Re: Debian 9 on hercules

[Peter Jansen]

In the mean time the hang problem has been fixed, on both the official Hyperion 
and SDL Fish Hyperion forks, and also on my fork of the Spinhawk Hercules 
(https://github.com/Peter-J-Jansen/spinhawk; a pull request has been issued).

However, installing Debian 9 directly under Hercules still encounters problems 
with both the CTCI and OSA layer 2 and layer 3 devices. (I will investigate 
this further after my vacation, and try to find and fix the problem.) Only the 
installation of Debian 9 under VM works fine. The resulting Debian 9 works 
fine, also when IPL‘d directly under Hercules.

Peter Jansen

Sent from my iPhone

> On 7 Feb 2018, at 01:25, Jerry Heyman  wrote:
> 
> I have downloaded the latest Debian 9 DVD ISO for s390x -
> debian-9.3.0-s390x-DVD-1.iso - and the installation hang 
> issue is still present.  Is there an actual solution for Debian 9, or can
> someone point me to where I can download a 
> Debian 8 s390x ISO?
> 
> Thanks!
> 
> jerry
> 
> 
> 
> --
> Sent from: http://debian.2.n7.nabble.com/debian-s390-f1775584.html
> 

Re: Raising the minimum required s390x CPU to z196?

[Aurelien Jarno]

On 2018-01-31 15:38, Aurelien Jarno wrote:
> Hi all,
> 
> The Debian s390x port currently officially defaults to the z900 ISA.
> That's what our GCC defaults too, but I wouldn't be surprised if a few
> packages use a slightly newer ISA.
> 
> Unfortunately more and more packages require a newer ISA, usually at
> least z196. This is the case of at least nodejs, go and rustc. It should
> be noted that it's not a question of passing the right flag to GCC, but
> rather these packages have their own JIT compiler which has been written
> for a z196 ISA minimum.
> 
> For go we currently use gccgo instead of golang, which is not really
> an optimal solution and prevents many packages to build. For the same
> reason rustc is not available on s390x, which might become problematic
> soon (for example rsvg will require it soon). Finally recent versions
> of nodejs require at least a z196 CPU, so we have to drop all nodejs
> packages if we want to keep the baseline as z900.
> 
> In my opinion we don't really have any other choice than raising the
> minimum ISA to z196, even if this CPU is less than 7 years old. The
> the only other alternative I can think about would be to have people
> committing to maintain patches lowering the minimum ISA for the above
> packages. I started to work on that for go a few months ago, but
> unfortunately that's a huge work as upstream keeps moving.

Note that both hercules and QEMU are able to simulate a z196 CPU, or at
least the facilities used by the Linux kernel and user land when built
for z196.

Aurelien

-- 
Aurelien Jarno  GPG: 4096R/1DDD8C9B
aurel...@aurel32.net http://www.aurel32.net


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Re: Debian 9 on hercules

[Jerry Heyman]

I have downloaded the latest Debian 9 DVD ISO for s390x -
debian-9.3.0-s390x-DVD-1.iso - and the installation hang 
issue is still present.  Is there an actual solution for Debian 9, or can
someone point me to where I can download a 
Debian 8 s390x ISO?

Thanks!

jerry



--
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