kernel-packages team mailing list archive

[Adam Conrad <adconrad@xxxxxxx>]

In light of petitboot's inability to boot a zImage, I'm closing these
both "Won't Fix" for now.  We can revisit this in a later release if (a)
petitboot is fixed and (b) people are willing to drop support for older
firmware, but it's not worth entertaining right now.

Either way, we should fix all the userspace bits to deal with both image
types and paths, and this has been ongoing elsewhere, no need to track
it here.

** Changed in: debian-installer (Ubuntu Utopic)
       Status: Fix Released => Won't Fix

** Changed in: linux (Ubuntu Utopic)
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1358920

Title:
  Switch kernel to vmlinuz (from vmlinux) on ppc64el

Status in “debian-installer” package in Ubuntu:
  Fix Released
Status in “linux” package in Ubuntu:
  Triaged
Status in “debian-installer” source package in Utopic:
  Won't Fix
Status in “linux” source package in Utopic:
  Won't Fix

Bug description:
  Hi,

  May we discuss/implement switching the kernel image type/filename on
  ppc64el from vmlinu*x* to vmlinu*z* ?

  Problem:
  ------------

  In the current situation, some issues occur because of 1) or 2):

  1) the presence of /boot/vmlinu*x*  w/ no debug symbols  (vmlinux conventionally contains debug symbols)
    - systemtap's search path includes it first, and assumes it has debug symbols, and thus fail on probes involving the "kernel" identifier
    - perf had a similar issue on trusty IIRC, which required specifying /proc/kallsyms by hand (it seems automatic on utopic)
  2) the lack of /boot/vmlinu*z*
    - kdump-config (from makedumpfile): only tests for existence of /boot/vmlinu*z*

  .. and potentially others.

  I believe the limiting factors that kept us using vmlinu*x* was either 
   1) yaboot, or 
   2) lack of zImage support for 64el on kernel.

  Neither should be a problem anymore: for 1) ppc64el uses grub only,
  and for 2) 3.16 contains the zImage-support patchset.

  
  Solution Proposal:
  -------------------------

  I had success in building, booting and installing utopic w/ vmlinuz.

  Attaching the (trivial) patches for the kernel (ubuntu-utopic.git,
  master branch) and debian-installer (src pkg).

  The install w/ mini.iso finished successfully. Although it ended up
  installing vmlinux (it download linux-image from Canonical, I guess),
  it was just a matter of installing the patched linux-image package to
  get vmlinuz installed and booted successfully.

  If there's no objection/more fixes to do, I'd submit the kernel patch
  on the kernel-team mailing list, and check what's needed to get this
  back on trusty (zImage support has 16 patches IIRC).

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