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Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU
From: |
Michael Mueller |
Subject: |
Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models |
Date: |
Fri, 20 Feb 2015 20:43:03 +0100 |
On Fri, 20 Feb 2015 18:50:20 +0100
Alexander Graf <address@hidden> wrote:
>
>
>
> > Am 20.02.2015 um 18:37 schrieb Michael Mueller <address@hidden>:
> >
> > On Fri, 20 Feb 2015 17:57:52 +0100
> > Alexander Graf <address@hidden> wrote:
> >
> >> Because all CPUs we have in our list only expose 128 bits?
> >
> > Here a STFLE result on a EC12 GA2, already more than 128 bits... Is that
> > model on the list?
>
> If that model has 3 elements, yes, the array should span 3.
>
> I hope it's in the list. Every model wecare about should be, no?
>
On my list? Yes!
> >
> > address@hidden s390xfac]$ ./s390xfac -b
> > fac[0] = 0xfbfffffbfcfff840
> > fac[1] = 0xffde000000000000
> > fac[2] = 0x1800000000000000
> >>
> >>> I want to have this independent from a future machine of the z/Arch. The
> >>> kernel stores the
> >>> full facility set, KVM does and there is no good reason for QEMU not to
> >>> do. If other
> >>> accelerators decide to just implement 64 or 128 bits of facilities that's
> >>> ok...
> >>
> >> So you want to support CPUs that are not part of the list?
> >
> > The architecture at least defines more than 2 or 3. Do you want me to limit
> > it to an arbitrary
> > size?. Only in QEMU or also in the KVM interface?
>
> Only internally in QEMU. The kvm interface should definitely be as big as the
> spec allows!
Right, now we're on the same page again. That can be taken in consideration.
... Although it's
just and optimization. :-)
Michael
>
> Alex
>
> >
> > Thanks
> > Michael
> >
>
- [Qemu-devel] [RFC PATCH v2 03/15] cpu-model: Introduce stub routine cpu_desc_avail, (continued)
- [Qemu-devel] [RFC PATCH v2 03/15] cpu-model: Introduce stub routine cpu_desc_avail, Michael Mueller, 2015/02/17
- [Qemu-devel] [RFC PATCH v2 07/15] cpu-model/s390: Add cpu model alias definition routines, Michael Mueller, 2015/02/17
- [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Michael Mueller, 2015/02/17
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Alexander Graf, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Michael Mueller, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Alexander Graf, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Michael Mueller, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Alexander Graf, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Michael Mueller, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Alexander Graf, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models,
Michael Mueller <=
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Alexander Graf, 2015/02/20
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Christian Borntraeger, 2015/02/23
- Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Christian Borntraeger, 2015/02/23
Re: [Qemu-devel] [RFC PATCH v2 04/15] cpu-model/s390: Introduce S390 CPU models, Alexander Graf, 2015/02/20
[Qemu-devel] [RFC PATCH v2 11/15] cpu-model/s390: Add QMP command query-cpu-model, Michael Mueller, 2015/02/17
[Qemu-devel] [RFC PATCH v2 09/15] cpu-model/s390: Add KVM VM attribute interface routines, Michael Mueller, 2015/02/17