On Fri, Jul 22, 2022 at 4:02 AM Daniel P. Berrangé <berrange(a)redhat.com> wrote:
...
Note, in terms of software compatibility with newer CPU baseline,
this has already been widely tested given that RHEL-8 built with
the z13 baseline and RHEL-9 built with z14 baseline.
I do agree though that this feels like the kind of change that
makes sense todo all in one go at a mass rebuild, rather than
drip-feeding per-package.
Given Fedora has lagged waaaaaay behind RHEL in its s390x baseline
for years, I'm not seeing why there's a need to rush this in Fedora
late in the F37 cycle, rather than co-ordinating it for the F38
release to leverage a mass rebuild.
Just to add one more datapoint: we've been building all of the
packages in ELN with the z13 baseline for months now, so we do in fact
already know the impact / build failure risk.