Re: Upgrading the minimum required s390x CPU to z10?
On Tue, 31 May 2016, Stephen Powell wrote:
> On Tue, May 31, 2016, at 18:25, Aurelien Jarno wrote:
> >
> > That's indeed the right way to do it (and to fix the issue), but the
> > point is that developers using GCC defaulting to z10 or higher
> Hmm. I see two possibilities here.
>
> (1) The source code package uses a GCC option that specifies that the
> compiled object code is to run on a z10 processor. The fix here is
> rather simple and straightforward: change the GCC option to specify a
> z800/z900, then re-build the package.
IBM upstream has moved the 'enterprise' distributions to the
even later z196 level about three years ago, via the -march
option. They made no secret of their intention to 'end the
life' of earlier hardware main-line support, even if it was
not well communicated outside of 'enterprise' circles
One could speculate why, but ... why bother. Chopping off the
legacy tail gets rid of easy conversions and substitution
replacement by Hercules rather than zPDT, and so drives more
of the remaining 'paying customer' pot either off of Z (to
Power, or distributed)
-- Russ herrold
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