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Re: [qemu-s390x] [PATCH v3 4/9] s390x/cpumodel: msa9 facility

From: Cornelia Huck
Subject: Re: [qemu-s390x] [PATCH v3 4/9] s390x/cpumodel: msa9 facility
Date: Tue, 30 Apr 2019 09:13:54 +0200

On Tue, 30 Apr 2019 09:00:56 +0200
David Hildenbrand <address@hidden> wrote:

> On 30.04.19 07:41, Christian Borntraeger wrote:
> > 
> > 
> > On 29.04.19 21:24, David Hildenbrand wrote:  

> >> Just wondering, why keep the PCKMO ones separate, but not e.g. PCC ?  
> > 
> > Because those can be disabled at the HMC. It is painful to disable 5 
> > elements
> > for LPARs that are configured that way. So I created a group for those. That
> > will allow to disable the full group.
> > (we have the same issue with the  exisiting AES and DEA pckmo functions).  
> Rings a bell, maybe that information would be good to have in the cover
> letter. I guess Conny might want to change the description when picking up:
> "Provide the MSA9 facility (stfle.155). This also contains pckmo
> subfunctions for key wrapping. Keep them in a separate group to disable
> those as a block if necessary. This is for example needed when disabling
> key wrapping via the HMC."

Sure, makes sense to fold that in.

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