linux-kernel - Re: [PATCH 59/60] microblaze_v4: syscall

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Message-ID: <4863CB8A.7000204@zytor.com>
Date:	Thu, 26 Jun 2008 10:02:02 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	monstr@...nam.cz, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, stephen.neuendorffer@...inx.com,
	John.Linn@...inx.com, john.williams@...alogix.com, matthew@....cx,
	will.newton@...il.com, drepper@...hat.com,
	microblaze-uclinux@...e.uq.edu.au, grant.likely@...retlab.ca,
	linuxppc-dev@...abs.org, vapier.adi@...il.com,
	alan@...rguk.ukuu.org.uk, Michal Simek <monstr@...str.eu>
Subject: Re: [PATCH 59/60] microblaze_v4: syscall_table.S and unistd.h

Arnd Bergmann wrote:
> 
> You still set __NR_fork. There is no point defining the number if you
> can't actually call the syscall in the first place.
> 

Worse, it is actively *harmful* to set the number; klibc or anything 
that uses similar kinds of scripts for portability will see the symbol 
and think the system call is available.

	-hpa
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