linux-kernel - Re: [PATCHv2 1/1] Documentation: describe how to add a system call

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Message-ID: <55BC518E.4010102@zytor.com>
Date:	Fri, 31 Jul 2015 21:56:46 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Josh Triplett <josh@...htriplett.org>,
	Andy Lutomirski <luto@...capital.net>
CC:	Kees Cook <keescook@...omium.org>,
	David Drysdale <drysdale@...gle.com>,
	Ingo Molnar <mingo@...nel.org>,
	Linux API <linux-api@...r.kernel.org>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	Shuah Khan <shuahkh@....samsung.com>,
	Jonathan Corbet <corbet@....net>,
	Eric B Munson <emunson@...mai.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <peterz@...radead.org>,
	Vivek Goyal <vgoyal@...hat.com>,
	Alexei Starovoitov <ast@...mgrid.com>,
	David Herrmann <dh.herrmann@...il.com>,
	"Theodore Ts'o" <tytso@....edu>, Milosz Tanski <milosz@...in.com>,
	Fam Zheng <famz@...hat.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCHv2 1/1] Documentation: describe how to add a system call

On 07/31/2015 09:32 PM, Josh Triplett wrote:
> 
> Sure, agreed.  But I really hope we don't create new kernel ABIs that
> involve constructs like that.
> 

It's worth noting I have pushed for auto-marshalling in general for a
long time, not the least to get rid of the awful syscall(3) wrapper.  I
even built a prototype but didn't have time to productize it.

	-hpa


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