Re: [PATCH v5 0/6] kvm: Make ioeventfd usable on s390.

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On Thu, Feb 28, 2013 at 12:33:15PM +0100, Cornelia Huck wrote:
> v5 of the ioeventfd patch set, this time with a proper return code
> from __diag_virtio_hypercall(), otherwise unchanged.
> 
> v4 -> v5:
> - Proper return code in __diag_virtio_hypercall()
> 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.

The patches look obviously correct to me.

I take no strong position on whether the userspace interface
and the addition of virtio-specific bits in s390 kvm are
acceptable, but looks ok to me too.

Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>

> 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
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