[Bug 2061747] Re: obsolete out-of-tree ivsc dkms in favor of in-tree one

[Andreas Hasenack]

https://bugs.launchpad.net/ubuntu/+source/ipu6-drivers/+bug/2061747/comments/12
changed the tags from "verification-failed" to "verification-done", but
the previous state was "verification-needed", and I will change it back
to that.

I'm very confused about the test case: which combination of dkms and
kernel need to be installed?

The test plan says:
> This is supposed to work together with the updated dkms, which shall also be built along with the kernel itself as linux-modules-ipu6-<variant>. Install the corresponding kernel/modules packages and test camera functions.


These are the involved packages, as far as I can tell:
* linux-image-{virtual,generic}: kernel binary. 6.8.0-31.31 in noble, 6.8.0-32.32 in noble-proposed
* linux-modules-ipu6-generic: binary, 6.8.0-31.31 in noble, 6.8.0-32.32 in noble-proposed. This is the in-tree ipu6 module, right?
* intel-ipu6-dkms: 2023....0ubuntu2 in noble, 2024...0ubuntu1 in noble-proposed. What was accepted for this SRU.

If the SRU is about the dkms package, why does the test plan mention
linux-modules-ipu6-<variant>? Could you please clarify what is to be
tested together?

** Tags removed: verification-done-noble
** Tags added: verification-needed-noble

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https://bugs.launchpad.net/bugs/2061747

Title:
  obsolete out-of-tree ivsc dkms in favor of in-tree one

Status in ipu6-drivers package in Ubuntu:
  Fix Released
Status in ivsc-driver package in Ubuntu:
  Invalid
Status in linux package in Ubuntu:
  In Progress
Status in linux-meta package in Ubuntu:
  In Progress
Status in linux-meta-oem-6.8 package in Ubuntu:
  Invalid
Status in linux-oem-6.8 package in Ubuntu:
  Invalid
Status in ipu6-drivers source package in Noble:
  Fix Committed
Status in ivsc-driver source package in Noble:
  Invalid
Status in linux source package in Noble:
  Fix Committed
Status in linux-meta source package in Noble:
  Fix Committed
Status in linux-meta-oem-6.8 source package in Noble:
  In Progress
Status in linux-oem-6.8 source package in Noble:
  In Progress

Bug description:
  [SRU Justification]

  BugLink: https://bugs.launchpad.net/bugs/2061747

  ========== linux-meta, linux-meta-unstable, linux-meta-oem-6.8
  ==========

  [Impact]

  Starting from kernel v6.8, Intel demands the use of in-tree VSC driver
  instead of the out-of-tree dkms originated from
  https://github.com/intel/ivsc-driver.

  [Fix]

  The main fixes are in kernel & dkms packages. This adds ivsc-modules to
  Provides list of linux-image-generic as other built-in linux-modules-foo
  packages do.

  [Test Case]

  The generated meta package linux-image-generic should then provides
  "ivsc-modules".

  [Where problems could occur]

  Meta package changes only. No real effect but in package dependency.

  [Other Info]

  While the ivsc-dkms obsoletion only happens for kernel >= 6.8, this will
  only be nominated for Unstable/Noble/OEM-6.8.

  ========== ipu6-drivers, linux, linux-oem-6.8 ==========

  [Impact]

  Starting from kernel v6.8, Intel demands the use of in-tree VSC driver
  instead of the out-of-tree dkms originated from
  https://github.com/intel/ivsc-driver.

  [Fix]

  The in-tree vsc driver as of v6.8 still needs a few fixes to achieve
  the same support level to launch Intel IPU6 Camera devices. Commit
  1,3, and 4 are to add supported devices and platforms. Commit 2
  resolves an issue after resumed.

  [Test Case]

  This is supposed to work together with the updated dkms, which shall
  also be built along with the kernel itself as linux-modules-
  ipu6-<variant>. Install the corresponding kernel/modules packages and
  test camera functions.

  [Where problems could occur]

  While this is the first time we switch to in-tree VSC driver, and the
  out-of-tree driver is not aligned at the time of transition and
  probably never will, the provided functions and verified stability
  issues may vary.

  [Other Info]

  The dkms is created to be compatible of multiple kernel versions, yet
  the in-tree vsc driver transitioning should only happen for kernel >=
  v6.8. That is, oem-6.8, noble and linux-unstable will be nominated.

  ========== original bug description ==========

  Starting from kernel v6.8 (yet from the code diff it's v6.6), Intel
  demands the use of in-tree IVSC drivers instead of out-of-tree dkms
  from https://github.com/intel/ivsc-driver.

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