On Di, 12.09.23 17:32, Jan Hendrik Farr (kernel@xxxxxxxx) wrote: > >> The format itself is rather simple. It's just a PE file (as required > >> by the UEFI spec) that contains a small stub application in the .text, > >> .data, etc sections that is responsible for invoking the contained > >> kernel and initrd with the contained cmdline. The kernel image is > >> placed into a .kernel section, the initrd into a .initrd section, and > >> the cmdline into a .cmdline section in the PE executable. > > > > How does this interact with the existing EFI stub support in > > linux? > > It doesn't. During normal boot of a UKI the stub in it is used > (systemd-stub, see: > https://www.freedesktop.org/software/systemd/man/systemd-stub.html). The > kernel's own EFI stub will still be in the binary inside the .linux > section but not used. That's not true actually, if the inner kernel supports the EFI stub then systemd-stub actually defers to that for kernel execution. It's more portable that way, since the kernel then deals with the differences in the boot protocol on different architectures. Lennart -- Lennart Poettering, Berlin _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
