GNU bug report logs - #45237
WIP linux-libre 5.10 update - help wanted

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: guix-patches <at> gnu.org
Subject: WIP linux-libre 5.10 update - help wanted
Date: Mon, 14 Dec 2020 11:05:14 -0500

[Message part 1 (text/plain, inline)]

I'm working on updating linux-libre to 5.10.

Using the attached patch, I tried building an ephemeral VM for x86_64:

------
$ guix environment guix -- ./pre-inst-env guix system vm doc/os-config-bare-bones.texi
[...]
building /gnu/store/678f40zf8dpp4w63j8419zad6d7bi32a-linux-modules.drv...
Backtrace:
In srfi/srfi-1.scm:
   586:29 19 (map1 _)
   586:29 18 (map1 _)
   586:29 17 (map1 _)
   586:29 16 (map1 _)
   586:29 15 (map1 _)
   586:29 14 (map1 _)
   586:29 13 (map1 _)
   586:29 12 (map1 _)
   586:29 11 (map1 _)
   586:29 10 (map1 _)
   586:29  9 (map1 _)
   586:29  8 (map1 _)
   586:29  7 (map1 _)
   586:29  6 (map1 _)
   586:29  5 (map1 _)
   586:29  4 (map1 _)
   586:29  3 (map1 _)
   586:29  2 (map1 _)
   586:17  1 (map1 ("virtio_console" "virtio-rng" "btrfs"))
In gnu/build/linux-modules.scm:
    257:5  0 (find-module-file _ _)

gnu/build/linux-modules.scm:257:5: In procedure find-module-file:
kernel module not found "virtio_console" "/gnu/store/hf3v78bnar6pyby40w4xmqc6sjcz4wvb-linux-5.10/lib/modules"
builder for `/gnu/store/678f40zf8dpp4w63j8419zad6d7bi32a-linux-modules.drv' failed with exit code 1
------

Indeed, the virtio_console module is missing. For linux-libre 5.9, it
shows up here within the kernel store item:

'lib/modules/5.9.14/kernel/drivers/char/virtio_console.ko.gz'

The 5.10 kernel configuration has "CONFIG_VIRTIO_CONSOLE=y", as before.

Any ideas? I'm trying to build now with "CONFIG_VIRTIO_CONSOLE=m",
although I don't really know why "CONFIG_VIRTIO_CONSOLE=y" was creating
a module file previously.

[0001-WIP-linux-libre-Update-to-5.10.patch (text/plain, attachment)]

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Message #8 received at 45237 <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: 45237 <at> debbugs.gnu.org
Subject: Re: WIP linux-libre 5.10 update - help wanted
Date: Mon, 14 Dec 2020 12:21:13 -0500

> gnu/build/linux-modules.scm:257:5: In procedure find-module-file:
> kernel module not found "virtio_console" "/gnu/store/hf3v78bnar6pyby40w4xmqc6sjcz4wvb-linux-5.10/lib/modules"

I don't understand why it used to work but started to fail, but changing
the kernel's build config from cONFIG_VIRTIO_CONSOLE=y to
CONFIG_VIRTIO_CONSOLE=m did the trick.

Message #11 received at 45237 <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: 45237 <at> debbugs.gnu.org
Subject: [PATCH] gnu: linux-libre: Update to 5.10.1.
Date: Mon, 14 Dec 2020 21:16:11 -0500

[Message part 1 (text/plain, inline)]

This patch updates linux-libre to 5.10.1.

I tested the basics on x86_64 and i686.

There's one new kernel configuration option I wasn't sure about,
CONFIG_DMA_PERNUMA_CMA.

It's described like this: "Enable this option to get pernuma CMA areas
so that devices like ARM64 SMMU can get local memory by DMA coherent
APIs." [0]

I set it to Yes for all four architectures. What do you think? I don't
really understand what it does and if it's appropriate for a distro
kernel or not.

[0]
https://cateee.net/lkddb/web-lkddb/DMA_PERNUMA_CMA.html

[0001-gnu-linux-libre-Update-to-5.10.1.patch (text/plain, attachment)]

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Message #16 received at 45237-done <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: 45237-done <at> debbugs.gnu.org
Subject: Re: [PATCH] gnu: linux-libre: Update to 5.10.1.
Date: Sat, 19 Dec 2020 16:08:33 -0500

[Message part 1 (text/plain, inline)]

On Mon, Dec 14, 2020 at 09:16:11PM -0500, Leo Famulari wrote:
> From 96c3cbadf743b43ff09f374a710bc1b50922c6ce Mon Sep 17 00:00:00 2001
> From: Leo Famulari <leo <at> famulari.name>
> Date: Mon, 14 Dec 2020 02:17:48 -0500
> Subject: [PATCH] gnu: linux-libre: Update to 5.10.1.
> 
> * gnu/packages/aux-files/linux-libre/5.10-arm.conf,
> gnu/packages/aux-files/linux-libre/5.10-arm64.conf,
> gnu/packages/aux-files/linux-libre/5.10-i686.conf,
> gnu/packages/aux-files/linux-libre/5.10-x86_64.conf: New files.
> * Makefile.am (AUX_FILES): Add them.
> * gnu/packages/linux.scm (linux-libre-5.10-version, deblob-scripts-5.10,
> linux-libre-5.10-pristine-source, linux-libre-5.10-source,
> linux-libre-headers-5.10, linux-libre-5.10): New variables.
> (linux-libre-version, linux-libre-pristine-source, linux-libre-source,
> linux-libre, linux-libre-with-bpf): Update to 5.10.1.

Pushed as 66b5bc319177f54a65085fbc39ee984d387a3329

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