Question:where is extract-btf-aarch64.rs came from about build-images HOT 1 CLOSED

Hello this is the author you were looking for 😄

In the Linux kernel source tree, there is extract-vmlinux script that extracts vmlinux from the vmlinuz, the compressed kernel image. I found that it works on x86-64 correctly but it does not work on AMD64 architecture.

Since RedBPF can make use of vmlinux to load kernel BTF info from it, the Dockerfiles run extract-vmlinux on x86-64 architecture.
Also RedBPF can load BTF info from the raw BTF data, so the Dockerfiles run extract-btf-aarch64 on AMD64 architecture.

I admit that extract-btf-aarch64.rs is not generic since it is based on the pattern of the btf_header structure. It is not great but just works for now.

from build-images.