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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 08DBFECDFB3 for ; Mon, 16 Jul 2018 05:28:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B4A34208E3 for ; Mon, 16 Jul 2018 05:28:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B4A34208E3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727464AbeGPFyC (ORCPT ); Mon, 16 Jul 2018 01:54:02 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:40946 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726343AbeGPFyC (ORCPT ); Mon, 16 Jul 2018 01:54:02 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A96244023337; Mon, 16 Jul 2018 05:28:25 +0000 (UTC) Received: from xz-mi (ovpn-12-94.pek2.redhat.com [10.72.12.94]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6F54C76CE; Mon, 16 Jul 2018 05:28:20 +0000 (UTC) Date: Mon, 16 Jul 2018 13:28:15 +0800 From: Peter Xu To: Lu Baolu Cc: Joerg Roedel , David Woodhouse , ashok.raj@intel.com, sanjay.k.kumar@intel.com, jacob.jun.pan@intel.com, kevin.tian@intel.com, yi.l.liu@intel.com, yi.y.sun@intel.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Jacob Pan Subject: Re: [PATCH v5 1/9] iommu/vt-d: Global PASID name space Message-ID: <20180716052815.GA20520@xz-mi> References: <1531554422-6874-1-git-send-email-baolu.lu@linux.intel.com> <1531554422-6874-2-git-send-email-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1531554422-6874-2-git-send-email-baolu.lu@linux.intel.com> User-Agent: Mutt/1.10.0 (2018-05-17) X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Mon, 16 Jul 2018 05:28:25 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Mon, 16 Jul 2018 05:28:25 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'peterx@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jul 14, 2018 at 03:46:54PM +0800, Lu Baolu wrote: > This adds the system wide PASID name space for the PASID > allocation. Currently we are using per IOMMU PASID name > spaces which are not suitable for some use cases. For an > example, one application (associated with a PASID) might > talk to two physical devices simultaneously while the two > devices could reside behind two different IOMMU units. > > Cc: Ashok Raj > Cc: Jacob Pan > Cc: Kevin Tian > Cc: Liu Yi L > Suggested-by: Ashok Raj > Signed-off-by: Lu Baolu > Reviewed-by: Kevin Tian > Reviewed-by: Liu Yi L Reviewed-by: Peter Xu -- Peter Xu