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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 0DCEEC0044D for ; Tue, 17 Mar 2020 01:12:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D069420663 for ; Tue, 17 Mar 2020 01:12:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733116AbgCQBMu (ORCPT ); Mon, 16 Mar 2020 21:12:50 -0400 Received: from mga07.intel.com ([134.134.136.100]:35614 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733017AbgCQBMu (ORCPT ); Mon, 16 Mar 2020 21:12:50 -0400 IronPort-SDR: 0eLccunPwof4+zVF20ibZbFYYQ2CjSJ2ZywnWok76MaHhuetEgfKYVFJHVplXAu0AqjNS6bYbA eFNdHD9Z4m1w== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Mar 2020 18:12:49 -0700 IronPort-SDR: +84DntUAMAuwV5f09HlFOUn2P/p32UPXKVpFFk29p2DkFjlDAcIQJe/qIvhWUYyffUH0pMyjpW DjOh7595MAjw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,562,1574150400"; d="scan'208";a="267782250" Received: from allen-box.sh.intel.com ([10.239.159.139]) by fmsmga004.fm.intel.com with ESMTP; 16 Mar 2020 18:12:47 -0700 From: Lu Baolu To: Joerg Roedel Cc: ashok.raj@intel.com, jacob.jun.pan@linux.intel.com, kevin.tian@intel.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Liu Yi L , Lu Baolu Subject: [PATCH 1/1] iommu/vt-d: Fix page request descriptor size Date: Tue, 17 Mar 2020 09:10:18 +0800 Message-Id: <20200317011018.22799-1-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jacob Pan Intel VT-d might support PRS (Page Reqest Support) when it's running in the scalable mode. Each page request descriptor occupies 32 bytes and is 32-bytes aligned. The page request descriptor offset mask should be 32-bytes aligned. Fixes: 5b438f4ba315d ("iommu/vt-d: Support page request in scalable mode") Signed-off-by: Jacob Pan Signed-off-by: Liu Yi L Signed-off-by: Lu Baolu --- drivers/iommu/intel-svm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index 0e506de2d375..6183016f4269 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -491,7 +491,7 @@ struct page_req_dsc { u64 priv_data[2]; }; -#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x10) +#define PRQ_RING_MASK ((0x1000 << PRQ_ORDER) - 0x20) static bool access_error(struct vm_area_struct *vma, struct page_req_dsc *req) { -- 2.17.1