Public bug reported:
glibc provides minimal support for POWER9 since version 2.23.
glibc 2.25 is the first version to provide POWER9 optimizations via
STT_GNU_IFUNC. The optimizations are enabled by default and will be disabled
when using --disable-multi-arch (notice that multi-arch in glibc context is
not the same thing as used by Debian).
However, this feature request is proposing to provide a second glibc build,
configured with --with-cpu=power9 and co-installed with the default glibc
build, but under $(LIBDIR)/power9.
Other distros usually install these under /lib64/power9. Ubuntu may need to
use a different directory due to supporting Debian's multiarch.
The support for this is known to work upstream since glibc 2.23.
So, I think this is just pending changes in the distro build system.
** Affects: glibc (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New
** Tags: architecture-ppc64le bugnameltc-145024 severity-low
targetmilestone-inin1710
** Tags added: architecture-ppc64le bugnameltc-145024 severity-low
targetmilestone-inin1710
** Changed in: ubuntu
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
** Package changed: ubuntu => glibc (Ubuntu)
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https://bugs.launchpad.net/bugs/1702917
Title:
[Feature] P9: Power9 CPU tuned libraries
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