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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,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 42CD0C433B4 for ; Wed, 19 May 2021 09:44:19 +0000 (UTC) Received: from smtp3.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 D43E760FE8 for ; Wed, 19 May 2021 09:44:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D43E760FE8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.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 smtp3.osuosl.org (Postfix) with ESMTP id 8B36D6067E; Wed, 19 May 2021 09:44:18 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Wy4YvauQV1DF; Wed, 19 May 2021 09:44:17 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp3.osuosl.org (Postfix) with ESMTP id 6EC0B606DE; Wed, 19 May 2021 09:44:17 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2A462C000E; Wed, 19 May 2021 09:44:17 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id E4AC8C0001 for ; Wed, 19 May 2021 09:44:14 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id D394E606DE for ; Wed, 19 May 2021 09:44:14 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ndUYUHWslJB5 for ; Wed, 19 May 2021 09:44:14 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) by smtp3.osuosl.org (Postfix) with ESMTPS id DAA006061C for ; Wed, 19 May 2021 09:44:13 +0000 (UTC) Received: from dggems702-chm.china.huawei.com (unknown [172.30.72.58]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4FlSXm3SfrzQpfn; Wed, 19 May 2021 17:40:40 +0800 (CST) Received: from dggema765-chm.china.huawei.com (10.1.198.207) by dggems702-chm.china.huawei.com (10.3.19.179) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Wed, 19 May 2021 17:44:10 +0800 Received: from DESKTOP-6NKE0BC.china.huawei.com (10.174.185.210) by dggema765-chm.china.huawei.com (10.1.198.207) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Wed, 19 May 2021 17:44:10 +0800 From: Kunkun Jiang To: Will Deacon , Robin Murphy , "Eric Auger" , "moderated list:ARM SMMU DRIVERS" , "open list:IOMMU DRIVERS" , open list Subject: [RFC PATCH v1 0/2] iommu/arm-smmu-v3: Add some parameter check in __arm_smmu_tlb_inv_range() Date: Wed, 19 May 2021 17:43:05 +0800 Message-ID: <20210519094307.3275-1-jiangkunkun@huawei.com> X-Mailer: git-send-email 2.26.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.185.210] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggema765-chm.china.huawei.com (10.1.198.207) X-CFilter-Loop: Reflected Cc: wanghaibin.wang@huawei.com, Kunkun Jiang 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Hi all, This set of patches solves some errors when I tested the SMMU nested mode. Test scenario description: guest kernel: 4KB translation granule host kernel: 16KB translation granule errors: 1. encountered an endless loop in __arm_smmu_tlb_inv_range because num_pages is 0 2. encountered CERROR_ILL because the fields of TLB invalidation command are as follow: TG = 2, NUM = 0, SCALE = 0, TTL = 0. The combination is exactly the kind of reserved combination pointed out in the SMMUv3 spec(page 143-144, version D.a) In my opinion, it is more appropriate to add parameter check in __arm_smmu_tlb_inv_range(), although these problems only appeared when I tested the SMMU nested mode. What do you think? This series include patches as below: Patch 1: - align the invalid range with leaf page size upwards when smmu supports RIL Patch 2: - add a check to standardize granule size when smmu supports RIL Kunkun Jiang (2): iommu/arm-smmu-v3: Align invalid range with leaf page size upwards when support RIL iommu/arm-smmu-v3: Standardize granule size when support RIL drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 9 +++++++++ 1 file changed, 9 insertions(+) -- 2.23.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu