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Wed, 13 Aug 2025 14:52:42 -0000 X-Groupsio-URL: https://lists.cip-project.org/g/cip-dev/message/19734 On 13.08.25 15:46, Shivanand Kunijadar wrote: > This patch series enables the delta kernel binary updates along with > rootfs. When rdiff is selected it generates deltas for both kernel and rootfs. > > In the CI, we just change PV value to 2.0 for the second image and there > is no change (code) in the kernel binary at the moment. Do you think building > the second image with RT kernel is appropriate here to verify delta > kernel updates? Right, we may need a better delta example for the kernel. I originally chose that (prior to delta updates) for having changes both in the kernel and the rootfs that have to correlate. But we actually already have a link because the ID or hash of the rootfs needs to be stored in the UKI and, thus, updated in lock-step with the image. For delta demonstration, we likely need a small change in the rootfs only. Maybe enable/disable CONFIG_IMAGE_TESTING / kas/opt/test.yml? Or something artificial and truly small, but that would clutter our menu... Jan -- Siemens AG, Foundational Technologies Linux Expert Center