From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757416Ab1LHBdf (ORCPT ); Wed, 7 Dec 2011 20:33:35 -0500 Received: from gate.crashing.org ([63.228.1.57]:35472 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756717Ab1LHBde (ORCPT ); Wed, 7 Dec 2011 20:33:34 -0500 Message-ID: <1323307969.12793.17.camel@pasglop> Subject: Re: RFC: Device isolation infrastructure From: Benjamin Herrenschmidt To: Chris Wright Cc: Alex Williamson , David Gibson , joerg.roedel@amd.com, dwmw2@infradead.org, iommu@lists.linux-foundation.org, aik@au1.ibm.com, linux-kernel@vger.kernel.org, agraf@suse.de, scottwood@freescale.com, B08248@freescale.com Date: Thu, 08 Dec 2011 12:32:49 +1100 In-Reply-To: <20111208001645.GJ2395@x200.localdomain> References: <20111207035816.GC7631@truffala.fritz.box> <1323240402.2182.241.camel@bling.home> <20111207142201.GA5696@truffala.fritz.box> <1323287120.15059.63.camel@bling.home> <1323301293.12793.16.camel@pasglop> <20111208001645.GJ2395@x200.localdomain> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.1- Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2011-12-07 at 16:16 -0800, Chris Wright wrote: > Since users will want to drive devices, not groups, how would you > enumerate and expose devices here if the user visible construct > exposed is groups? We do expose the individual devices in the group, which can then be used for things like mmap'ing of BARs etc... However, at least, the ownership transition is done on a whole group basis Cheers, Ben.