On Sun, Apr 13, 2025 at 5:36 PM NoisyCoil <[email protected]> wrote: > > 1. Native build on arm64. Installed the build on amd64, replaced the > Rust files (rmeta and libmacros) with ones obtained by cross-compiling > the same kernel with the same config on amd64. Pointing KDIR to the > natively-built /usr/src/linux-headers with the replaced Rust files > correctly builds the OOT module, and the module correctly loads on arm64. > > 2. Cross-build on amd64. Installed the build on arm64, replaced the Rust > files with those from the twin native build. Same as above, the module > builds and correctly loads on arm64.
I am not sure I am following correctly the tests, but are you referring to rebuilding all the Rust artifacts (and not just the host ones)? I think that would still be not generally supported by the kernel, since you still used a different host/target pair (i.e. different toolchains/binaries) -- if I understand correctly, your out-of-tree module ends up using `.rmeta`s that are different than those used for the main kernel since they come from a different build, even if they are all accepted by the Rust compiler since it built them all. Nice to hear that worked here, though :) Thanks a lot for all the tests you performed! I really appreciate it. Cheers, Miguel
