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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 1EF14C4363A for ; Tue, 20 Oct 2020 20:27:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C80DB22247 for ; Tue, 20 Oct 2020 20:27:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438460AbgJTU1Q (ORCPT ); Tue, 20 Oct 2020 16:27:16 -0400 Received: from mga09.intel.com ([134.134.136.24]:4607 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2438446AbgJTU1Q (ORCPT ); Tue, 20 Oct 2020 16:27:16 -0400 IronPort-SDR: eyrHxfc7kbGe0q3CKagZivGPZCoDs5zmB7KYXiGX6FGMDmI6QuBblo6EX5HP1s/gD8k1qHw4cN B6unkG0nIXkQ== X-IronPort-AV: E=McAfee;i="6000,8403,9780"; a="167393319" X-IronPort-AV: E=Sophos;i="5.77,398,1596524400"; d="scan'208";a="167393319" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2020 13:27:14 -0700 IronPort-SDR: RlAQXE97+ZvriQnDGm42vH0j7gGQn/9XUpFWtTdpJXo+QSN51NPbauR/ZNq9CGcJT0B9UISF7s mgNrwzUIQLHQ== X-IronPort-AV: E=Sophos;i="5.77,398,1596524400"; d="scan'208";a="533211399" Received: from otc-nc-03.jf.intel.com (HELO otc-nc-03) ([10.54.39.36]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2020 13:27:14 -0700 Date: Tue, 20 Oct 2020 13:27:13 -0700 From: "Raj, Ashok" To: Jason Gunthorpe Cc: "Liu, Yi L" , "Tian, Kevin" , Jason Wang , "alex.williamson@redhat.com" , "eric.auger@redhat.com" , "baolu.lu@linux.intel.com" , "joro@8bytes.org" , "jacob.jun.pan@linux.intel.com" , "Tian, Jun J" , "Sun, Yi Y" , "jean-philippe@linaro.org" , "peterx@redhat.com" , "Wu, Hao" , "stefanha@gmail.com" , "iommu@lists.linux-foundation.org" , "kvm@vger.kernel.org" , "Michael S. Tsirkin" , "Zhu, Lingshan" , Ashok Raj Subject: Re: (proposal) RE: [PATCH v7 00/16] vfio: expose virtual Shared Virtual Addressing to VMs Message-ID: <20201020202713.GF86371@otc-nc-03> References: <20201019142526.GJ6219@nvidia.com> <20201020140217.GI6219@nvidia.com> <20201020162430.GA85321@otc-nc-03> <20201020170336.GK6219@nvidia.com> <20201020195146.GA86371@otc-nc-03> <20201020195557.GO6219@nvidia.com> <20201020200844.GC86371@otc-nc-03> <20201020201403.GP6219@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201020201403.GP6219@nvidia.com> User-Agent: Mutt/1.5.24 (2015-08-30) Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Tue, Oct 20, 2020 at 05:14:03PM -0300, Jason Gunthorpe wrote: > On Tue, Oct 20, 2020 at 01:08:44PM -0700, Raj, Ashok wrote: > > On Tue, Oct 20, 2020 at 04:55:57PM -0300, Jason Gunthorpe wrote: > > > On Tue, Oct 20, 2020 at 12:51:46PM -0700, Raj, Ashok wrote: > > > > I think we agreed (or agree to disagree and commit) for device types that > > > > we have for SIOV, VFIO based approach works well without having to re-invent > > > > another way to do the same things. Not looking for a shortcut by any means, > > > > but we need to plan around existing hardware though. Looks like vDPA took > > > > some shortcuts then to not abstract iommu uAPI instead :-)? When all > > > > necessary hardware was available.. This would be a solved puzzle. > > > > > > I think it is the opposite, vIOMMU and related has outgrown VFIO as > > > the "home" and needs to stand alone. > > > > > > Apparently the HW that will need PASID for vDPA is Intel HW, so if > > > > So just to make this clear, I did check internally if there are any plans > > for vDPA + SVM. There are none at the moment. > > Not SVM, SIOV. ... And that included.. I should have said vDPA + PASID, No current plans. I have no idea who set expectations with you. Can you please put me in touch with that person, privately is fine.