From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: A scrub daemon (prezeroing) From: David Woodhouse 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 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Marcelo Tosatti Cc: Christoph Lameter , linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@osdl.org List-ID: 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org