On 09.12.20 17:24, Julien Grall wrote:
> Hi,
> 
> On 09/12/2020 16:16, Juergen Gross wrote:
>> This small series is meant as an example how to add further dynamical
>> directories to hypfs. It can be used to replace Paul's current approach
>> to specify ABI-features via domain create flags and replace those by
>> hypfs nodes.
> 
> This can only work if all the ABI-features are not required at the time 
> of creating the domain.

Yes. In case there is some further initialization needed this has to be
done later depending on the setting.

> Those features should also be set only once. Furthermore, HYPFS is so 
> far meant to be optional.

"set once" isn't the point. They should not be able to change after the
domain has been started, and that is covered.

> 
> So it feels to me Paul's approach is leaner and better for the 
> ABI-features purpose.

Depends.

My approach doesn't need any tools side changes after first
implementation when adding new abi-features. And it isn't expanding an
unstable interface.

In the end this is the reason I marked this series as RFC. If using
flags is preferred, fine.


Juergen