From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754870Ab2ISEuw (ORCPT ); Wed, 19 Sep 2012 00:50:52 -0400 Received: from mail-we0-f174.google.com ([74.125.82.174]:53211 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753118Ab2ISEuv (ORCPT ); Wed, 19 Sep 2012 00:50:51 -0400 Date: Wed, 19 Sep 2012 06:50:39 +0200 From: Richard Cochran To: John Stultz Cc: Andy Lutomirski , linux-kernel , Tony Luck , Paul Mackerras , Benjamin Herrenschmidt , Martin Schwidefsky , Paul Turner , Steven Rostedt , Prarit Bhargava , Thomas Gleixner Subject: Re: [PATCH 0/6][RFC] Rework vsyscall to avoid truncation/rounding issue in timekeeping core Message-ID: <20120919045038.GA2248@netboy.at.omicron.at> References: <1347919501-64534-1-git-send-email-john.stultz@linaro.org> <5057BE59.3050903@linaro.org> <20120918180200.GA2281@netboy.at.omicron.at> <5058BD9E.30909@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5058BD9E.30909@linaro.org> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 18, 2012 at 11:29:50AM -0700, John Stultz wrote: > I believe its mostly historical, but on some architectures that > history has become an established ABI, making it technical. Fine, but what do you mean by "ABI?" Are you talking about magic addresses for functions? Without knowing the dirty details, what I imagine is a jump/branch from the arch-specific code into the common implementation. Can that be done? Thanks, Richard