These are some fixes I've got so far to sovle hangs and multi hits particularly on P8 with 256MB segments (but can also be reproduced on P9).
I'm not yet sure these solve all the problems, and they need some good review and testing. So far they have been solid for me. Thanks, Nick Nicholas Piggin (4): powerpc/64: add struct int_regs to save additional registers on stack powerpc/64: interrupts save PPR on stack rather than thread_struct powerpc/64s/hash: Fix preloading of SLB entries powerpc/64s/hash: add more barriers for slb preloading arch/powerpc/include/asm/exception-64s.h | 9 ++-- arch/powerpc/include/asm/processor.h | 12 +++--- arch/powerpc/include/asm/ptrace.h | 18 +++++--- arch/powerpc/kernel/asm-offsets.c | 23 ++++++---- arch/powerpc/kernel/entry_64.S | 15 +++---- arch/powerpc/kernel/process.c | 54 ++++++++++++------------ arch/powerpc/kernel/ptrace.c | 4 +- arch/powerpc/kernel/stacktrace.c | 2 +- arch/powerpc/mm/slb.c | 48 ++++++++++++++++++--- 9 files changed, 116 insertions(+), 69 deletions(-) -- 2.18.0
