From mboxrd@z Thu Jan  1 00:00:00 1970
From: "David S. Miller" <davem@redhat.com>
Subject: Re: [PATCH] sparc64 compatibility netfilter patches
Date: Thu, 02 Jan 2003 01:41:43 -0800 (PST)
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   From: Laszlo Valko <valko@linux.karinthy.hu>
   Date: Thu, 2 Jan 2003 10:31:26 +0100
   
   We could cosmetically beautify it by moving the
   actual implementation from sys_sparc32.c into some other source file
   (maybe net/ipv4/netfilter/nf_sparc32.c?) and call it from sys_sparc32.c,
   this however provides only a maintenance ease. I see that this is
   an important aspect, too.

It isn't even a sparc specific issue, ppc64 mips64 et al. all have
to have a 32-bit translation layer for systemcalls, ioctls, etc.
They basically just copy the sparc64 code in 2.4.x

In 2.5.x we're trying to move this all over into a set of compat.c
files spread over the tree.