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_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 EA3CDC4CECC for ; Mon, 27 Apr 2020 20:51:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C8EF82074F for ; Mon, 27 Apr 2020 20:51:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726761AbgD0Uvs (ORCPT ); Mon, 27 Apr 2020 16:51:48 -0400 Received: from mga04.intel.com ([192.55.52.120]:30236 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726384AbgD0Uvr (ORCPT ); Mon, 27 Apr 2020 16:51:47 -0400 IronPort-SDR: 6fgNlV5v213iuEbC0nf+y43R+9SrMHbU97rvrXcwpv8+p1tyLcDGN3lxBBcP+BBCPIpTZ/tu2e HM/7JynLkqCQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2020 13:51:47 -0700 IronPort-SDR: OzjFzowdiAAi7ko+rI7XAZrtRA1KQSqppc5kR0KuQeUaV/9XsuF+JR/9ixe+1kaIKzk5G/F4YW jqykhlmsh48Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,325,1583222400"; d="scan'208";a="275604013" Received: from romley-ivt3.sc.intel.com ([172.25.110.60]) by orsmga002.jf.intel.com with ESMTP; 27 Apr 2020 13:51:46 -0700 Date: Mon, 27 Apr 2020 13:50:51 -0700 From: Fenghua Yu To: Thomas Gleixner Cc: Ingo Molnar , Borislav Petkov , H Peter Anvin , David Woodhouse , Lu Baolu , Dave Hansen , Tony Luck , Ashok Raj , Jacob Jun Pan , Dave Jiang , Sohil Mehta , Ravi V Shankar , linux-kernel , x86 , iommu@lists.linux-foundation.org Subject: Re: [PATCH 4/7] x86/msr-index: Define IA32_PASID MSR Message-ID: <20200427205050.GE242333@romley-ivt3.sc.intel.com> References: <1585596788-193989-1-git-send-email-fenghua.yu@intel.com> <1585596788-193989-5-git-send-email-fenghua.yu@intel.com> <87sggqsd9j.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87sggqsd9j.fsf@nanos.tec.linutronix.de> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Apr 26, 2020 at 01:22:00PM +0200, Thomas Gleixner wrote: > Fenghua Yu writes: > > > The IA32_PASID MSR (0xd93) contains the Process Address Space Identifier > > (PASID), a 20-bit value. Bit 31 must be set to indicate the value > > programmed in the MSR is valid. Hardware uses PASID to identify which > > process submits the work and direct responses to the right process. > > No. It does not identify the process. It identifies the process' address > space as the name says. > > Please provide coherent and precise information. Ok. Will change to address space identification. Thanks. -Fenghua 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_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 727A5C4CECC for ; Mon, 27 Apr 2020 20:51:52 +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 49EC02070B for ; Mon, 27 Apr 2020 20:51:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 49EC02070B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=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 289EC84D56; Mon, 27 Apr 2020 20:51:52 +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 y4W1jxkI7DUQ; Mon, 27 Apr 2020 20:51:51 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id A036C84B55; Mon, 27 Apr 2020 20:51:51 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 771CBC0172; Mon, 27 Apr 2020 20:51:51 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2F38EC003B for ; Mon, 27 Apr 2020 20:51:49 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 1BC1C2221F for ; Mon, 27 Apr 2020 20:51:49 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SWLcxRJF-v4d for ; Mon, 27 Apr 2020 20:51:48 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by silver.osuosl.org (Postfix) with ESMTPS id DC87B20385 for ; Mon, 27 Apr 2020 20:51:47 +0000 (UTC) IronPort-SDR: 1CykEM5xIg/tdkFJJbumfFO9FbI27iMXPTb8znTkBWan+cwF9zWK/AE3EYnBgCBxGIp50+JN1K zC4uCTD/u5oQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Apr 2020 13:51:47 -0700 IronPort-SDR: OzjFzowdiAAi7ko+rI7XAZrtRA1KQSqppc5kR0KuQeUaV/9XsuF+JR/9ixe+1kaIKzk5G/F4YW jqykhlmsh48Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,325,1583222400"; d="scan'208";a="275604013" Received: from romley-ivt3.sc.intel.com ([172.25.110.60]) by orsmga002.jf.intel.com with ESMTP; 27 Apr 2020 13:51:46 -0700 Date: Mon, 27 Apr 2020 13:50:51 -0700 From: Fenghua Yu To: Thomas Gleixner Subject: Re: [PATCH 4/7] x86/msr-index: Define IA32_PASID MSR Message-ID: <20200427205050.GE242333@romley-ivt3.sc.intel.com> References: <1585596788-193989-1-git-send-email-fenghua.yu@intel.com> <1585596788-193989-5-git-send-email-fenghua.yu@intel.com> <87sggqsd9j.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <87sggqsd9j.fsf@nanos.tec.linutronix.de> User-Agent: Mutt/1.5.23 (2014-03-12) Cc: Ravi V Shankar , Tony Luck , Dave Jiang , Ashok Raj , x86 , linux-kernel , Dave Hansen , iommu@lists.linux-foundation.org, Ingo Molnar , Borislav Petkov , Jacob Jun Pan , H Peter Anvin , 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 Sun, Apr 26, 2020 at 01:22:00PM +0200, Thomas Gleixner wrote: > Fenghua Yu writes: > > > The IA32_PASID MSR (0xd93) contains the Process Address Space Identifier > > (PASID), a 20-bit value. Bit 31 must be set to indicate the value > > programmed in the MSR is valid. Hardware uses PASID to identify which > > process submits the work and direct responses to the right process. > > No. It does not identify the process. It identifies the process' address > space as the name says. > > Please provide coherent and precise information. Ok. Will change to address space identification. Thanks. -Fenghua _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu