The first 9 patches are a bunch of independent small cleanups
and improvements I've collected. The next 4 are improvements to
POWER9 idle state entry and exit. They significantly change how
we enter idle, now in virtual mode and without ptesync. EC=0 idle
is significantly simplified from there, and does not save anything.
This runs fine on a DD1 test machine, but the hardware has some
problem with performance all over the place, so I'm not able to get
anything meaningful there yet.
Thanks,
Nick
Nicholas Piggin (13):
powerpc/64s: masked interrupt avoid branch
powerpc/64s: masked interrupt avoid instruction
powerpc/64s: masked interrupt returns to kernel so avoid r13 restore
powerpc/64: cleanup __check_irq_replay
powerpc/64s: irq replay merge HV and non-HV paths for doorbell replay
powerpc/64s: irq replay external use the HV handler in HV mode on
POWER9
powerpc/64: remove redundant instruction in interrupt replay
powerpc/64s: irq replay remove spurious irq reason
powerpc/64: runlatch CTRL[RUN] set optimisation
powerpc/64s: idle simplify KVM idle on POWER9
powerpc/64s: idle POWER9 can execute stop without ptesync
powerpc/64s: idle POWER9 can execute stop in virtual mode
powerpc/64s: idle ESL=0 stop can avoid all save/restore overhead
arch/powerpc/include/asm/kvm_book3s_asm.h | 4 +++
arch/powerpc/kernel/entry_64.S | 7 +---
arch/powerpc/kernel/exceptions-64s.S | 19 +++++-----
arch/powerpc/kernel/idle_book3s.S | 60 ++++++++++++++-----------------
arch/powerpc/kernel/irq.c | 47 ++++++++++++------------
arch/powerpc/kernel/process.c | 35 +++++++++++++-----
arch/powerpc/kvm/book3s_hv.c | 37 ++++++++++++++++---
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 32 ++++++++++-------
8 files changed, 143 insertions(+), 98 deletions(-)
--
2.11.0
