From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752637Ab1GESCp (ORCPT ); Tue, 5 Jul 2011 14:02:45 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:54067 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752239Ab1GESCo (ORCPT ); Tue, 5 Jul 2011 14:02:44 -0400 Date: Tue, 5 Jul 2011 19:02:27 +0100 From: Matthew Garrett To: Jan Beulich Cc: mingo@elte.hu, tglx@linutronix.de, hpa@zytor.com, rtc-linux@googlegroups.com, dannf@hp.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] x86: enable rtc-efi Message-ID: <20110705180227.GD30531@srcf.ucam.org> References: <4E12DBAB020000780004C1B2@nat28.tlf.novell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4E12DBAB020000780004C1B2@nat28.tlf.novell.com> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 05, 2011 at 08:38:51AM +0100, Jan Beulich wrote: > Besides a Kconfig change this just requires creating a respective > platform device. "During runtime, if a PC-AT CMOS device is present in the platform the caller must synchronize access to the device before calling GetTime()." This shouldn't be enabled on PC hardware without locking to avoid races with direct ahrdware access. -- Matthew Garrett | mjg59@srcf.ucam.org