[PATCH 2/2] KVM: arm64: Redefine pKVM memory transitions in terms of source/target

[Oliver Upton]

Quentin,

On Fri, Oct 28, 2022 at 09:57:04AM +0000, Quentin Perret wrote:
> Hey Oliver,
> 
> On Friday 28 Oct 2022 at 08:34:48 (+0000), Oliver Upton wrote:
> > Perhaps it is just me, but the 'initiator' and 'completer' terms are
> > slightly confusing descriptors for the addresses involved in a memory
> > transition. Apply a rename to instead describe memory transitions in
> > terms of a source and target address.
> 
> Just to provide some rationale for the initiator/completer terminology,
> the very first implementation we did of this used 'sender/recipient (or
> something along those lines I think), and we ended up confusing
> ourselves massively. The main issue is that memory doesn't necessarily
> 'flow' in the same direction as the transition. It's all fine for a
> donation or a share, but reclaim and unshare become funny. 'The
> recipient of an unshare' can be easily misunderstood, I think.
> 
> So yeah, we ended up with initiator/completer, which may not be the
> prettiest terminology, but it was useful to disambiguate things at
> least.

I see, thanks for the background :) If I've managed to re-ambiguate the
language here then LMK. Frankly, I'm more strongly motivated on the
first patch anyway.

--
Thanks,
Oliver