[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH v3 6/7] s390x/kvm: handle AP instruction interce

From: Halil Pasic
Subject: Re: [Qemu-devel] [PATCH v3 6/7] s390x/kvm: handle AP instruction interception
Date: Fri, 6 Apr 2018 14:32:49 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 04/06/2018 02:09 PM, Halil Pasic wrote:
> Yes it is conceptually ugly. I'm 100% with you. That's why it should go
> away soon. From the practicality perspective however I would even argue that 
> it's
> helpful to the user: tells 'oops you have forgotten something'. IMHO
> it's a shortcut of type make the problem smaller. Regarding what is
> harder and what is easier: the author is probably the most fit to decide
> that. If it is harder, it makes no sense, as this is all about cutting
> corners.

I've just realized, I have overlooked something. And that is using
what libvirt calls host-model and host-passthrough mode. There the
user does not explicitly ask for ap=on. So the user would get slapped
in the face by this 'needs vfio-ap device' message (AFAIU) after
upgrading stuff (without even knowing that AP was added) which is
extremely ugly! I need to think about this some more.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]