Draft to be published ASAP, feedback welcome...
Title: Gentoo raises s390x baseline to z10 Author: Andreas K. Hüttel <dilfri...@gentoo.org> Posted: xxxx-xx-xx Revision: x News-Item-Format: 2.0 Display-If-Profile: default/linux/s390/17.0/s390x Display-If-Profile: default/linux/s390/17.0/s390x/systemd/merged-usr Display-If-Profile: default/linux/s390/23.0/split-usr/s390x Display-If-Profile: default/linux/s390/23.0/s390x Display-If-Profile: default/linux/s390/23.0/s390x/systemd Since more and more software for s390x assumes the presence of a more recent processor, we will raise in 64bit s390x profiles the ISA baseline for the catalyst stage builds and the published binary packages from z900 to z10 (i.e., -march=z10). * 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 -- Andreas K. Hüttel dilfri...@gentoo.org Gentoo Linux developer (council, toolchain, base-system, perl, libreoffice)
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