On Mon, 2020-01-13 at 10:52 +0100, Florian Weimer wrote: > * Kevin Fenzi: > > > Can packages built in this buildroot be used on the same system with > > packages from the normal buildroot? > > Yes, I expect them to be compatible at the interface level because the > flags do not directly alter calling conventions. There could be a > slowdown mixing package versions, though. > > It's also conceivable t hat some packages change struct layout under > #ifdef __AVX2__, and those changes could be externally visible. I do > not think this is likely, though, because these packages would fail to > run with user-compiled -march=native code today. You could detect this automatically by running abidiff against the two arch variants for corresponding builds. Which would be nice. > > Would there be some kind of initial 'mass build' to populate existing > > packages / things that don't rebuild very often? > > Yes, for the VZEROUPPER change, we would have to do an initial rebuild. Can you expand on this change? What are the tradeoffs for disabling vzeroupper? (At least, my gcc thinks it's enabled by default.) - ajax _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
