ISA 3.0 allows for nested radix translations with minimal to no
involvement of the hypervisor. This should make pseries signficantly
faster on POWER9 pseries instances, as fewer hypercalls are needed to
manage pmap now.
MFC after: 2 weeks
Relnotes: yes
Since we will need to be able to take traps relatively early in the process,
ensure that the hypervisor changes our ILE for us as soon as we are ready.
Sponsored by: Tag1 Consulting, Inc.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
Requirements) systems from the projects/pseries branch. This in principle
includes all IBM POWER hardware released in the last 15 years with the
exception of POWER3-based systems when run in 64-bit mode. The main
development target, however, has been the PAPR logical partition support
that is the default target in KVM on POWER and QEMU -- mileage may vary
on actual hardware at present. Much of the heavy lifting here was done
by Andreas Tobler.
Approved by: re (kib)
