Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030272AbWBTPDc (ORCPT ); Mon, 20 Feb 2006 10:03:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030273AbWBTPDc (ORCPT ); Mon, 20 Feb 2006 10:03:32 -0500 Received: from ozlabs.org ([203.10.76.45]:65506 "EHLO ozlabs.org") by vger.kernel.org with ESMTP id S1030272AbWBTPDc (ORCPT ); Mon, 20 Feb 2006 10:03:32 -0500 Date: Tue, 21 Feb 2006 01:59:05 +1100 From: Anton Blanchard To: Roland Dreier Cc: linux-kernel@vger.kernel.org, linuxppc64-dev@ozlabs.org, openib-general@openib.org, SCHICKHJ@de.ibm.com, RAISCH@de.ibm.com, HNGUYEN@de.ibm.com, MEDER@de.ibm.com Subject: Re: [PATCH 01/22] Add powerpc-specific clear_cacheline(), which just compiles to "dcbz". Message-ID: <20060220145904.GA19895@krispykreme> References: <20060218005532.13620.79663.stgit@localhost.localdomain> <20060218005704.13620.88286.stgit@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060218005704.13620.88286.stgit@localhost.localdomain> User-Agent: Mutt/1.5.11+cvs20060126 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 513 Lines: 16 Hi, > This is horribly non-portable. How much of a performance difference > does it make? How does it do on ppc64 systems where the cacheline > size is not 32? Yes, if anything we should catch cacheline aligned, multiple cacheline sized zeroing in memset. Anton - 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/