Version 1.2.1 is available upstream. Please consider updating!
It seems that version 1.2.1 is available upstream, while the latest version in the Gentoo tree is 1.0.5. You think this warning is false? Read more about it here.
libibverbs is a library that allows programs to use InfiniBand "verbs"
for direct access to IB hardware from userspace. For more information
on verbs, see the InfiniBand Architecture Specification vol. 1,
especially chapter 11.