Subject: Re: Trying to convert old modules to newer kernels
From: Jon Masters <jonathan@jonmasters.org>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: "linux-os (Dick Johnson)" <linux-os@analogic.com>,
       Linux kernel <linux-kernel@vger.kernel.org>
In-Reply-To: <20071220162700.GF2308@csclub.uwaterloo.ca>
References: <Pine.LNX.4.61.0712191503370.4688@chaos.analogic.com>
	 <20071219202323.GH2310@csclub.uwaterloo.ca>
	 <Pine.LNX.4.61.0712191555150.4514@chaos.analogic.com>
	 <20071220150255.GE2308@csclub.uwaterloo.ca>
	 <Pine.LNX.4.61.0712201107300.8261@chaos.analogic.com>
	 <20071220162700.GF2308@csclub.uwaterloo.ca>
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Organization: World Organi[sz]ation Of Broken Dreams
Date: Sat, 29 Dec 2007 09:19:11 -0500
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On Thu, 2007-12-20 at 11:27 -0500, Lennart Sorensen wrote:
> On Thu, Dec 20, 2007 at 11:13:19AM -0500, linux-os (Dick Johnson) wrote:
> > It never gets to the printk(). You were right about the
> > compilation. Somebody changed the kernel to compile with
> > parameter passing in REGISTERS! This means that EVERYTHING
> > needs to be compiled the same way, 'C' calling conventions
> > were not good enough!
> > 
> > FYI, it has been previously shown that passing parameters
> > in registers on register-starved ix86 machines is always
> > a loss, because the registers need to be freed up, either
> > by saving them on the stack or as dummy memory variables.
> > 
> > Now, they've done it to the entire kernel!
> 
> It's a config option.  I think redhat was the first to actually start
> using it on their distributions.  Many distributions don't use it.
> Debian does not use it on their kernels.

And anyway, what's wrong with having the kernel build scripts build the
module for you? ;-)

Jon.


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