From: Blaisorblade <blaisorblade@yahoo.it>
To: Nix <nix@esperi.org.uk>
Cc: user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] PATCH [02/03]: eliminate skas_ptrace.h
Date: Thu, 7 Dec 2006 13:41:32 +0100 [thread overview]
Message-ID: <200612071341.33101.blaisorblade@yahoo.it> (raw)
In-Reply-To: <87zma7ffin.fsf@hades.wkstn.nix>
On Friday 01 December 2006 22:54, Nix wrote:
> 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.
For userspace files there's anyway a problem, since they _do_
use /usr/include/asm/ptrace.h .
> (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?
Exactly, the third location is arch/um/include for UML (it must be used for
things needed only by userspace files, but is also used for some things which
would be in include/asm-um).
> (If that's so, I don't see how my patch built at all. Hm.)
Bad dependency tracking ? I doubt that however...
--
Inform me of my mistakes, so I can add them to my list!
Paolo Giarrusso, aka Blaisorblade
http://www.user-mode-linux.org/~blaisorblade
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prev parent reply other threads:[~2006-12-07 12:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-26 21:03 [uml-devel] PATCH [02/03]: eliminate skas_ptrace.h Nix
2006-11-29 16:06 ` Blaisorblade
2006-12-01 15:16 ` Nix
2006-12-01 21:54 ` Nix
2006-12-07 12:41 ` Blaisorblade [this message]
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