Re: [PATCH v9 12/22] s390: vfio-ap: sysfs interfaces to configure control domains

From: Pierre Morel
Date: Thu Aug 23 2018 - 06:43:55 EST

On 23/08/2018 12:25, Cornelia Huck wrote:
On Wed, 22 Aug 2018 15:16:19 -0400
Tony Krowiak <akrowiak@xxxxxxxxxxxxx> wrote:

One of the things I suggested in a private conversation with Christian
today was to provide an additional rw sysfs attribute - a boolean - that
whether all usage domains should also be control domains. The default
could be
true. This would allow one to configure guests with usage-only domains
as well
as satisfy the convention.

Would this additional attribute then control "add usage domains to the
list of control domains automatically", or "don't allow to add a usage
domain if it has not already been added as a control domain"?

One thing I'm still unsure about is how libvirt comes into the picture
here. Will it consume the setting, or actively manipulate it?

[In general, I'm not very clear about how libvirt will interact with the
whole infrastructure...]

When I read you it convince me that it is not wise to change anything
that has been already discuss and could impact the Libvirt.


Pierre Morel
Linux/KVM/QEMU in BÃblingen - Germany