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Re: [Qemu-devel] [PATCH v2 00/30] s390x: SMP for TCG


From: David Hildenbrand
Subject: Re: [Qemu-devel] [PATCH v2 00/30] s390x: SMP for TCG
Date: Mon, 16 Oct 2017 09:14:18 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0

On 11.10.2017 14:07, Cornelia Huck wrote:
> On Thu, 28 Sep 2017 22:36:38 +0200
> David Hildenbrand <address@hidden> wrote:
> 
>> This series is based on a couple of other patches floating around on
>> the mailing list (e.g. cleanups and LAP). The fist patches of v1 have
>> been sent as a separate series.
>>
>> As I am working on kvm-unit-tests for SIGP, I discovered some bugs that
>> have been fixed in this series.
>>
>> ======================================
>> I'll be on vacation until 15. October.
>> ======================================
>>
>> This series contains:
>> - properly implement local external interrupts for TCG. Take care of
>>   interrupt masks. Cleanup service interrupt handling.
>> - factor out KVM SIGP handling code into common code
>> - implement missing SIGP orders for TCG handled by the kernel for KVM
>>   (including STOP and RESTART interrupts)
>> - make TCG use the new SIGP code - experimental SMP support for s390x TCG
>> - refactor STFL(E) implementation for TCG
>> - bunch of cleanups
>>
>> Basically all SIGP instructions are fully supported.
>>
>> Thanks to Aurelien Jarno for the initital prototype and showcasing that
>> supporting experimental SMP code can be implemented quite easily.
>>
> 
> Thanks, applied (with some minor changes, see the individual patches).
> 

Thanks, all looks sane.

>> CPU hotplug does still not work correctly.
> 
> Do you have an idea what still needs to be done?
> 

Nope, no idea yet. As the hotplugged CPU starts running but somehow
produces a deadlock, however ordinary onlining/offlining of CPUs works,
this could be a common code problem.

If I find further problems using my kvm-unit-tests/testing, I'll send fixes.

-- 

Thanks,

David



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