Re: [RFC 00/19] KVM: s390/crypto/vfio: guest dedicated crypto adapters

Cornelia Huck
2017-11-17T09:49:09Z

On Thu, 16 Nov 2017 18:41:29 -0500
Tony Krowiak <akrowiak@linux.vnet.ibm.com> wrote:

> On 11/16/2017 11:49 AM, Cornelia Huck wrote:
> > On Thu, 16 Nov 2017 10:23:25 -0500
> > Tony Krowiak <akrowiak@linux.vnet.ibm.com> wrote:
> >
> >> On 11/14/2017 08:57 AM, Cornelia Huck wrote:
> >>> On Tue, 31 Oct 2017 15:39:09 -0400
> >>> Tony Krowiak <akrowiak@linux.vnet.ibm.com> wrote:
> >>>
> >>>> On 10/13/2017 01:38 PM, Tony Krowiak wrote:
> >>>> Ping
> >>>>> Tony Krowiak (19):
> >>>>> KVM: s390: SIE considerations for AP Queue virtualization
> >>>>> KVM: s390: refactor crypto initialization
> >>>>> s390/zcrypt: new AP matrix bus
> >>>>> s390/zcrypt: create an AP matrix device on the AP matrix bus
> >>>>> s390/zcrypt: base implementation of AP matrix device driver
> >>>>> s390/zcrypt: register matrix device with VFIO mediated device
> >>>>> framework
> >>>>> KVM: s390: introduce AP matrix configuration interface
> >>>>> s390/zcrypt: support for assigning adapters to matrix mdev
> >>>>> s390/zcrypt: validate adapter assignment
> >>>>> s390/zcrypt: sysfs interfaces supporting AP domain assignment
> >>>>> s390/zcrypt: validate domain assignment
> >>>>> s390/zcrypt: sysfs support for control domain assignment
> >>>>> s390/zcrypt: validate control domain assignment
> >>>>> KVM: s390: Connect the AP mediated matrix device to KVM
> >>>>> s390/zcrypt: introduce ioctl access to VFIO AP Matrix driver
> >>>>> KVM: s390: interface to configure KVM guest's AP matrix
> >>>>> KVM: s390: validate input to AP matrix config interface
> >>>>> KVM: s390: New ioctl to configure KVM guest's AP matrix
> >>>>> s390/facilities: enable AP facilities needed by guest
> >>> I think the approach is fine, and the code also looks fine for the most
> >>> part. Some comments:
> >>>
> >>> - various patches can be squashed together to give a better
> >>> understanding at a glance
> >> Which patches would you squash?
> > See the patches. As a rule, I find it more sensible to introduce
> > interface + implementation together rather than separate.
> The only patch that introduces an interface separate from the implementation
> is patch7:
>
> KVM: s390: introduce AP matrix configuration interface
>
> I've squashed that with patch8, s390/zcrypt: support for assigning adapters to matrix mdev

Sounds good!