From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751489AbWGYS4i (ORCPT ); Tue, 25 Jul 2006 14:56:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751491AbWGYS4i (ORCPT ); Tue, 25 Jul 2006 14:56:38 -0400 Received: from mail-in-08.arcor-online.net ([151.189.21.48]:1453 "EHLO mail-in-08.arcor-online.net") by vger.kernel.org with ESMTP id S1751489AbWGYS4i (ORCPT ); Tue, 25 Jul 2006 14:56:38 -0400 In-Reply-To: <20060725182833.GE4608@hmsreliant.homelinux.net> References: <20060725174100.GA4608@hmsreliant.homelinux.net> <03BCDC7F-13D9-42FC-86FC-30C76FD3B3B8@kernel.crashing.org> <20060725182833.GE4608@hmsreliant.homelinux.net> Mime-Version: 1.0 (Apple Message framework v750) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <857D7DE9-D1F6-4A66-91F2-BC4D9044D42C@kernel.crashing.org> Cc: linux-kernel@vger.kernel.org, a.zummo@towertech.it, jg@freedesktop.org Content-Transfer-Encoding: 7bit From: Segher Boessenkool Subject: Re: [PATCH] RTC: Add mmap method to rtc character driver Date: Tue, 25 Jul 2006 20:56:14 +0200 To: Neil Horman X-Mailer: Apple Mail (2.750) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >> Similar functionality is already available via VDSO on >> platforms that support it (currently PowerPC and AMD64?) -- >> seems like a better way forward. >> > In general I agree, but that only works if you operate on a > platform that > supports virtual syscalls, and has vdso configured. That's why I said "a better way forward", not "this already works everywhere". > I'm not overly familiar > with vdso, but I didn't think vdso could be supported on all > platforms/arches. Oh? Which can not, and why? Segher