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Re: mips64el in testing



On 2016-03-05 17:40, Emilio Pozuelo Monfort wrote:
> Hi,

Hi,

> So mips64el got into unstable on ftpmaster a while ago. I suppose you would like
> for it to get into testing and released with Stretch. Is that right?

Yes, that is right.

> If so, db5.3 needs to get built, as that's the last package that got imported
> and hasn't been rebuilt since:
> 
> https://ftp-master.debian.org/users/mhy/mipsel64import.txt

Ok, we'll look at this one.

> Also, it'd be good if you could give us information on what the status of the
> port is, e.g. upstream support on the kernel, libc and toolchain, what DDs / DMs
> are behind the port, etc.

The mips64el port is the natural evolution of the mipsel port,
following the tendency of all architectures to go to 64 bits. This
breaks the 2GiB virtual memory limit from 32-bit MIPS, which
unfortunately is triggered more and more often on the build daemons.
At the same time this port also takes the opportunity to increase the
required instruction set from MIPS II to MIPS64R2 for a better use of
the hardware. This port we'll eventually replaces the mipsel port,
though we don't have any plan to drop it yet. 

The upstream support is basically the same than for 32-bit MIPS. MIPS
hardware is 64-bit capable for a lot of time, and in fact all the Debian
build daemons and porterboxes have been running a 64-bit kernel for more
than 10 years. There is no change on that side. The 64-bit toolchain was
already available in the mipsel port using the tri-arch libraries.

The Debian Developers (Cc:ed) behind this port are:
- Andi Barth <aba@debian.org>
- Anibal Monsalve Salazar <anibal@debian.org>
- Aurelien Jarno <aurel32@debian.org>
- Aron Xu <aron@debian.org>
- James Cowgill <jcowgill@debian.org>
- Yunqiang Su <syq@debian.org>
In addition there are regular help from non-DD people from Imagination
Technologies.

The port itself is in a good shape, that said we are still lacking DSAed
build daemons (and thus autosigning). It is built mostly on 4 machines,
3 hosted in China by Aron Xu and 1 hosted in Germany by Andi Barth. In
addition the mipsel build daemons also build mips64el packages as the
lowest priority. The porterbox etler.d.o has both mipsel and mips64el
chroots. We are waiting for Octeon III hardware sponsored by Imagination
Technologies that will be used for the 3 MIPS ports (they are able to 
boot on both endianness). That is the last blocker on our side and that
is why we haven't requested to get mips64el into testing yet.

Aurelien

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

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