There's a bunch of problems we hit bringing up fwnmi sreset and mces on QEMU, these apply to PowerVM as well, but I haven't done much testing there and it's much harder.
This series of fixes applies on top of next-test, the machine check reconcile patch won't apply cleanly to previous kernels but it might want to be backported. We can do that after upstreaming. This doesn't solve Ganesh's machine check RMO problem, but at least the reconciling should help squash some warnings. Thanks, Nick Nicholas Piggin (7): powerpc/64: mark emergency stacks valid to unwind powerpc/pseries/ras: avoid calling rtas_token in NMI paths powerpc/64s: Change irq reconcile for NMIs from reusing _DAR to RESULT powerpc/64s: machine check reconcile irq state powerpc/pseries/ras: FWNMI_VALID off by one powerpc/pseries/ras: fwnmi avoid modifying r3 in error case powerpc/pseries/ras: fwnmi sreset should not interlock arch/powerpc/include/asm/firmware.h | 1 + arch/powerpc/kernel/exceptions-64s.S | 29 +++++++++++--- arch/powerpc/kernel/process.c | 31 ++++++++++++++- arch/powerpc/platforms/pseries/ras.c | 54 ++++++++++++++++++-------- arch/powerpc/platforms/pseries/setup.c | 13 +++++-- 5 files changed, 103 insertions(+), 25 deletions(-) -- 2.23.0
