Re: [uml-devel] PATCH [02/03]: eliminate skas_ptrace.h

[Nix <nix@esperi.org.uk>]

On 1 Dec 2006, nix@esperi.org.uk uttered the following:

> On 29 Nov 2006, blaisorblade@yahoo.it uttered the following:
>> arch/um/os-Linux/start_up.o is in USER_OBJS, so it is compiled against host 
>> headers.
>> You cannot _depend_ on them including the SKAS patch, as I said. And that 
>> header is in arch/um/include to be includable by both kernelspace and 
>> userspace files...
>
> Oh, hell, true. The problem is that we'll have to cater for people who
> *have* included the skas headers, including the old ones...

No we won't: kernel building includes things from the Linux source
tree's includes directory, not /usr/include/asm, so what people have in
/usr/include/asm/ptrace.h should be irrelevant.

(I have now reproduced this failure both with and without the skas patch
in the headers installed via `make headers_install'.)

Or is it that userspace stuff includes /usr/include/asm/*, kernelspace
stuff includes include/asm-{whatever} from the kernel tree, but nothing
includes both, so we need *some* things in some third location where
both can see them?

(If that's so, I don't see how my patch built at all. Hm.)

-- 
`The main high-level difference between Emacs and (say) UNIX, Windows,
 or BeOS... is that Emacs boots quicker.' --- PdS

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