Are there any other systems that use flash-kernel that need to be
considered in the test plan and regression potential sections?
>From a flash-kernel perspective, based on the patch it seems to me that
the decision to use a compressed kernel is outside the package, so I
don't see a regression risk there. But other systems should be
considered when landing the change that actually causes kernel images to
be compressed, I think.
** Changed in: flash-kernel (Ubuntu Xenial)
Status: In Progress => Fix Committed
** Tags added: verification-needed
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https://bugs.launchpad.net/bugs/1384955
Title:
support compressed kernels on arm64
Status in debian-installer package in Ubuntu:
Fix Released
Status in flash-kernel package in Ubuntu:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux-hwe-edge package in Ubuntu:
New
Status in debian-installer source package in Xenial:
Fix Committed
Status in flash-kernel source package in Xenial:
Fix Committed
Status in linux-hwe-edge source package in Xenial:
New
Status in flash-kernel package in Debian:
New
Bug description:
[Impact]
Ubuntu kernels >= hwe-y (4.8) will no longer boot on xgene/uboot systems. The
image size appears to have outgrown the defined firmware region, and u-boot
will error out with a checksum mismatch error. A solution for this is to start
shipping a compressed kernel (Image.gz target). flash-kernel needs updating to
detect a compressed kernel and set the appropriate uImage compression flag.
Similarly, d-i needs updating because it does it's own uImage generation.
[Test Case]
Boot an hwe-y kernel on an xgene/uboot system (APM Mustang, HP ProLiant m400).
[Regression Risk]
The necessary code is in place and in-use for yakkety, and no issues have
been discovered there. The SRU involves clean cherry-picks of that code for d-i
& f-k. The kernel side needs to be modified to pull in the correct version of
flash-kernel for xenial.
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