[Bug 2085453] Re: New upstream core91 release

[Lukas Märdian]

I reviewed the Oracular debdiff. I can confirm it matches the upstream
"release/core91" branch (plus the Debian/Ubuntu additions in debian/).

As stated in the bug description, this is the same version as uploaded to Plucky, but with 3 patches dropped:
"""
-  * Fix build against v6.12-rc2 (LP: #2083994)
-    - backport: [tree-wide] finally take no_llseek out
-    - backports: netdev_features: convert NETIF_F_NETNS_LOCAL to
-      dev->netns_local
-    - backports: move asm/unaligned.h to linux/unaligned.h
"""
That makes it a "upstream backport" using an "ubuntu0" revision:
1:0~91.12629-gite112ecce-0ubuntu0~24.10.1

I wonder if there's any technical reason for dropping those 3 patches? If not, I'd suggest making it a real backport from Plucky, so that we have the exact same version in Plucky and Oracular, which should make maintenance much easier. This would then use a slightly different version string (to match Plucky's "ubuntu1" revision):
1:0~91.12629-gite112ecce-0ubuntu1~24.10.1

Furthermore, there's one slight difference in
debian/patches/0015-backports-genetlink-hold-RCU-in-genlmsg_mcast.patch,
which is linked to bug #2083994, but bug #2085453 (without any other,
logical changes). What's the reason for that? I'd expect that patch to
address exactly one issue, which should be the same in both cases.


Finally, this is a "full-version-backport", moving Oracular from v89 to v91, and I can see the urgency of failing kernel builds. Unfortunately, I couldn't find any SRU exception for backport-iwlwifi-dkms, and I'm unclear of how this change would match the SRU policy. It has been a rejection reason in the past (https://bugs.launchpad.net/ubuntu/+source/backport-iwlwifi-dkms/+bug/2046871/comments/14). So not sponsoring it, yet...

You-Sheng, can you please make a case for how this matches the SRU
policy or point us to the corresponding SRU exception? And potentially
address or explain my other remarks from above?

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https://bugs.launchpad.net/bugs/2085453

Title:
  New upstream core91 release

Status in backport-iwlwifi-dkms package in Ubuntu:
  Fix Released
Status in backport-iwlwifi-dkms source package in Oracular:
  Incomplete
Status in backport-iwlwifi-dkms source package in Plucky:
  Fix Released

Bug description:
  [SRU Justification]

  [Impact]

  New upstream release. For Oracular, we need it to load -94 FW API
  firmware in linux-oem-6.11 kernel.

  Also, need this to make Oracular kernel in next SRU be buildable as
  there is upstream stable update based on v6.11.6 that will break it
  (see bug 2089385)

  [Fix]

  Upstream branch release core91 in
  https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-
  iwlwifi.git/log/?h=release/core91

  [Test Case]

  So far there is no official v6.12 kernel available, but one may install experimental linux-unstable/plucky kernels from https://launchpad.net/~canonical-hwe-team/+archive/ubuntu/experimental-unstable. With that install backport-iwlwifi-dkms from -proposed pocket, and issue:
  ```
  $ sudo dkms install backport-iwlwifi/0~91.12629-gite112ecce -k $(uname -r)
  $ sudo dkms status
  ```
  The installation should complete successfully.

  Install firmware from bug 2085547. With -94 FW depending hardware such as Intel(R) Wi-Fi 7 BE201 installed, the iwlwifi device should be up and running.
  ```
  $ ip a
  ... # should gives basic info of the wlan interface
  $ nmtui # Use nmtui to connect wireless stations
  ```

  [Where problems could occur]

  While this is an initial packaging of Intel backport-iwlwifi core91
  release, expect further issues/updates when necessary.

  [Other Info]

  New release, nominate for Plucky. While this is also needed by
  oem-6.11 for oem projects as a short term solution, nominate for
  Oracular as well.

  ========== original bug report ==========

  https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-
  iwlwifi.git/log/?h=release/core91

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