Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964892AbbLGXnA (ORCPT ); Mon, 7 Dec 2015 18:43:00 -0500 Received: from zeniv.linux.org.uk ([195.92.253.2]:37288 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932433AbbLGXm7 (ORCPT ); Mon, 7 Dec 2015 18:42:59 -0500 Date: Mon, 7 Dec 2015 23:42:52 +0000 From: Al Viro To: Arnd Bergmann Cc: Andy Lutomirski , Linus Torvalds , X86 ML , "linux-kernel@vger.kernel.org" , linux-arch Subject: Re: [PSEUDOPATCH] rename is_compat_task Message-ID: <20151207234252.GI20997@ZenIV.linux.org.uk> References: <11525805.FykVOSlruZ@wuerfel> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <11525805.FykVOSlruZ@wuerfel> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 604 Lines: 16 On Tue, Dec 08, 2015 at 12:16:51AM +0100, Arnd Bergmann wrote: > As far as I know, x86 is the special case here, on all other architectures, > this actually checks the task, and it's impossible to call a system call > of the other kind. sparc uses ta 0x10 for 32bit syscalls and ta 0x6d for 64bit ones. And yes, the same process can call both just fine. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/