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[23.128.96.35]) by mx.google.com with ESMTPS id w8-20020a63f508000000b0059c36d79520si1509738pgh.772.2023.10.20.02.37.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Oct 2023 02:37:40 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) client-ip=23.128.96.35; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b=e48LIvvG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.35 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by groat.vger.email (Postfix) with ESMTP id EFA568098FC9; Fri, 20 Oct 2023 02:37:36 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at groat.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376752AbjJTJhZ (ORCPT + 25 others); Fri, 20 Oct 2023 05:37:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376682AbjJTJhX (ORCPT ); Fri, 20 Oct 2023 05:37:23 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04784D5A; Fri, 20 Oct 2023 02:37:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697794642; x=1729330642; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=JijNHPfw4k1QRUj+k7XDRv8fLZZnJxP1OwX0xLP61vk=; b=e48LIvvGgQ0ED3HbrQBbx7TEImZM8k1jQ5lBwcndhrqOJIPqN0aMpfSG qiBS1Iur5XHHfkpUUtM95GqLeIISw/URgoGHRxUtX/BFjx+hb+UfKBxxI DMc5EeCV2+Ao5a8sToyGOUOQyt2BQlhmTQiaU1IGFViHPcpb0nzeEZaPI lIK49uYRq6DaDPvUsRaHt9uHazK/qsXDYEP6F2wCOapkETFGAGpD5jHln jjYKxXSyuRgxqhOsVMmBTpUbZX2eKpN2RhwmF86IkUdai46kFOflPJdLI vP1tGe7wxjFES6qqiLPBLMaDoFk/QuHXqZsA0fiTjW2f7fv3/QMXADnZc A==; X-IronPort-AV: E=McAfee;i="6600,9927,10868"; a="385341716" X-IronPort-AV: E=Sophos;i="6.03,238,1694761200"; d="scan'208";a="385341716" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2023 02:37:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10868"; a="707181304" X-IronPort-AV: E=Sophos;i="6.03,238,1694761200"; d="scan'208";a="707181304" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga003.jf.intel.com with ESMTP; 20 Oct 2023 02:37:20 -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, xin.zeng@intel.com Subject: [PATCH v6 1/3] iommufd: Add data structure for Intel VT-d stage-1 cache invalidation Date: Fri, 20 Oct 2023 02:37:16 -0700 Message-Id: <20231020093719.18725-2-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231020093719.18725-1-yi.l.liu@intel.com> References: <20231020093719.18725-1-yi.l.liu@intel.com> MIME-Version: 1.0 X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Fri, 20 Oct 2023 02:37:37 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780266734065742588 X-GMAIL-MSGID: 1780266734065742588 This adds the data structure for flushing iotlb for the nested domain allocated with IOMMU_HWPT_DATA_VTD_S1 type. This only supports invalidating IOTLB, but no for device-TLB as device-TLB invalidation will be covered automatically in the IOTLB invalidation if the underlying IOMMU driver has enabled ATS for the affected device. Signed-off-by: Yi Liu --- include/uapi/linux/iommufd.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h index c8f523a7bc06..a910f67e344b 100644 --- a/include/uapi/linux/iommufd.h +++ b/include/uapi/linux/iommufd.h @@ -519,6 +519,42 @@ struct iommu_hw_info { }; #define IOMMU_GET_HW_INFO _IO(IOMMUFD_TYPE, IOMMUFD_CMD_GET_HW_INFO) +/** + * enum iommu_hwpt_vtd_s1_invalidate_flags - Flags for Intel VT-d + * stage-1 cache invalidation + * @IOMMU_VTD_INV_FLAGS_LEAF: The LEAF flag indicates whether only the + * leaf PTE caching needs to be invalidated + * and other paging structure caches can be + * preserved. + */ +enum iommu_hwpt_vtd_s1_invalidate_flags { + IOMMU_VTD_INV_FLAGS_LEAF = 1 << 0, +}; + +/** + * struct iommu_hwpt_vtd_s1_invalidate - Intel VT-d cache invalidation + * (IOMMU_HWPT_DATA_VTD_S1) + * @addr: The start address of the addresses to be invalidated. It needs + * to be 4KB aligned. + * @npages: Number of contiguous 4K pages to be invalidated. + * @flags: Combination of enum iommu_hwpt_vtd_s1_invalidate_flags + * @__reserved: Must be 0 + * + * The Intel VT-d specific invalidation data for user-managed stage-1 cache + * invalidation in nested translation. Userspace uses this structure to + * tell the impacted cache scope after modifying the stage-1 page table. + * + * Invalidating all the caches related to the page table by setting @addr + * to be 0 and @npages to be __aligned_u64(-1). This includes the + * corresponding device-TLB if ATS is enabled on the attached devices. + */ +struct iommu_hwpt_vtd_s1_invalidate { + __aligned_u64 addr; + __aligned_u64 npages; + __u32 flags; + __u32 __reserved; +}; + /** * struct iommu_hwpt_invalidate - ioctl(IOMMU_HWPT_INVALIDATE) * @size: sizeof(struct iommu_hwpt_invalidate)