[Qemu-devel] [PATCH v4 0/6] kvm: Make ioeventfd usable on s390.

[Cornelia Huck]

Here's v4 of the ioeventfd for s390 patch set.

The most interesting change is the addition of MST's cookie patch,
which enhances the virtio-ccw notify hypercall for future performance
optimizations. This patch should go in for 3.9.

I'd love to see the other patches in 3.9 as well; but I wouldn't
mind postponing them to 3.10, your call.

v3 -> v4:
- Pass cookies in virtio-ccw notify hypercall
- Coding style
v2 -> v3:
- Added a patch exporting the virtio-ccw api and use it for the
  diagnose implementation.
- Better naming: We're dealing with virtio-ccw notifications only.
v1 -> v2:
- Move irqfd initialization from a module init function to kvm_init,
  eliminating the need for a second module for kvm/s390.
- Use kvm_io_device for s390 css devices.

Cornelia Huck (5):
  KVM: s390: Export virtio-ccw api.
  KVM: Initialize irqfd from kvm_init().
  KVM: Introduce KVM_VIRTIO_CCW_NOTIFY_BUS.
  KVM: ioeventfd for virtio-ccw devices.
  KVM: s390: Wire up ioeventfd.

Michael S. Tsirkin (1):
  virtio_ccw: pass a cookie value to kvm hypercall

 Documentation/virtual/kvm/api.txt       |  8 ++++++++
 arch/s390/include/uapi/asm/Kbuild       |  1 +
 arch/s390/include/uapi/asm/virtio-ccw.h | 21 +++++++++++++++++++++
 arch/s390/kvm/Kconfig                   |  1 +
 arch/s390/kvm/Makefile                  |  2 +-
 arch/s390/kvm/diag.c                    | 26 ++++++++++++++++++++++++++
 arch/s390/kvm/kvm-s390.c                |  1 +
 drivers/s390/kvm/virtio_ccw.c           | 16 +++++++++-------
 include/linux/kvm_host.h                | 14 ++++++++++++++
 include/uapi/linux/kvm.h                |  3 +++
 virt/kvm/eventfd.c                      | 24 +++++++++++++++---------
 virt/kvm/kvm_main.c                     |  6 ++++++
 12 files changed, 106 insertions(+), 17 deletions(-)
 create mode 100644 arch/s390/include/uapi/asm/virtio-ccw.h

-- 
1.7.12.4