This patch series implements floating interrupt support for TCG and fixes
STSI so we can remove warnings related to s390x SMP and MTTCG.
KVM code has to be touched in order to factor out the injection routines
into the flic ("s390x/flic: factor out injection of floating interrupts").
Basic testing didn't reveal any problems so far.
With this series I am now able to run fedora 26/27 and Ubuntu 17.10+ with
16 VCPUs (MTTCG) on a 8CPU host, doing a make -j16 in the guest. I got
nasty stalls in the guest beforehand.
Now also included: More flic related caching to avoid recurring
conversions.
Available at: https://github.com/davidhildenbrand/qemu.git s390x-queue
v2 -> v3:
- "s390x: fix size + content of STSI blocks"
- CamelCase the structs/typedefs
- "s390x/tcg: simplify machine check handling"
- Fix wrong assert
David Hildenbrand (18):
s390x/tcg: deliver multiple interrupts in a row
s390x/flic: simplify flic initialization
s390x/tcg: simplify lookup of flic
s390x/tcg: simplify machine check handling
s390x/flic: factor out injection of floating interrupts
s390x/flic: no need to call s390_io_interrupt() from flic
s390x/tcg: tolerate wrong wakeups due to floating interrupts
s390x/flic: make floating interrupts on TCG actually floating
s390x/tcg: implement TEST PENDING INTERRUPTION
s390x/flic: implement qemu_s390_clear_io_flic()
s390x/flic: optimize CPU wakeup for TCG
s390x: fix size + content of STSI blocks
s390x/tcg: STSI overhaul
s390x/tcg: remove SMP warning
configure: s390x supports mttcg now
s390x/tcg: cache the qemu flic in a central function
s390x/kvm: cache the kvm flic in a central function
s390x/flic: cache the common flic class in a central function
configure | 1 +
hw/intc/s390_flic.c | 257 +++++++++++++++++++++++++++++++++++++++--
hw/intc/s390_flic_kvm.c | 84 +++++++++++---
hw/s390x/css.c | 10 +-
hw/s390x/s390-virtio-ccw.c | 4 -
hw/s390x/virtio-ccw.c | 4 +-
include/hw/s390x/s390_flic.h | 57 ++++++++--
target/s390x/cpu.c | 10 --
target/s390x/cpu.h | 99 ++++++++--------
target/s390x/excp_helper.c | 147 +++++++++---------------
target/s390x/helper.h | 1 +
target/s390x/insn-data.def | 1 +
target/s390x/internal.h | 5 -
target/s390x/interrupt.c | 100 ++++------------
target/s390x/kvm-stub.c | 13 ---
target/s390x/kvm.c | 70 +-----------
target/s390x/kvm_s390x.h | 10 +-
target/s390x/misc_helper.c | 266 +++++++++++++++++++++++++++----------------
target/s390x/translate.c | 8 ++
19 files changed, 680 insertions(+), 467 deletions(-)
--
2.14.3
