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,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 31490C32771 for ; Fri, 10 Jan 2020 01:21:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0EE0D20678 for ; Fri, 10 Jan 2020 01:21:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730558AbgAJBVE (ORCPT ); Thu, 9 Jan 2020 20:21:04 -0500 Received: from mga05.intel.com ([192.55.52.43]:18225 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730504AbgAJBVD (ORCPT ); Thu, 9 Jan 2020 20:21:03 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 09 Jan 2020 17:21:03 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,414,1571727600"; d="scan'208";a="246847587" Received: from allen-box.sh.intel.com (HELO [10.239.159.136]) ([10.239.159.136]) by fmsmga004.fm.intel.com with ESMTP; 09 Jan 2020 17:21:01 -0800 Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , "Tian, Kevin" , Raj Ashok , Yi Liu , Eric Auger Subject: Re: [PATCH v8 08/10] iommu/vt-d: Add custom allocator for IOASID To: Jacob Pan References: <1576524252-79116-1-git-send-email-jacob.jun.pan@linux.intel.com> <1576524252-79116-9-git-send-email-jacob.jun.pan@linux.intel.com> <9c9c818c-ccb1-544d-2041-cf7017c4d898@linux.intel.com> <20200109140629.0e15c3f3@jacob-builder> From: Lu Baolu Message-ID: <239924d4-c0c8-54c4-c6a8-bc458bcaea00@linux.intel.com> Date: Fri, 10 Jan 2020 09:19:44 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20200109140629.0e15c3f3@jacob-builder> 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 1/10/20 6:06 AM, Jacob Pan wrote: >>> +static void register_pasid_allocator(struct intel_iommu *iommu) >>> +{ >>> + if (!intel_iommu_sm) { >> Use sm_supported(iommu) instead. >> > sounds good, seems we could separate the sm code more cleanly in the > future to avoid all these checks. > Agreed. Best regards, baolu