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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 14389C432C0 for ; Mon, 18 Nov 2019 01:22:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE991206E1 for ; Mon, 18 Nov 2019 01:22:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726317AbfKRBWF (ORCPT ); Sun, 17 Nov 2019 20:22:05 -0500 Received: from mga18.intel.com ([134.134.136.126]:21184 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725905AbfKRBWF (ORCPT ); Sun, 17 Nov 2019 20:22:05 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Nov 2019 17:22:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,318,1569308400"; d="scan'208";a="203922350" Received: from allen-box.sh.intel.com (HELO [10.239.159.136]) ([10.239.159.136]) by fmsmga008.fm.intel.com with ESMTP; 17 Nov 2019 17:22:02 -0800 Cc: baolu.lu@linux.intel.com, "Tian, Kevin" , Raj Ashok , Yi Liu , Eric Auger Subject: Re: [PATCH 01/10] iommu/vt-d: Introduce native SVM capable flag To: Jacob Pan , iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse References: <1573859377-75924-1-git-send-email-jacob.jun.pan@linux.intel.com> <1573859377-75924-2-git-send-email-jacob.jun.pan@linux.intel.com> From: Lu Baolu Message-ID: Date: Mon, 18 Nov 2019 09:19:01 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <1573859377-75924-2-git-send-email-jacob.jun.pan@linux.intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 11/16/19 7:09 AM, Jacob Pan wrote: > Shared Virtual Memory(SVM) is based on a collective set of hardware > features detected at runtime. There are requirements for matching CPU > and IOMMU capabilities. > > This patch introduces a flag which will be used to mark and test the > capability of SVM. > > Signed-off-by: Jacob Pan Acked-by: Lu Baolu Best regards, baolu > --- > include/linux/intel-iommu.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h > index ed11ef594378..63118991824c 100644 > --- a/include/linux/intel-iommu.h > +++ b/include/linux/intel-iommu.h > @@ -433,6 +433,7 @@ enum { > > #define VTD_FLAG_TRANS_PRE_ENABLED (1 << 0) > #define VTD_FLAG_IRQ_REMAP_PRE_ENABLED (1 << 1) > +#define VTD_FLAG_SVM_CAPABLE (1 << 2) > > extern int intel_iommu_sm; > >