On Mon, Jun 4, 2018 at 7:20 AM, Florian Weimer <fweimer@xxxxxxxxxx> wrote:
= Proposed System Wide Change: i686 Is For x86-64 =https://fedoraproject.org/wiki/Changes/i686_Is_For_x86-64
Owner(s):
* Florian Weimer <fweimer at redhat dot com>
Fedora builds its i686 packages for use on x86-64 systems as multi-lib RPMs.
== Detailed description ==
Currently, the i686 RPM packages are built in such a way that they are
compatible with very old i686 systems, such as the Pentium III. The
only addition over the i686/Pentium Pro baseline is a requirement to
support long NOPs, for Intel CET. However, the majority of
installations of i686 packages is for use on x86_64 systems, as
multi-lib RPMs. Furthermore, there are reports that the i686 kernel
does not run stable on old hardware which is not x86-64-capable (
https://lists.fedoraproject.org/archives/list/x86@xxxxxxxxxx raproject.org/thread/ZHV6I4IEO 7GRYAZ4TUMO5VH2ZHLCNJZQ/
).
This proposal suggests to accept this reality and build the i686
packages in such a way that they require the ISA level of (early)
x86-64 CPUs.
Would you please provide more detail on what problem or problems we are trying to solve? Is this purely for efficiency reasons?
jeff
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