On Thu, Aug 11, 2022 at 12:27:56PM +0000, Quentin Perret wrote:

+CC Fuad

On Wednesday 10 Aug 2022 at 14:38:43 (+0000), Sean Christopherson wrote:

quoted

quoted

I understand Sean's suggestion about abstracting, but if the new name
makes it harder to grasp and there isn't really an alternative to memfd
in sight, I'm not so sure I enjoy the tried abstraction here.

ARM's pKVM implementation is potentially (hopefully) going to switch to this API
(as a consumer) sooner than later.  If they anticipate being able to use memfd,
then there's unlikely to be a second backing type any time soon.

Quentin, Will?

Yep, Fuad is currently trying to port the pKVM mm stuff on top of this
series to see how well it fits, so stay tuned.

Good to hear that.

I think there is still
some room for discussion around page conversions (private->shared etc),
and we'll need a clearer idea of what the code might look like to have a
constructive discussion,

That's fine. Looking forward to your feedbacks.

but so far it does seem like using a memfd (the
new private one or perhaps just memfd_secret, to be discussed) + memfd
notifiers is a promising option.

If it still memfd (even memfd_secret), maybe we can use the name
memfd_notifier?

Chao