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Re: [Qemu-devel] [RFC v3 0/4] vITS Reset

From: Auger Eric
Subject: Re: [Qemu-devel] [RFC v3 0/4] vITS Reset
Date: Fri, 24 Nov 2017 09:17:20 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0


On 23/11/17 19:01, Christian Borntraeger wrote:
> On 11/23/2017 06:44 PM, Auger Eric wrote:
>> Hi Cornelia, Peter,
>> On 23/11/17 18:14, Cornelia Huck wrote:
>>> On Thu, 23 Nov 2017 17:01:32 +0000
>>> Peter Maydell <address@hidden> wrote:
>>>> On 23 November 2017 at 16:05, Auger Eric <address@hidden> wrote:
>>>>> When using update-linux-headers.sh I get suspicious errors at the end:
>>>>> grep: /tmp/tmp.A5NjLtHOij/include/asm/kvm_virtio.h: No such file or
>>>>> directory
>>>>> sed: can't read /tmp/tmp.A5NjLtHOij/include/asm/kvm_virtio.h: No such
>>>>> file or directory
>>>>> and include/standard-headers/asm-s390/virtio-ccw.h deletedch
>>>>> I would prefer having s390 people checking and testing that.  
>>>> I think the kvm_virtio.h problem should be fixed by
>>>> http://patchwork.ozlabs.org/patch/838230/
>>>> which removes it from the set of headers the script imports.
>>>> Cornelia/Christian -- any idea about the virtio-ccw.h issue ?
>>>> thanks
>>>> -- PMM
>>> I had that commit queued for post-2.11, but I can also send it for 2.11.
>>> The virtio-ccw.h one looks weird... if I run the script on my s390-next
>>> branch against recent-ish Linux master, I just get the SPDX notice
>>> update for virtio-ccw.h.
>> http://patchwork.ozlabs.org/patch/838230/ effectively fixes all issues:
>> - no errors anymore and
>> - no deletion of include/standard-headers/asm-s390/virtio-ccw.h anymore,
>> which is consistent with include/standard-headers/asm-s390/virtio-ccw.h.
> I assume the vITS code is post 2.11? If not, we can certainly submit 3 or 4 
> s390 patches (including 838230) for 2.11.

Yes my understanding was this was material for 2.12 as it depends on
v4.15. So I can wait for 838230 and I will re-post this series as a
PATCH then.

Peter, up to you if you are ready to consider taking the 2 first patches
for 2.11, as their dependencies are resolved and they actually would fix
everything along with v4.15 (since the vITS caches are voided on
individual GITS_BASER write). Only the end-user would have the error
report that full reset is not supported by the host kernel, as the reset
IOTCL is not used.



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