On 18.12.2024 19:54, Andrew Cooper wrote: > Decompressing the kernel is necessary to inspect the ELF notes, but the > dombuilder will gunzip() secondary modules too. Specifically gunzip(), no > other decompression algorithms. > > This may have been necessary in the dim and distant past, but it is broken > today. Linux specifically supports concatenating CPIO fragments of differing > compressions, and any attempt to interpret it with a single algorithm may > corrupt later parts. > > This was an unexpected discovery while trying to test Xen's gunzip() > logic (Xen as a PVH guest, with a gzipped XTF kernel as dom0). > > Intepreting secondary modules *should* be left as an exersize to the guest.
Nit: "Interpreting" and "exercise" and ... > This reduces work done in dom0. > > This is not expected to cause a practical different to guests these days. ... "difference"? Acked-by: Jan Beulich <jbeul...@suse.com> Jan
