Since more and more software for s390x assumes the presence of a more recent
processor, we will raise the ISA baseline in 64bit s390x profiles for the
catalyst stage builds and the published binary packages from z900 to z10 (i.e.,
-march=z10).
The z10 Enterprise Class (2097 series) was introduced in February 2008 [1], which essentially means everyone except hardware archaeologists should be fine.
Note that z10 is still a very conservative setting; on modern machines a newer ISA is strongly recommended.
[1] https://en.wikipedia.org/wiki/IBM_Z
- If you are running an installation and emerge locally from source, this does not affect you.
- If you are running an installation and use our binary packages, please make sure you have compatibility for z10 or switch to building from source.
- The 64bit s390x stages will only work with machines compatible with z10.
- This does not affect the 31bit s390 stages or packages.
The z10 Enterprise Class (2097 series) was introduced in February 2008 [1], which essentially means everyone except hardware archaeologists should be fine.
Note that z10 is still a very conservative setting; on modern machines a newer ISA is strongly recommended.
[1] https://en.wikipedia.org/wiki/IBM_Z