Re: [PATCH v5 1/4] domctl: introduce a new domain create flag, XEN_DOMCTL_CDF_evtchn_fifo, ...

[Jan Beulich <jbeulich@xxxxxxxx>]

On 07.12.2020 11:04, Julien Grall wrote:
> On 07/12/2020 09:17, Jan Beulich wrote:
>> On 04.12.2020 12:45, Julien Grall wrote:
>>> You are making the assumption that the customer would have the choice to
>>> target a specific versions of Xen. This may be undesirable for a cloud
>>> provider as suddenly your customer may want to stick on the old version
>>> of Xen.
>>
>> I've gone from you saying "You really need a solution that can restore
>> the old VM environment, at least temporarily, for that customer." The
>> "temporarily" to me implies that it is at least an option to tie a
>> certain guest to a certain Xen version for in-guest upgrading purposes.
>  >
>> If the deal with the customer doesn't include running on a certain Xen
>> version, I don't see how this could have non-temporary consequences to
>> the cloud provider.
> 
> I think by "you", you mean Paul and not me?

Oh, right, I didn't pay attention to who wrote that text. Sorry.

Jan