Fedora 22

[Dan Horák]

On Wed, 17 Dec 2014 08:43:49 -0500
Josh Boyer <jwboyer at fedoraproject.org> wrote:

> On Wed, Dec 17, 2014 at 3:00 AM, Timo Schöler <timo at riscworks.net>
> wrote:
> > On 12/16/2014 08:03 PM, Michael J Wolf wrote:
> >
> >>> >> Hi
> >>> >>   We briefly discussed priorities for Fedora 22 and I had
> >>> >> taken an action item to start an email conversation about
> >>> >> this.  So here is what I would like to see for Fedora 22.
> >>> >>
> >>> >> 1)  Get the -mcpu and -mtune flags set properly for the LE
> >>> >> build. Should be -mcpu=power7 -mtune=power8
> >>> >
> >>> > done, all packages that honour the Fedora system wide compiler
> >>> > flags use them, if they don't it's a packaging bug
> >>> >
> >>> >> 2) Have a cloud image available
> >>> >> 3) For BE I would like another subarch.  Same packages as the
> >>> >> current one but tuned for P8.
> >>> >
> >>> > you mean in addition to ppc64p7? can't we just switch ppc64p7
> >>> > from -mcpu=power7 -mtune=power7 to -mcpu=power7 -mtune=power8?
> >>>
> >>> This makes sense to me as it then mirrors what we have in ppc64le
> >>> and it saves having more targets.
> >>
> >> The disadvantage of this would be to cut off users that have Power
> >> 7 systems and optimized code.  So why would people want to
> >> optimize from Fedora 21 to Fedora 22.  You would be taking a big
> >> step back in performance.  I don't want to suggest keeping a
> >> subarch for each type of POWER system out there.  I
> >> was thinking of keeping two.  So when the next POWER arch that
> >> comes out, the Power 7 subarch goes away and you would have Power
> >> 8 and the new Power arch.
> >
> > That would mean that enthusiasts like myself, happily running
> > Fedora on a Power 285 workstation, would lose Fedora?
> 
> Um, what version of Fedora are you running on that?  As far as I know,
> the recent (not End-of-Live) versions of Fedora for POWER don't really
> support anything less than POWER6.

the kernel and user space should work on any Power CPU (some people
successfully updated to F-21 on Mac G5), the limitation is the installer
and how it is invoked


		Dan