Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161044AbXALLUE (ORCPT ); Fri, 12 Jan 2007 06:20:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161080AbXALLUE (ORCPT ); Fri, 12 Jan 2007 06:20:04 -0500 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:2977 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1161044AbXALLUB (ORCPT ); Fri, 12 Jan 2007 06:20:01 -0500 Date: Fri, 12 Jan 2007 11:19:27 +0000 From: Pavel Machek To: Jeff Garzik Cc: Arnd Bergmann , kvm-devel@lists.sourceforge.net, Avi Kivity , Andrew Morton , linux-kernel Subject: Re: [kvm-devel] [RFC] Stable kvm userspace interface Message-ID: <20070112111927.GB7145@ucw.cz> References: <45A39A97.5060807@qumranet.com> <45A39D0D.7090007@garzik.org> <200701110834.43800.arnd@arndb.de> <45A5F4A5.9000408@garzik.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <45A5F4A5.9000408@garzik.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 796 Lines: 25 Hi! > >>Can we please avoid adding a ton of new ioctls? > >>ioctls inevitably require 64-bit compat code for > >>certain architectures, whereas sysfs/procfs does not. > > > >For performance reasons, an ascii string based > >interface is not > >desireable here, some of these calls should be > >optimized to > >the point of counting cycles. > > sysfs does not require ASCII... Yep, but at that point you have 32 vs. 64bit nightmare back... and stronger, because sysfs does not have compat handling. -- Thanks for all the (sleeping) penguins. - 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/