From: "Ludovic Courtès" <ludo@gnu.org>
To: 47615@debbugs.gnu.org
Cc: guix-devel@gnu.org
Subject: Re: bug#47615: [PATCH 0/9] Add 32-bit powerpc support
Date: Thu, 06 May 2021 16:38:38 +0200 [thread overview]
Message-ID: <87wnscdj0x.fsf_-_@gnu.org> (raw)
In-Reply-To: <YHs6JzP7vH60iO+2@3900XT> (Efraim Flashner's message of "Sat, 17 Apr 2021 22:42:31 +0300")
Hi Efraim,
Efraim Flashner <efraim@flashner.co.il> skribis:
> On Sat, Apr 17, 2021 at 06:04:02PM +0200, Ludovic Courtès wrote:
[...]
>> 3. OTOH, what will be the status of this architecture? I don’t think
>> new 32-bit PPC hardware is being made (right?), so I guess we
>> probably won’t have substitutes for that architecture. That means
>> it won’t be supported at the same level as other architectures and
>> may quickly suffer from bitrot.
>
> I don't know about new 32-bit powerpc hardware, I think it's only being
> newly created for the embedded and networking space. As far as operating
> systems with support¹ Adélie Linux is the only one I know that's
> actually targeting the machines.
>
> I found that emulation on my desktop (Ryzen 3900XT, 24 threads) is
> faster than building on native hardware (1 core, 1.5GB of RAM, original
> 4200 RPM disk), edging it out on single threaded compiling and doing
> great when it comes to using multiple cores and parallel builds.
> Ignoring how to create an OS image if we just targeted, say, mesa and
> maybe one or two other packages, we could have a core set which doesn't
> change regularly and won't take up too much emulated build time but will
> save days of compile time.
[...]
> The fear of bit-rot is real and I think we should mention in the manual
> (when I actually write the section) that support is best-effort with
> minimal substitutes.
I feel like “best-effort with minimal substitutes” is already more than
I’d be willing to commit to as a maintainer.
We just added POWER9, for which we have actual hardware, and even
getting to this minimal state where we provide a binary tarball required
quite some effort.
Doing the same with 32-bit PowerPC would require us to set up emulation;
we wouldn’t even have real hardware.
All in all, my preference would be to take the patches but not mention
PowerPC 32-bit support anywhere, or at least, not provide substitutes
and binary installation tarball. IOW, few people would know whether it
actually works :-) but tinkerers could still play with it.
WDYT?
Ludo’.
next prev parent reply other threads:[~2021-05-06 14:40 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 12:24 [bug#47615] [PATCH 0/9] Add 32-bit powerpc support Efraim Flashner
2021-04-06 12:32 ` [bug#47615] [PATCH 1/9] gnu: bootstrap: Add support for powerpc-linux Efraim Flashner
2021-04-14 3:51 ` bug#47615: " Chris Marusich
2021-04-14 7:36 ` Vincent Legoll
2021-04-14 13:56 ` [bug#47615] " Efraim Flashner
2021-05-05 1:52 ` bug#47615: " Chris Marusich
2021-05-05 8:51 ` Efraim Flashner
2021-05-06 16:35 ` Ludovic Courtès
2021-04-06 12:32 ` [bug#47615] [PATCH 2/9] gnu: guile-3.0: Fix building on powerpc-linux Efraim Flashner
2021-04-14 4:00 ` bug#47615: " Chris Marusich
2021-04-14 14:00 ` Efraim Flashner
2021-04-06 12:32 ` [bug#47615] [PATCH 3/9] gnu: binutils: Adjust test suite " Efraim Flashner
2021-04-17 19:51 ` bug#47615: [PATCH 0/9] Add 32-bit powerpc support Chris Marusich
2021-04-17 20:02 ` bug#47615: [PATCH 3/9] gnu: binutils: Adjust test suite on powerpc-linux Chris Marusich
2021-04-18 9:23 ` bug#47615: [PATCH 0/9] Add 32-bit powerpc support Efraim Flashner
2021-04-22 5:11 ` bug#47615: [PATCH 3/9] gnu: binutils: Adjust test suite on powerpc-linux Chris Marusich
2021-04-27 7:01 ` [bug#47615] " Efraim Flashner
2021-04-06 12:32 ` [bug#47615] [PATCH 4/9] gnu: mesa: Add support for powerpc-linux Efraim Flashner
2021-04-06 19:29 ` Efraim Flashner
2021-04-06 12:32 ` [PATCH 5/9] gnu: Add mac-fdisk Efraim Flashner
2021-04-06 12:32 ` [bug#47615] [PATCH 6/9] gnu: american-fuzzy-lop: Add support for powerpc-linux Efraim Flashner
2021-04-14 3:25 ` bug#47615: [PATCH 0/9] Add 32-bit powerpc support Chris Marusich
2021-04-06 12:32 ` [bug#47615] [PATCH 7/9] build: qemu-command: Add support for powerpc Efraim Flashner
2021-04-06 17:02 ` Vincent Legoll
2021-04-06 19:17 ` Efraim Flashner
2021-04-06 22:27 ` Vincent Legoll
2021-04-06 12:32 ` [PATCH 8/9] gnu: mercurial: Skip tests on powerpc-linux Efraim Flashner
2021-04-06 12:32 ` [bug#47615] [PATCH 9/9] gnu: nss: " Efraim Flashner
2021-04-06 17:00 ` Vincent Legoll
2021-04-06 19:18 ` Efraim Flashner
2021-04-06 22:31 ` Vincent Legoll
2021-04-07 20:33 ` [PATCH 0/9] Add 32-bit powerpc support Vincent Legoll
2021-04-08 7:00 ` Efraim Flashner
2021-04-17 16:04 ` Ludovic Courtès
2021-04-17 16:51 ` Vincent Legoll
2021-04-17 19:42 ` Efraim Flashner
2021-04-17 20:07 ` Vincent Legoll
2021-05-06 14:38 ` Ludovic Courtès [this message]
2021-05-10 8:20 ` bug#47615: " Efraim Flashner
2021-05-11 20:24 ` Ludovic Courtès
2021-05-24 9:51 ` Efraim Flashner
2021-05-26 14:09 ` Ludovic Courtès
2021-05-31 10:23 ` Tobias Platen
2021-04-22 7:59 ` [bug#47615] [PATCH v2 00/12] " Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 01/12] gnu: bootstrap: Add support for powerpc-linux Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 02/12] gnu: guile-3.0: Fix building on powerpc-linux Efraim Flashner
2021-05-06 14:45 ` bug#47615: [PATCH 0/9] Add 32-bit powerpc support Ludovic Courtès
2021-05-10 8:01 ` Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 03/12] gnu: gcc-boot0: Use 128-bit long-double on powerpc-linux Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 04/12] gnu: binutils: Fix bug in test suite in libiberty Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 05/12] gnu: mesa: Add support for powerpc-linux Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 06/12] gnu: Add mac-fdisk Efraim Flashner
2021-05-06 14:48 ` bug#47615: [PATCH 0/9] Add 32-bit powerpc support Ludovic Courtès
2021-05-06 15:48 ` [bug#47615] " Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 07/12] gnu: american-fuzzy-lop: Add support for powerpc-linux Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 08/12] build: qemu-command: Add support for powerpc Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 09/12] gnu: mercurial: Skip tests on powerpc-linux Efraim Flashner
2021-04-22 16:41 ` [bug#47615] " Maxime Devos
2021-05-06 14:51 ` bug#47615: [PATCH 0/9] Add 32-bit powerpc support Ludovic Courtès
2021-04-22 7:59 ` [PATCH v2 10/12] gnu: nss: Skip tests on powerpc-linux Efraim Flashner
2021-04-22 7:59 ` [PATCH v2 11/12] gnu: zstd: Adjust test suite for 32-bit architectures Efraim Flashner
2021-04-22 7:59 ` [bug#47615] [PATCH v2 12/12] gnu: glib: Disable failing test Efraim Flashner
2021-05-04 15:50 ` [PATCH v2 00/12] Add 32-bit powerpc support Efraim Flashner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://guix.gnu.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87wnscdj0x.fsf_-_@gnu.org \
--to=ludo@gnu.org \
--cc=47615@debbugs.gnu.org \
--cc=guix-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/guix.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).