Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756990AbYBEEuV (ORCPT ); Mon, 4 Feb 2008 23:50:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753556AbYBEEuF (ORCPT ); Mon, 4 Feb 2008 23:50:05 -0500 Received: from mga10.intel.com ([192.55.52.92]:27183 "EHLO fmsmga102.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753408AbYBEEuB (ORCPT ); Mon, 4 Feb 2008 23:50:01 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.25,304,1199692800"; d="scan'208";a="295853421" Message-ID: <47A7EA88.3020404@linux.intel.com> Date: Mon, 04 Feb 2008 20:48:08 -0800 From: Arjan van de Ven User-Agent: Thunderbird 1.5.0.14 (Windows/20071210) MIME-Version: 1.0 To: "Siddha, Suresh B" CC: tglx@linutronix.de, mingo@elte.hu, linux-kernel@vger.kernel.org Subject: Re: issue with patch "x86: no CPA on iounmap" References: <20080205011357.GA14712@linux-os.sc.intel.com> In-Reply-To: <20080205011357.GA14712@linux-os.sc.intel.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 604 Lines: 17 Siddha, Suresh B wrote: > This is wrt to x86 git commit f56d005d30342a45d8af2b75ecccc82200f09600 > "x86: no CPA on iounmap" > > This can use performance issue. When a GART driver unmaps a RAM page, thinking about this some more... afaik the gart driver doesn't use ioremap.... (and it does caching control explicitly, and sets its pages back to cached) -- 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/