [5/8] powerpc/64s/powernv: Ratelimit harmless HMI error printing https://git.kernel.org/powerpc/c/f4b239e4c6bddf63d00cd460eabb933232dbc326 [6/8] powerpc/64s/pseries: Add ERAT specific machine check handler https://git.kernel.org/powerpc/c/82f70a05108c98aea4f140067c44a606262d2af7 [7/8] powerpc/64s: Remove "Host" from MCE logging https://git.kernel.org/powerpc/c/4a869531ddbf5939c45eab6ff389e4e58c8ed19c [8/8] powerpc/64s: Tidy machine check SLB logging https://git.kernel.org/powerpc/c/865ae6f27789dcc3f92341d935f4439e8730a9fe cheers
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(-)