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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNWANTED_LANGUAGE_BODY,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 B279EC2D0D2 for ; Tue, 24 Dec 2019 07:46:29 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 91AD020706 for ; Tue, 24 Dec 2019 07:46:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 91AD020706 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 silver.osuosl.org (Postfix) with ESMTP id 7E9D72052B; Tue, 24 Dec 2019 07:46:29 +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 5FO0VPiZuaZF; Tue, 24 Dec 2019 07:46:28 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 79517203EB; Tue, 24 Dec 2019 07:46:28 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 67820C1D81; Tue, 24 Dec 2019 07:46:28 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 4557BC0881 for ; Tue, 24 Dec 2019 07:46:27 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 3524B85321 for ; Tue, 24 Dec 2019 07:46:27 +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 0_20Fl6pSoGh for ; Tue, 24 Dec 2019 07:46:26 +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 BECB78574F for ; Tue, 24 Dec 2019 07:46:26 +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 23:46:26 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,350,1571727600"; d="scan'208";a="223177094" Received: from allen-box.sh.intel.com ([10.239.159.136]) by fmsmga001.fm.intel.com with ESMTP; 23 Dec 2019 23:46:24 -0800 From: Lu Baolu To: Joerg Roedel , David Woodhouse , Alex Williamson Subject: [PATCH v5 7/9] iommu/vt-d: Update first level super page capability Date: Tue, 24 Dec 2019 15:45:00 +0800 Message-Id: <20191224074502.5545-8-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" First-level translation may map input addresses to 4-KByte pages, 2-MByte pages, or 1-GByte pages. Support for 4-KByte pages and 2-Mbyte pages are mandatory for first-level translation. Hardware support for 1-GByte page is reported through the FL1GP field in the Capability Register. Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 1ebf5ed460cf..34e619318f64 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -685,11 +685,12 @@ static int domain_update_iommu_snooping(struct intel_iommu *skip) return ret; } -static int domain_update_iommu_superpage(struct intel_iommu *skip) +static int domain_update_iommu_superpage(struct dmar_domain *domain, + struct intel_iommu *skip) { struct dmar_drhd_unit *drhd; struct intel_iommu *iommu; - int mask = 0xf; + int mask = 0x3; if (!intel_iommu_superpage) { return 0; @@ -699,7 +700,13 @@ static int domain_update_iommu_superpage(struct intel_iommu *skip) rcu_read_lock(); for_each_active_iommu(iommu, drhd) { if (iommu != skip) { - mask &= cap_super_page_val(iommu->cap); + if (domain && domain_use_first_level(domain)) { + if (!cap_fl1gp_support(iommu->cap)) + mask = 0x1; + } else { + mask &= cap_super_page_val(iommu->cap); + } + if (!mask) break; } @@ -714,7 +721,7 @@ static void domain_update_iommu_cap(struct dmar_domain *domain) { domain_update_iommu_coherency(domain); domain->iommu_snooping = domain_update_iommu_snooping(NULL); - domain->iommu_superpage = domain_update_iommu_superpage(NULL); + domain->iommu_superpage = domain_update_iommu_superpage(domain, NULL); } struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus, @@ -4604,7 +4611,7 @@ static int intel_iommu_add(struct dmar_drhd_unit *dmaru) iommu->name); return -ENXIO; } - sp = domain_update_iommu_superpage(iommu) - 1; + sp = domain_update_iommu_superpage(NULL, iommu) - 1; if (sp >= 0 && !(cap_super_page_val(iommu->cap) & (1 << sp))) { pr_warn("%s: Doesn't support large page.\n", iommu->name); -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu