Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763304AbZLPXKN (ORCPT ); Wed, 16 Dec 2009 18:10:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761569AbZLPXKG (ORCPT ); Wed, 16 Dec 2009 18:10:06 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:34010 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761507AbZLPXKE (ORCPT ); Wed, 16 Dec 2009 18:10:04 -0500 Subject: Re: [RFC][Patch] IBM Real-Time "SMI Free" mode drive -v2 From: Peter Zijlstra To: Keith Mannthey Cc: lkml , John Stultz In-Reply-To: <1260907788.6521.10.camel@keith-laptop> References: <1260907788.6521.10.camel@keith-laptop> Content-Type: text/plain; charset="UTF-8" Date: Thu, 17 Dec 2009 00:09:24 +0100 Message-ID: <1261004964.21028.521.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 973 Lines: 23 On Tue, 2009-12-15 at 12:09 -0800, Keith Mannthey wrote: > This driver supports the Real-Time Linux (RTL) BIOS feature. The RTL > feature allows non-fatal System Management Interrupts (SMIs) to be > disabled on supported IBM platforms. > > > The Device is presented as a special "_rtl_" table to the OS in the > Extended BIOS Data Area. There is a simple protocol for entering and > exiting the mode at runtime. This driver creates a simple sysfs > interface to allow a simple entry and exit from RTL mode in the > UFI/BIOS. Why not simply always run with these non-fatal SMIs disabled and provide their function through the OS proper? That way you don't need no silly switches and gain consistent platform behaviour. -- 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/