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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 DB0A0C2D0D2 for ; Tue, 24 Dec 2019 07:46:32 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 BABC220706 for ; Tue, 24 Dec 2019 07:46:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BABC220706 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 hemlock.osuosl.org (Postfix) with ESMTP id 81F5587807; Tue, 24 Dec 2019 07:46:32 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VvAgan6toxNL; Tue, 24 Dec 2019 07:46:30 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 95E03877B5; Tue, 24 Dec 2019 07:46:30 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 83F98C1D81; Tue, 24 Dec 2019 07:46:30 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 88D29C0881 for ; Tue, 24 Dec 2019 07:46:29 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 78888856E9 for ; Tue, 24 Dec 2019 07:46:29 +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 RWztbRGywtC7 for ; Tue, 24 Dec 2019 07:46:29 +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 0B95B85321 for ; Tue, 24 Dec 2019 07:46:29 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Dec 2019 23:46:28 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,350,1571727600"; d="scan'208";a="223177100" Received: from allen-box.sh.intel.com ([10.239.159.136]) by fmsmga001.fm.intel.com with ESMTP; 23 Dec 2019 23:46:26 -0800 From: Lu Baolu To: Joerg Roedel , David Woodhouse , Alex Williamson Subject: [PATCH v5 8/9] iommu/vt-d: Use iova over first level Date: Tue, 24 Dec 2019 15:45:01 +0800 Message-Id: <20191224074502.5545-9-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191224074502.5545-1-baolu.lu@linux.intel.com> References: <20191224074502.5545-1-baolu.lu@linux.intel.com> Cc: kevin.tian@intel.com, ashok.raj@intel.com, kvm@vger.kernel.org, sanjay.k.kumar@intel.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, yi.y.sun@intel.com 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: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" After we make all map/unmap paths support first level page table. Let's turn it on if hardware supports scalable mode. Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 34e619318f64..51d60bad0b1d 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1770,15 +1770,13 @@ static void free_dmar_iommu(struct intel_iommu *iommu) /* * Check and return whether first level is used by default for - * DMA translation. Currently, we make it off by setting - * first_level_support = 0, and will change it to -1 after all - * map/unmap paths support first level page table. + * DMA translation. */ static bool first_level_by_default(void) { struct dmar_drhd_unit *drhd; struct intel_iommu *iommu; - static int first_level_support = 0; + static int first_level_support = -1; if (likely(first_level_support != -1)) return first_level_support; -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu