Re: [uml-devel] Re: skas3 patch breaks ATI video drivers

[Blaisorblade <blaisorblade@yahoo.it>]

On Wednesday 26 January 2005 11:24, Sven Köhler wrote:


Please note this exact sentence:
> > I.e. the compilation problem is not in the kernel module, right?

> > In this 
> > case, the problem is that you have /usr/include/asm symlinked to your
> > kernel's include/asm-i386 directory, which is the wrong setup. However
> > your solution should not give any problem.

> Kernel-Modules are usually compiled against the sources in either
> /usr/src/linux or /lib/modules/<version>/build.

> Take a look at the nvidia-kernel ebuild or other ebuilds that build
> kernel modules. It would be fatal to compile them against the headers in
> /usr/include. On Gentoo, you can have linux26-headers-2.6.7 installed,
> but actually be running a 2.6.10 Kernel - and even worse, it is even
> possible to keep 2.4 headers when running a 2.6 kernel.

Sven, that is clear *and* obvious... what I was *refusing* to believe was that 
a kernel module would be using the "syscall" macro - I explained it by 
thinking it was userspace code.

Maybe that use is even legitimate (1), after all, but it astonished me a bit 
first... and my experience with NVIDIA driver was they also had a userspace 
part to link with X11.

(1) legitimate means "ugly hack which can make sense with non-GPL modules, 
i.e. does not make sense anyway". I'm not flaming ATI / NVIDIA, let's leave 
this duty to people with more spare time.
-- 
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729
http://www.user-mode-linux.org/~blaisorblade


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