Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755092AbZIAQQv (ORCPT ); Tue, 1 Sep 2009 12:16:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754068AbZIAQQu (ORCPT ); Tue, 1 Sep 2009 12:16:50 -0400 Received: from palinux.external.hp.com ([192.25.206.14]:41185 "EHLO mail.parisc-linux.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754020AbZIAQQu (ORCPT ); Tue, 1 Sep 2009 12:16:50 -0400 Date: Tue, 1 Sep 2009 10:16:51 -0600 From: Matthew Wilcox To: Roland Dreier Cc: Bart Van Assche , James Bottomley , akataria@vmware.com, Robert Love , Randy Dunlap , Mike Christie , linux-scsi@vger.kernel.org, LKML , Andrew Morton , Dmitry Torokhov , Rolf Eike Beer , Maxime Austruy Subject: Re: [PATCH] SCSI driver for VMware's virtual HBA. Message-ID: <20090901161651.GO22870@parisc-linux.org> References: <1251415060.16297.58.camel@ank32.eng.vmware.com> <1251739735.16169.20.camel@ank32.eng.vmware.com> <1251741624.18828.83.camel@mulgrave.site> 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) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1119 Lines: 22 On Tue, Sep 01, 2009 at 09:12:43AM -0700, Roland Dreier wrote: > I'm not really sure we should be trying to force drivers to share just > because they are paravirtualized -- if there is real commonality, then > sure put it in common code, but different hypervisors are probably as > different as different hardware. I really disagree. This kind of virtualised drivers are pretty much communication protocols, and not hardware. As such, why design a new one? If there's an infelicity in the ibmvscsi protocol, it makes sense to design a new one. But being different for the sake of being different is just a way to generate a huge amount of make-work. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- 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/