From owner-freebsd-hackers Fri Nov 1 15:33:50 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id PAA02533 for hackers-outgoing; Fri, 1 Nov 1996 15:33:50 -0800 (PST) Received: from mail11.digital.com (mail11.digital.com [192.208.46.10]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id PAA02401 for ; Fri, 1 Nov 1996 15:33:29 -0800 (PST) Received: from muggsy.lkg.dec.com by mail11.digital.com (8.7.5/UNX 1.5/1.0/WV) id SAA32011; Fri, 1 Nov 1996 18:24:53 -0500 (EST) Received: from whydos.lkg.dec.com by muggsy.lkg.dec.com (5.65/DEC-Ultrix/4.3) with SMTP id AA27571; Fri, 1 Nov 1996 18:24:57 -0500 Received: from localhost.lkg.dec.com (localhost.lkg.dec.com [127.0.0.1]) by whydos.lkg.dec.com (8.6.12/8.6.12) with SMTP id TAA15517; Fri, 1 Nov 1996 19:31:32 GMT Message-Id: <199611011931.TAA15517@whydos.lkg.dec.com> X-Authentication-Warning: whydos.lkg.dec.com: Host localhost.lkg.dec.com didn't use HELO protocol X-Mailer: exmh version 1.6.5 12/11/95 To: Terry Lambert Cc: freebsd-hackers@freefall.freebsd.org Subject: Re: VM answer requested In-Reply-To: Your message of "Fri, 01 Nov 1996 14:35:35 MST." <199611012135.OAA28514@phaeton.artisoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 01 Nov 1996 19:31:31 +0000 From: Matt Thomas Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > > What about the aligned access bit in recent Intel processors? > > > I'd also like to get kernel faults if this happens in the kernel > > > (it is my opinion that it should never be allowed to happen in the > > > kernel, and there should be a sanitization pass to insure it). > > > > Don't use the de driver then. Because of a misfeature in the 21x4x > > chips, the Ethernet payload (the stuff after the header) is not longword > > aligned). Having the processor deal with unaligned data is much faster > > than copying the data so that it is aligned. > > How will this driver work with an Alpha or MIPs processor, BTW? It's > a DEC card, you'd expect it to work with both... #if defined(__alpha__) #define TULIP_COPY_RXDATA 1 #endif -- Matt Thomas Internet: matt@3am-software.com 3am Software Foundry WWW URL: http://www.3am-software.com/bio/matt.html Westford, MA Disclaimer: I disavow all knowledge of this message