The rationale for the change is that we want to modularize as much as
possible for the raspi kernel because of limited RAM on that platform.
Hence the difference to the master kernel. That change by itself is not
considered a regression unless you're loosing functionality. Are you?
** Tags added: kern-7467
** Also affects: linux-raspi (Ubuntu Lunar)
Importance: Undecided
Status: New
** Changed in: linux-raspi (Ubuntu Lunar)
Status: New => Incomplete
** Changed in: linux-raspi (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2027983
Title:
CONFIG_MPTCP_IPV6 is no longer enabled in Raspi Lunar in v6.2.0
Status in linux-raspi package in Ubuntu:
Invalid
Status in linux-raspi source package in Lunar:
Incomplete
Bug description:
Hello,
First, thank you for maintaining this kernel package for RPi!
When looking at something else[1], Phil Elwell from Raspbian OS
noticed that in the Ubuntu Raspi Lunar image with a kernel v6.2,
CONFIG_MPTCP_IPV6 is not enabled.
I guess this is because CONFIG_IPV6 is compiled as a module while it
should be inlined according to the source code [2][3]:
CONFIG_IPV6 policy<{'amd64': 'y', 'arm64': 'y', 'armhf': 'y', 'ppc64el':
'y', 's390x': 'y'}>
CONFIG_IPV6 mark<ENFORCED> note<if this is a module we get a module load
for every ipv6 packet>
The note explicitly says that it should not be set as a module.
Note that the previous kernels v5.15 and v5.19 do have CONFIG_IPV6=y
(and CONFIG_MPTCP_IPV6=y) [4]. Also, the last v6.2 "generic" kernel
config is also OK (CONFIG_IPV6=y) [5].
It looks like the v6.2.0-1001.1 [6] was OK but not the next one,
6.2.0-1002.2 [7]. I hope this will help finding the "regression".
Cheers,
Matt
[1] https://github.com/raspberrypi/linux/pull/5487
[2]
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-raspi/+git/lunar/tree/debian.raspi/config/annotations
[3]
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-raspi/+git/lunar/tree/debian.master/config/annotations
[4] https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/
[5] https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux/
[6]
https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/6.2.0-1001.1/arm64-config.flavour.raspi
[7]
https://kernel.ubuntu.com/~kernel-ppa/config/lunar/linux-raspi/6.2.0-1002.2/arm64-config.flavour.raspi
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