From nobody Mon Dec 23 13:25:05 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=none (zoho.com: 198.145.21.10 is neither permitted nor denied by domain of lists.01.org) smtp.mailfrom=edk2-devel-bounces@lists.01.org Return-Path: Received: from ml01.01.org (ml01.01.org [198.145.21.10]) by mx.zohomail.com with SMTPS id 1516190218057666.9797971284454; Wed, 17 Jan 2018 03:56:58 -0800 (PST) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id B232321F833DD; Wed, 17 Jan 2018 03:51:35 -0800 (PST) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id DEFCF2232BDE6 for ; Wed, 17 Jan 2018 03:51:33 -0800 (PST) Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jan 2018 03:56:53 -0800 Received: from shwdeopenpsi068.ccr.corp.intel.com ([10.239.158.46]) by fmsmga005.fm.intel.com with ESMTP; 17 Jan 2018 03:56:52 -0800 X-Original-To: edk2-devel@lists.01.org Received-SPF: none (zoho.com: 198.145.21.10 is neither permitted nor denied by domain of lists.01.org) client-ip=198.145.21.10; envelope-from=edk2-devel-bounces@lists.01.org; helo=ml01.01.org; Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=134.134.136.65; helo=mga03.intel.com; envelope-from=star.zeng@intel.com; receiver=edk2-devel@lists.01.org X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,372,1511856000"; d="scan'208";a="196262635" From: Star Zeng To: edk2-devel@lists.01.org Date: Wed, 17 Jan 2018 19:56:51 +0800 Message-Id: <1516190211-19048-1-git-send-email-star.zeng@intel.com> X-Mailer: git-send-email 2.7.0.windows.1 Subject: [edk2] [PATCH] IntelSiliconPkg IntelVTdDxe: Fix DMA does not work issue X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jiewen Yao , Star Zeng MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Errors-To: edk2-devel-bounces@lists.01.org Sender: "edk2-devel" X-ZohoMail: RSF_4 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Fix DMA does not work issue when system memory is not greater than 4G. Cc: Jiewen Yao Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng Reviewed-by: Jiewen.yao@intel.com --- IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c b/I= ntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c index cecb5d23efbf..7f64d5e418f6 100644 --- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c +++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c @@ -286,11 +286,14 @@ CreateSecondLevelPagingEntry ( if (SecondLevelPagingEntry =3D=3D NULL) { return NULL; } - SecondLevelPagingEntry =3D CreateSecondLevelPagingEntryTable (VtdIndex, = SecondLevelPagingEntry, SIZE_4GB, mAbove4GMemoryLimit, IoMmuAccess); - if (SecondLevelPagingEntry =3D=3D NULL) { - return NULL; - } =20 + if (mAbove4GMemoryLimit !=3D 0) { + ASSERT (mAbove4GMemoryLimit > BASE_4GB); + SecondLevelPagingEntry =3D CreateSecondLevelPagingEntryTable (VtdIndex= , SecondLevelPagingEntry, SIZE_4GB, mAbove4GMemoryLimit, IoMmuAccess); + if (SecondLevelPagingEntry =3D=3D NULL) { + return NULL; + } + } return SecondLevelPagingEntry; } =20 --=20 2.7.0.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel