Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261676AbVE3TGd (ORCPT ); Mon, 30 May 2005 15:06:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261696AbVE3TGd (ORCPT ); Mon, 30 May 2005 15:06:33 -0400 Received: from twinlark.arctic.org ([207.7.145.18]:25807 "EHLO twinlark.arctic.org") by vger.kernel.org with ESMTP id S261676AbVE3TGc (ORCPT ); Mon, 30 May 2005 15:06:32 -0400 Date: Mon, 30 May 2005 12:06:31 -0700 (PDT) From: dean gaudet To: Benjamin LaHaise cc: ak@muc.de, linux-kernel@vger.kernel.org Subject: Re: [RFC] x86-64: Use SSE for copy_page and clear_page In-Reply-To: <20050530181626.GA10212@kvack.org> Message-ID: References: <20050530181626.GA10212@kvack.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 681 Lines: 16 On Mon, 30 May 2005, Benjamin LaHaise wrote: > Below is a patch that uses 128 bit SSE instructions for copy_page and > clear_page. This is an improvement on P4 systems as can be seen by > running the test program at http://www.kvack.org/~bcrl/xmm64.c to get > results like: it looks like the patch uses SSE2 instructions (pxor, movdqa, movntdq)... if you use xorps, movaps, movntps then it works on SSE processors as well. -dean - 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/