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

[Jeremy Fitzhardinge]

H. Peter Anvin wrote:
> I don't know if that would break any programs that are currently
> bypassing the setup.  The existing setup protocol definitely allows
> invoking an entry point which isn't 0x100000 (rather, the 32-bit
> entrypoint is defined by code32_start); I'm not sure how Eric's
> relocatable kernel patches (2.05 protocol) affect that, mostly because I
> haven't seen any boot loaders which actually use it so I can't comment
> on what their code looks like.

Yes, I'd expect that code32_start would point into the ELF text
segment.   You could align things so that the entrypoint is still
actually 0x100000, or bump it up a bit to fit the ELF headers.  I have
to admit I don't quite understand how all that fits together at the moment.

    J

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/