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From: Arnd Bergmann <arnd@arndb.de>
To: Greg KH <greg@kroah.com>
Subject: Re: [PATCH 7/8] ppc64: SPU file system
Date: Tue, 17 May 2005 00:22:56 +0200
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Cc: linuxppc64-dev@ozlabs.org, linux-kernel@vger.kernel.org,
       Paul Mackerras <paulus@samba.org>, Anton Blanchard <anton@samba.org>,
       Benjamin Herrenschmidt <benh@kernel.crashing.org>
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On Dinsdag 17 Mai 2005 00:27, Greg KH wrote:
> Huh?  We can handle syscalls in modules these days pretty simply.  Look
> at how nfs and others do it.

Well afaics, nfs works around this issue by having fs/nfsctl.o always
as a builtin and abstract the calls through a file system using
read/write. That would be Ben's idea again, i.e. not actually
using a system call.

The only widely used module that I'm aware of ever implementing a system
call was the TUX web accelerator that that used a hack in entry.S
and its own dynamic registration.

	Arnd <><