On Fri, Dec 20, 2013 at 07:32:11PM -0800, H. Peter Anvin wrote: > thing, as currently built there are megabytes of zeroes in it for no > good reason. Then remove them ;) AFAICS, that's x86 only? What a waste! What's the reason? ALIGN_RODATA? Even if so, vmlinux.gz might be a fair trade-off. > > Even if you don't need the entry code, the additional metadata is > meaningful. Any idea, or maybe even a list of features that would get lost? What are the blossoms of this organically grown structure? Many architectures, even embedded x86, boot happily any ELF kernel. I'm with Eric here: this is not about _not_ supporting bzImage, it's about _do_ support ELF first. As I wrote: if the existing signature is, let's say, impractical, and a new one is needed anyway, why not (detached-) sign vmlinux or vmlinux.gz? Every architecture can benefit from a secure boot or secure kexec that is done right. Torsten
