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Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssid
From: |
Cornelia Huck |
Subject: |
Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids |
Date: |
Tue, 28 Nov 2017 15:01:07 +0100 |
On Tue, 28 Nov 2017 14:25:08 +0100
Christian Borntraeger <address@hidden> wrote:
> On 11/28/2017 02:17 PM, Halil Pasic wrote:
> > In the meanwhile I strongly prefer option 1 (at the ccw devices). I've just
> > sent a v2, and IMHO it shows the limitations of machine properties very
> > well.
>
> option 1 is still fine with me.
I still dislike it a lot. Machine properties have their own set of
problems, but I think devices are really the wrong place for a global
property.
>
> >
> >>>
> >>> Halil, do you see any chance to do this for 2.12? There's plenty of
> >>> time left, and I don't think it's too hard. If not, we don't have any
> >>> other option than proposal 3, even though I don't like it a lot.
> >>>
> >
> > I do think we have enough time to do this right. And of course I'm willing
> > to do it right. IMHO the 3 options summarized by Connie are not the only
> > options. But if we go for reworking our QOM composition tree, it will take
> > a lot of discussion. I'm not sure all the required people have enough spare
> > time for that.
> >
> > Halil
>
> I am actually not sure if we really want to have a "user-definable default
> css" anytime
> soon. I think it might really open a can of worms in regard to management
> tooling.
Fair enough, there's really no short-term use case.
> What I want now is to enable vfio-ccw for libvirt and Linux guests and for
> that
> we need to lift the restriction of having vfio not in FE.
This, however, worries me. I don't really consider vfio-ccw ready for
prime time yet. We still need to figure out path handling at the very
least. And I'm still not sure that our non-handling of halt/clear won't
cause major issues with e.g. a storage server error recovery.
Can we flag vfio-ccw as experimental or such in libvirt?
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, (continued)
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Cornelia Huck, 2017/11/27
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Halil Pasic, 2017/11/27
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Dong Jia Shi, 2017/11/27
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Boris Fiuczynski, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Cornelia Huck, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Boris Fiuczynski, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Cornelia Huck, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Christian Borntraeger, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Halil Pasic, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Christian Borntraeger, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids,
Cornelia Huck <=
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Christian Borntraeger, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Cornelia Huck, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Christian Borntraeger, 2017/11/29
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Cornelia Huck, 2017/11/30
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Christian Borntraeger, 2017/11/30
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Halil Pasic, 2017/11/28
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Halil Pasic, 2017/11/23
- Re: [qemu-s390x] [Qemu-devel] [RFC PATCH 1/1] s390x/css: unresrict cssids, Cornelia Huck, 2017/11/23
Re: [qemu-s390x] [RFC PATCH 1/1] s390x/css: unresrict cssids, Shalini Chellathurai Saroja, 2017/11/22