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5e4cc8f6e9
The kernel now includes a script for installing the files needed to build out-of-tree modules, rendering our existing code obsolete. The layout is different, but we were following Ubuntu's non-standard layout when there was no need to. Ubuntu's approach is seemingly designed to save space by symlinking common files across different platforms, but Flatcar doesn't need to do this. More importantly, our previous approach relied on a kernel patch we have carried for years that no longer applies from v6.13. The patch cannot simply be reworked as the underlying mechanism has changed. This clears the last major blocker for the arm64 SDK as the previous approach also relied on implicit execution by QEMU. There has been concern that this may break compatibility with some modules, but I have not seen any issues in practise. I have symlinked `source` to `build` even though we don't install the full kernel sources because this is what Fedora does, and it makes the layout resemble Ubuntu a little more. Should any issues arise, I will gladly work with upstreams to resolve them or otherwise make adjustments. Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>