linux-kernel - Re: [PATCH] x86: Wire up 32-bit direct socket calls

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Message-ID: <49726621.LPTnfQXYGz@wuerfel>
Date:	Fri, 11 Sep 2015 10:46:26 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Andy Lutomirski <luto@...nel.org>, X86 ML <x86@...nel.org>,
	Network Development <netdev@...r.kernel.org>,
	Tulio Magno Quites Machado Filho 
	<tuliom@...ux.vnet.ibm.com>, Andy Lutomirski <luto@...capital.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Alexander Larsson <alexl@...hat.com>,
	Cosimo Cecchi <cosimo@...lessm.com>,
	Dan Nicholson <nicholson@...lessm.com>,
	libc-alpha <libc-alpha@...rceware.org>,
	Rajalakshmi Srinivasaraghavan <raji@...ux.vnet.ibm.com>,
	Linux-Arch <linux-arch@...r.kernel.org>
Subject: Re: [PATCH] x86: Wire up 32-bit direct socket calls

On Friday 11 September 2015 10:24:29 Heiko Carstens wrote:
> 
> FWIW, the s390 approach (ignoring the "new" system calls) is only temporarily.
> I'll enable the seperate calls later when I have time to test everything,
> especially the glibc stuff.

Ok, thanks for clarifying.

> The same is true for the ipc system call. (any reason why the seperate system
> calls haven't been enabled on x86 now as well?)

Agreed, we should split that out on all architectures as well.
Almost the same set of architectures that have sys_socketcall also
have sys_ipc, and the reasons for changing are identical. I don't
think we have any other system calls that are handled like this
on some architectures but not on others. There are a couple of
system calls (e.g. futex) that are also multiplexers, but at
least they do it consistently.

	Arnd
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