[PATCH 0/5] domain referencing adjustments

[Jan Beulich <jbeulich@xxxxxxxx>]

In the course of preparing v4 of "evtchn: (not so) recent XSAs follow-on"
(which is a contextual prereq to some of the patches here) I've noticed
some slight inefficiencies. I've then also looked for similar patterns
elsewhere.

1: common: don't (kind of) open-code rcu_lock_domain_by_any_id()
2: evtchn: don't pointlessly use get_domain()
3: argo: don't pointlessly use get_domain_by_id()
4: x86: don't pointlessly use get_domain_by_id()
5: x86/mem-sharing: don't pointlessly use get_domain_by_id()

Jan