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Re: [Qemu-devel] [PATCH RFC 1/1] s390x/ccw: create s390 phb for compat r
From: |
David Hildenbrand |
Subject: |
Re: [Qemu-devel] [PATCH RFC 1/1] s390x/ccw: create s390 phb for compat reasons as well |
Date: |
Fri, 15 Sep 2017 15:37:54 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
On 15.09.2017 15:22, Cornelia Huck wrote:
> On Fri, 15 Sep 2017 15:09:02 +0200
> David Hildenbrand <address@hidden> wrote:
>
>> On 15.09.2017 15:07, Cornelia Huck wrote:
>>> On Fri, 15 Sep 2017 13:57:40 +0200
>>> David Hildenbrand <address@hidden> wrote:
>>>
>>>> As an alternative, simply
>>>>
>>>> diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
>>>> index 0f28ebd162..0f22efc3b6 100644
>>>> --- a/target/s390x/cpu_models.c
>>>> +++ b/target/s390x/cpu_models.c
>>>> @@ -195,6 +195,8 @@ bool s390_has_feat(S390Feat feat)
>>>> return true;
>>>> }
>>>> }
>>>> + if (feat == S390_FEAT_ZPCI)
>>>> + return true;
>>>
>>> Move that out of the CONFIG_KVM #ifdef?
>>>
>>
>> Should not make a difference I think, cpu models are not shielded off
>> for TCG I think (maybe we should fix that, but doesn't look that easy -
>> they have no host model which would allow cpu->model = NULL).
>
> It just looks odd to have it inside the define...
sure, you can then also just move it into kvm_enable() next to the other
ones.
>
>>
>>> (Also, we still have the issue with pci support :/ - depend on
>>> pci_available?)
>>
>> hm ....
>
> Should we maybe disallow compat machines if CONFIG_PCI is off, and
> think about something for the 2.11 machine? Otherwise, I cannot see
> that end well :/
If they required PCI, than that is the only way to do it.
>
> But I'll just draw up a v2 for now.
>
--
Thanks,
David