Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage

[ebiederm@xmission.com (Eric W. Biederman)]

"H. Peter Anvin" <hpa@zytor.com> writes:

> Eric W. Biederman wrote:
>> 
>> So we won't do this casually and if it there are real problems we will
>> remove the ELF magic number.
>> 
>
> I think we can use ELF-compatible format just fine, but it would make
> more sense to use a non-ELF magic number from the start, instead of
> signalling it with a note.  Since bootloaders need to be aware, anyway,
> they can just detect this magic and treat is as an Linux calling
> convention ELF image, or they can not detect it, and treat it as a
> bzImage.  As a side benefit, we:
>
> a) can use a magic number that contains a jump instruction (to keep the
> non-bootsector happy);
> b) get a proper Linux kernel magic number.

To the best of my knowledge I have already resolved both of those concerns,
in my current code.

Eric
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