Re: [Qemu-devel] [PATCH v1 0/5] s390x/vfio: VFIO-AP interrupt control interception

[David Hildenbrand <david@redhat.com>]

On 02.11.18 11:30, Pierre Morel wrote:
> The S390 APQP/AQIC instruction can be intercepted by the host
> to configure the AP queues interruption handling for and handle
> the ISC used by the host and the guest and the indicator address.
> 
> This patch series define the AQIC feature in the cpumodel,
> extend the APDevice type for per queue interrupt handling,
> intercept the APQP/AQIC instruction, uses the S390 adapter interface
> to setup the adapter and use a VFIO ioctl to let the VFIO-AP
> driver handle the host instruction associated with the intercepted
> guest instruction.
> 
> This patch serie can be tested with the Linux/KVM patch series
> for the VFIO-AP driver: "s390: vfio: ap: Using GISA for AP Interrupt"
> 
> Pierre Morel (5):
>   s390x/vfio: ap: Linux uapi VFIO place holder
>   s390x/cpumodel: Set up CPU model for AQIC interception
>   s390x/vfio: ap: Definition for AP Adapter type
>   s390x/vfio: ap: Intercepting AP Queue Interrupt Control
>   s390x/vfio: ap: Implementing AP Queue Interrupt Control
> 
>  hw/vfio/ap.c                    | 100 ++++++++++++++++++++++++++++++++
>  include/hw/s390x/ap-device.h    |  55 ++++++++++++++++++
>  include/hw/s390x/css.h          |   1 +
>  linux-headers/linux/vfio.h      |  22 +++++++
>  target/s390x/cpu_features.c     |   1 +
>  target/s390x/cpu_features_def.h |   1 +
>  target/s390x/cpu_models.c       |   1 +
>  target/s390x/kvm.c              |  20 +++++++
>  8 files changed, 201 insertions(+)
> 

I had a very quick high level look at it and it seems to be in general fine.

-- 

Thanks,

David / dhildenb