From patchwork Tue Oct 24 15:14:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13434990 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 431D2C25B6E for ; Tue, 24 Oct 2023 15:34:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234739AbjJXPet (ORCPT ); Tue, 24 Oct 2023 11:34:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234931AbjJXPep (ORCPT ); Tue, 24 Oct 2023 11:34:45 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 57E831FCB; Tue, 24 Oct 2023 08:25:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698161146; x=1729697146; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HxxDxm+pmr+CG9d+qPDASdBIZigfxNwo47Fkj5u+VjE=; b=U8/XyhXSMDHlz9avuLIpfC/0Tfq7DO9/PustChdZxkudDit69FbYnzcx 8Jb72EI9L5+pFW5C9qKiDpQPX3SUY1+E5haTp6MtCfFHBfq+MAKrhdKLH PZdP6gML/U6UjLCEKxWTbXTbEd2LGh6UhJuRl2R6uZ2rr3vMRBmtGdK9S fyf6o9areE3d/tViQZwwURb72Y8Y2ZrN5x8wwBUjis+r4ch7JVYLH25za t5+NoFzJuYNmcWwa1jW5D/r2SqhFBen78QBdA894eqZsEDFHOKcKb5oof SfPBUvsbBLRAVnK27r/KZ1WmdDirQ3XWTXANjbW2VZ5CV6szIAphh5cBm A==; X-IronPort-AV: E=McAfee;i="6600,9927,10873"; a="418212082" X-IronPort-AV: E=Sophos;i="6.03,248,1694761200"; d="scan'208";a="418212082" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Oct 2023 08:14:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10873"; a="1005688893" X-IronPort-AV: E=Sophos;i="6.03,248,1694761200"; d="scan'208";a="1005688893" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga006.fm.intel.com with ESMTP; 24 Oct 2023 08:14:13 -0700 From: Yi Liu To: joro@8bytes.org, alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com, robin.murphy@arm.com, baolu.lu@linux.intel.com Cc: cohuck@redhat.com, eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org, mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com, yi.l.liu@intel.com, yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com, shameerali.kolothum.thodi@huawei.com, lulu@redhat.com, suravee.suthikulpanit@amd.com, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, zhenzhong.duan@intel.com, joao.m.martins@oracle.com Subject: [PATCH v7 1/8] iommufd: Add data structure for Intel VT-d stage-1 domain allocation Date: Tue, 24 Oct 2023 08:14:05 -0700 Message-Id: <20231024151412.50046-2-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231024151412.50046-1-yi.l.liu@intel.com> References: <20231024151412.50046-1-yi.l.liu@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org This adds IOMMU_HWPT_DATA_VTD_S1 for stage-1 hw_pagetable of Intel VT-d and the corressponding data structure for userspace specified parameter for the domain allocation. Reviewed-by: Kevin Tian Signed-off-by: Yi Liu --- include/uapi/linux/iommufd.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h index aa9282ebbc7e..3a66d3888393 100644 --- a/include/uapi/linux/iommufd.h +++ b/include/uapi/linux/iommufd.h @@ -362,12 +362,42 @@ enum iommufd_hwpt_alloc_flags { IOMMU_HWPT_ALLOC_DIRTY_TRACKING = 1 << 1, }; +/** + * enum iommu_hwpt_vtd_s1_flags - Intel VT-d stage-1 page table + * entry attributes + * @IOMMU_VTD_S1_SRE: Supervisor request + * @IOMMU_VTD_S1_EAFE: Extended access enable + * @IOMMU_VTD_S1_WPE: Write protect enable + */ +enum iommu_hwpt_vtd_s1_flags { + IOMMU_VTD_S1_SRE = 1 << 0, + IOMMU_VTD_S1_EAFE = 1 << 1, + IOMMU_VTD_S1_WPE = 1 << 2, +}; + +/** + * struct iommu_hwpt_vtd_s1 - Intel VT-d stage-1 page table + * info (IOMMU_HWPT_DATA_VTD_S1) + * @flags: Combination of enum iommu_hwpt_vtd_s1_flags + * @pgtbl_addr: The base address of the stage-1 page table. + * @addr_width: The address width of the stage-1 page table + * @__reserved: Must be 0 + */ +struct iommu_hwpt_vtd_s1 { + __aligned_u64 flags; + __aligned_u64 pgtbl_addr; + __u32 addr_width; + __u32 __reserved; +}; + /** * enum iommu_hwpt_data_type - IOMMU HWPT Data Type * @IOMMU_HWPT_DATA_NONE: no data + * @IOMMU_HWPT_DATA_VTD_S1: Intel VT-d stage-1 page table */ enum iommu_hwpt_data_type { IOMMU_HWPT_DATA_NONE, + IOMMU_HWPT_DATA_VTD_S1, }; /**