[Xen-devel] Re: [RFC, PATCH 5/24] i386 Vmi code patching

[Anthony Liguori <aliguori@xxxxxxxxxx>]

Chris Wright wrote:
> * Andi Kleen (ak@xxxxxxx) wrote:
>   
> > The disassembly stuff indeed doesn't look like something
> > that belongs in the kernel.
> >     
> Strongly agreed.  The strict ABI requirements put forth here are not
> in-line with Linux, IMO.  I think source compatibility is the limit of
> reasonable, and any ROM code be in-tree if something like this were to
> be viable upstream.
>   
Hi Chris,

Would you have less trouble if the "ROM" were actually more like a 
module?  Specifically, if it had a proper elf header and symbol table, 
used symbols as entry points, and was a GPL interface (so that ROM's had 
to be GPL)?  Then it's just a kernel module that's hidden in the option 
ROM space and has a C interface.
I know you end up losing the ability to do crazy inlining of the ROM 
code but I think it becomes a much less hairy interface that way.
Regards,

Anthony Liguori

> thanks,
> -chris
>   
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