linux-kernel - Re: [PATCH 4/7] Remove the use of

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Message-ID: <44F524EE.90304@zytor.com>
Date:	Tue, 29 Aug 2006 22:41:02 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	Jeff Dike <jdike@...toit.com>,
	Bjoern Steinbrink <B.Steinbrink@....de>,
	Arjan van de Ven <arjan@...radead.org>,
	Chase Venters <chase.venters@...entec.com>,
	Andrew Morton <akpm@...l.org>,
	Russell King <rmk+lkml@....linux.org.uk>, rusty@...tcorp.com.au
Subject: Re: [PATCH 4/7] Remove the use of _syscallX macros in UML

Arnd Bergmann wrote:
> User mode linux uses _syscallX() to call into the host kernel.
> The recommended way to do this is to use the syscall() function
> from libc.

Not really.

syscall() is a horrible botch; it is in fact unimplementable (without 
enormous switch statements) on a number of architectures.

	-hpa
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