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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 9852BC433E0 for ; Thu, 30 Jul 2020 00:14:29 +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 759062075D for ; Thu, 30 Jul 2020 00:14:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 759062075D 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 64FA8883AE; Thu, 30 Jul 2020 00:14:29 +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 9j24QtOMyemn; Thu, 30 Jul 2020 00:14:27 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 282FC88408; Thu, 30 Jul 2020 00:14:27 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1DAE8C0051; Thu, 30 Jul 2020 00:14:27 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8F95AC004F for ; Thu, 30 Jul 2020 00:14:25 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 7C70386C4A for ; Thu, 30 Jul 2020 00:14:25 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SAFFWA3GIsdU for ; Thu, 30 Jul 2020 00:14:22 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by whitealder.osuosl.org (Postfix) with ESMTPS id 36CAE881EC for ; Thu, 30 Jul 2020 00:14:22 +0000 (UTC) IronPort-SDR: B/09OA+pdCfrNaPyCZyY8lr19MdLEbDWoVyJ+cbLSavC8BWA/1FuHsLugkrtUNF2fAu8aB5xeq iXjcwnis5NEw== X-IronPort-AV: E=McAfee;i="6000,8403,9697"; a="139521856" X-IronPort-AV: E=Sophos;i="5.75,412,1589266800"; d="scan'208";a="139521856" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2020 17:14:20 -0700 IronPort-SDR: ELSDTWerbdEmwYsfEhZqtnKxjOm0aXHhl0sMpuKAijHvb+QVR65MSCd6QWckfNt5rLG6x18ZGB 5kG3KczUTgZg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,412,1589266800"; d="scan'208";a="286680250" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga003.jf.intel.com with ESMTP; 29 Jul 2020 17:14:19 -0700 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , Alex Williamson Subject: [PATCH v7 3/7] iommu/uapi: Introduce enum type for PASID data format Date: Wed, 29 Jul 2020 17:21:03 -0700 Message-Id: <1596068467-49322-4-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596068467-49322-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1596068467-49322-1-git-send-email-jacob.jun.pan@linux.intel.com> Cc: "Tian, Kevin" , Raj Ashok , Jonathan Corbet , Jean-Philippe Brucker , Christoph Hellwig , David Woodhouse 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" There can be multiple vendor-specific PASID data formats used in UAPI structures. This patch adds enum type with a last entry which makes range checking much easier. Suggested-by: Alex Williamson Signed-off-by: Jacob Pan --- include/uapi/linux/iommu.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h index d5e9014f690e..abf4455a3495 100644 --- a/include/uapi/linux/iommu.h +++ b/include/uapi/linux/iommu.h @@ -294,11 +294,16 @@ struct iommu_gpasid_bind_data_vtd { IOMMU_SVA_VTD_GPASID_PCD | \ IOMMU_SVA_VTD_GPASID_PWT) +enum iommu_pasid_data_format { + IOMMU_PASID_FORMAT_INTEL_VTD = 1, + IOMMU_PASID_FORMAT_LAST, +}; + /** * struct iommu_gpasid_bind_data - Information about device and guest PASID binding * @argsz: User filled size of this data * @version: Version of this data structure - * @format: PASID table entry format + * @format: PASID table entry format of enum iommu_pasid_data_format type * @flags: Additional information on guest bind request * @gpgd: Guest page directory base of the guest mm to bind * @hpasid: Process address space ID used for the guest mm in host IOMMU @@ -317,7 +322,6 @@ struct iommu_gpasid_bind_data { __u32 argsz; #define IOMMU_GPASID_BIND_VERSION_1 1 __u32 version; -#define IOMMU_PASID_FORMAT_INTEL_VTD 1 __u32 format; __u32 addr_width; #define IOMMU_SVA_GPASID_VAL (1 << 0) /* guest PASID valid */ -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu