From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 76E8FC48BCD for ; Wed, 9 Jun 2021 12:24:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5285961287 for ; Wed, 9 Jun 2021 12:24:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232443AbhFIM0D (ORCPT ); Wed, 9 Jun 2021 08:26:03 -0400 Received: from 8bytes.org ([81.169.241.247]:43274 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232278AbhFIM0A (ORCPT ); Wed, 9 Jun 2021 08:26:00 -0400 Received: by theia.8bytes.org (Postfix, from userid 1000) id B438636A; Wed, 9 Jun 2021 14:24:04 +0200 (CEST) Date: Wed, 9 Jun 2021 14:24:03 +0200 From: Joerg Roedel To: "Tian, Kevin" Cc: Jason Gunthorpe , "Alex Williamson (alex.williamson@redhat.com)" , Jean-Philippe Brucker , David Gibson , Jason Wang , "parav@mellanox.com" , "Enrico Weigelt, metux IT consult" , Paolo Bonzini , Shenming Lu , Eric Auger , Jonathan Corbet , "Raj, Ashok" , "Liu, Yi L" , "Wu, Hao" , "Jiang, Dave" , Jacob Pan , Kirti Wankhede , Robin Murphy , "kvm@vger.kernel.org" , "iommu@lists.linux-foundation.org" , David Woodhouse , LKML , Lu Baolu Subject: Re: Plan for /dev/ioasid RFC v2 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 07, 2021 at 02:58:18AM +0000, Tian, Kevin wrote: > - Device-centric (Jason) vs. group-centric (David) uAPI. David is not fully > convinced yet. Based on discussion v2 will continue to have ioasid uAPI > being device-centric (but it's fine for vfio to be group-centric). A new > section will be added to elaborate this part; I would vote for group-centric here. Or do the reasons for which VFIO is group-centric not apply to IOASID? If so, why? Regards, Joerg From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_RED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 12A48C48BCD for ; Wed, 9 Jun 2021 12:24:13 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8B70F61364 for ; Wed, 9 Jun 2021 12:24:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B70F61364 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 5674540523; Wed, 9 Jun 2021 12:24:12 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XAWZ7pfwnfbE; Wed, 9 Jun 2021 12:24:11 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id DFF6840522; Wed, 9 Jun 2021 12:24:10 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id B4EBAC000D; Wed, 9 Jun 2021 12:24:10 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [IPv6:2605:bc80:3010::133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 80EEAC000B for ; Wed, 9 Jun 2021 12:24:09 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 617C8403CE for ; Wed, 9 Jun 2021 12:24:09 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9G6dKUrqISuG for ; Wed, 9 Jun 2021 12:24:08 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.8.0 Received: from theia.8bytes.org (8bytes.org [81.169.241.247]) by smtp2.osuosl.org (Postfix) with ESMTPS id 1622440104 for ; Wed, 9 Jun 2021 12:24:07 +0000 (UTC) Received: by theia.8bytes.org (Postfix, from userid 1000) id B438636A; Wed, 9 Jun 2021 14:24:04 +0200 (CEST) Date: Wed, 9 Jun 2021 14:24:03 +0200 From: Joerg Roedel To: "Tian, Kevin" Subject: Re: Plan for /dev/ioasid RFC v2 Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Cc: "kvm@vger.kernel.org" , Jason Wang , Kirti Wankhede , Jean-Philippe Brucker , "Jiang, Dave" , "Raj, Ashok" , Jonathan Corbet , Jason Gunthorpe , "parav@mellanox.com" , "Alex Williamson \(alex.williamson@redhat.com\)" , "Enrico Weigelt, metux IT consult" , David Gibson , Robin Murphy , LKML , Shenming Lu , "iommu@lists.linux-foundation.org" , Paolo Bonzini , David Woodhouse X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Mon, Jun 07, 2021 at 02:58:18AM +0000, Tian, Kevin wrote: > - Device-centric (Jason) vs. group-centric (David) uAPI. David is not fully > convinced yet. Based on discussion v2 will continue to have ioasid uAPI > being device-centric (but it's fine for vfio to be group-centric). A new > section will be added to elaborate this part; I would vote for group-centric here. Or do the reasons for which VFIO is group-centric not apply to IOASID? If so, why? Regards, Joerg _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu