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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 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 EA5FCC433E1 for ; Tue, 7 Jul 2020 15:31:36 +0000 (UTC) Received: from fraxinus.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 BAE7D204EC for ; Tue, 7 Jul 2020 15:31:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BAE7D204EC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 80E6C88209; Tue, 7 Jul 2020 15:31:36 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OEY3qiE3hQOE; Tue, 7 Jul 2020 15:31:33 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id C75F7881EB; Tue, 7 Jul 2020 15:31:33 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id AD42DC07FF; Tue, 7 Jul 2020 15:31:33 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id E78E5C016F for ; Tue, 7 Jul 2020 15:31:32 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id CD724881F3 for ; Tue, 7 Jul 2020 15:31:32 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NUsh2b6NxD67 for ; Tue, 7 Jul 2020 15:31:32 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by fraxinus.osuosl.org (Postfix) with ESMTPS id AA5FD881EB for ; Tue, 7 Jul 2020 15:31:31 +0000 (UTC) IronPort-SDR: zfcClSfEeOcTsbkHYGhf7r73X8BmipHu/zJXVlW7AjkoACm1DCRf1HG2EqtcPEmHwcALSIpKXe DTl2x35kTqGw== X-IronPort-AV: E=McAfee;i="6000,8403,9675"; a="127212953" X-IronPort-AV: E=Sophos;i="5.75,324,1589266800"; d="scan'208";a="127212953" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jul 2020 08:31:31 -0700 IronPort-SDR: eJJD6EfiVgzIOKmfSus1Tjy2l9fOS9NZutL4XyGgYBVX+/QYiTNGgoyLND0jlGDP+pvHoAcM+v CkS6K4Y7gxCQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,324,1589266800"; d="scan'208";a="283484062" Received: from jacob-builder.jf.intel.com (HELO jacob-builder) ([10.7.199.155]) by orsmga006.jf.intel.com with ESMTP; 07 Jul 2020 08:31:30 -0700 Date: Tue, 7 Jul 2020 08:38:08 -0700 From: Jacob Pan To: Jean-Philippe Brucker Subject: Re: IOASID set token Message-ID: <20200707083808.27adc859@jacob-builder> In-Reply-To: <20200707100718.GA151594@myrica> References: <20200701232916.38fd7908@jacob-builder> <20200702064825.20f9d2b1@jacob-builder> <20200706103041.GA3214@myrica> <20200706135137.26979271@jacob-builder> <20200707100718.GA151594@myrica> Organization: OTC X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Cc: "Tian, Kevin" , "Raj, Ashok" , Jean-Philippe Brucker , "Lu, Baolu" , "iommu@lists.linux-foundation.org" , "Wu, Hao" 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" Hi Jean, All other points agreed. On Tue, 7 Jul 2020 12:07:18 +0200 Jean-Philippe Brucker wrote: > > > For the moment, though, we could actually specialize the IOASID > > > API to only take an mm_struct as token. > > That would be fine with VT-d. We can use init_mm for host PASID set, > > process mm for VM set. > > I'm not fond of using init_mm for the host PASID set. Does it need a > token at all? No need to use init_mm at all, probably can do without a token as well. Just need to allocate a set for the native usage. I will give it a try. Thanks, Jacob _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu