From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 13 Feb 2009 23:56:10 +0000 (GMT) Received: from h5.dl5rb.org.uk ([81.2.74.5]:62929 "EHLO h5.dl5rb.org.uk") by ftp.linux-mips.org with ESMTP id S21367134AbZBMX4I (ORCPT ); Fri, 13 Feb 2009 23:56:08 +0000 Received: from h5.dl5rb.org.uk (localhost.localdomain [127.0.0.1]) by h5.dl5rb.org.uk (8.14.3/8.14.3) with ESMTP id n1DNu479032299; Fri, 13 Feb 2009 23:56:05 GMT Received: (from ralf@localhost) by h5.dl5rb.org.uk (8.14.3/8.14.3/Submit) id n1DNu3cH032297; Fri, 13 Feb 2009 23:56:03 GMT Date: Fri, 13 Feb 2009 23:56:03 +0000 From: Ralf Baechle To: peter fuerst Cc: naresh kamboju , linux-mips@linux-mips.org Subject: Re: cacheflush system call-MIPS Message-ID: <20090213235603.GA32274@linux-mips.org> References: <20090211131649.GA1365@linux-mips.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 21937 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Sat, Feb 14, 2009 at 12:50:46AM +0100, peter fuerst wrote: > there is one more good reason to ... : the Impact Xserver needs to do > a cacheflush(a,w,DCACHE) as part of the refresh-sequence. > And hence requires a sys_cacheflush, let's say, more conforming to the > man-page (or some disgusting new ioctl in the Impact kernel-driver to > do an equivalent operation ;-) Why does it need that flush? Ralf