Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262680AbVBBVpG (ORCPT ); Wed, 2 Feb 2005 16:45:06 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262812AbVBBVm5 (ORCPT ); Wed, 2 Feb 2005 16:42:57 -0500 Received: from baythorne.infradead.org ([81.187.226.107]:7635 "EHLO baythorne.infradead.org") by vger.kernel.org with ESMTP id S262591AbVBBVkF (ORCPT ); Wed, 2 Feb 2005 16:40:05 -0500 Subject: Re: A scrub daemon (prezeroing) From: David Woodhouse To: Marcelo Tosatti Cc: Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@osdl.org In-Reply-To: <20050202163110.GB23132@logos.cnet> References: <1106828124.19262.45.camel@hades.cambridge.redhat.com> <20050202153256.GA19615@logos.cnet> <20050202163110.GB23132@logos.cnet> Content-Type: text/plain Date: Wed, 02 Feb 2005 21:39:54 +0000 Message-Id: <1107380394.18239.34.camel@baythorne.infradead.org> Mime-Version: 1.0 X-Mailer: Evolution 2.0.2 (2.0.2-3.dwmw2.1) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by baythorne.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 635 Lines: 18 On Wed, 2005-02-02 at 14:31 -0200, Marcelo Tosatti wrote: > Someone should try implementing the zeroing driver for a fast x86 PCI > device. :) The BT848/BT878 seems like an ideal candidate. That kind of abuse is probably only really worth it on an architecture with cache-coherent DMA though. If you have to flush the cache anyway, you might as well just zero it from the CPU. -- dwmw2 - 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/