From nobody Thu Dec 26 00:51:15 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 1508246996246826.0669641907509; Tue, 17 Oct 2017 06:29:56 -0700 (PDT) Received: from [127.0.0.1] (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id A0DA721CF58CA; Tue, 17 Oct 2017 06:26:11 -0700 (PDT) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) (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 814A321CF58CA for ; Tue, 17 Oct 2017 06:26:10 -0700 (PDT) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga105.jf.intel.com with ESMTP; 17 Oct 2017 06:29:46 -0700 Received: from jwang36-mobl2.ccr.corp.intel.com ([10.254.211.53]) by fmsmga002.fm.intel.com with ESMTP; 17 Oct 2017 06:29:44 -0700 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=134.134.136.100; helo=mga07.intel.com; envelope-from=jian.j.wang@intel.com; receiver=edk2-devel@lists.01.org X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.43,391,1503385200"; d="scan'208";a="1231731322" From: Jian J Wang To: edk2-devel@lists.01.org Date: Tue, 17 Oct 2017 21:29:24 +0800 Message-Id: <20171017132924.19732-7-jian.j.wang@intel.com> X-Mailer: git-send-email 2.14.1.windows.1 In-Reply-To: <20171017132924.19732-1-jian.j.wang@intel.com> References: <20171017132924.19732-1-jian.j.wang@intel.com> Subject: [edk2] [PATCH v2 6/6] MdeModulePkg/DxeIpl: Enable paging for heap guard X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jiewen Yao , Eric Dong , 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" Heap guard feature needs paging to work properly. 64-bit BIOS uses PcdDxeIplBuildPageTables to control the page table setup. 32-bit BIOS has to check heap guard feature to decide enabling paging or not. Cc: Star Zeng Cc: Eric Dong Cc: Jiewen Yao Suggested-by: Ayellet Wolman Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jian J Wang --- MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | 1 + MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c | 29 +++++++++++++++++++++= +++- 2 files changed, 29 insertions(+), 1 deletion(-) diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf b/MdeModulePkg/Core/Dx= eIplPeim/DxeIpl.inf index c54afe4aa6..1c48f80a76 100644 --- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf +++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf @@ -115,6 +115,7 @@ [Pcd.IA32,Pcd.X64] gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable ##= SOMETIMES_CONSUMES gEfiMdeModulePkgTokenSpaceGuid.PcdPteMemoryEncryptionAddressOrMask ##= CONSUMES + gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPropertyMask ##= CONSUMES =20 [Pcd.IA32,Pcd.X64,Pcd.ARM,Pcd.AARCH64] gEfiMdeModulePkgTokenSpaceGuid.PcdSetNxForStack ## SOMETIM= ES_CONSUMES diff --git a/MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c b/MdeModulePkg= /Core/DxeIplPeim/Ia32/DxeLoadFunc.c index 1957326caf..306d7ec804 100644 --- a/MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c +++ b/MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c @@ -209,6 +209,33 @@ IsExecuteDisableBitAvailable ( return Available; } =20 +/** + The function will check if page table should be setup or not. + + @retval TRUE Page table should be created. + @retval FALSE Page table should not be created. + +**/ +BOOLEAN +ToBuildPageTable ( + VOID + ) +{ + if (!IsIa32PaeSupport ()) { + return FALSE; + } + + if (PcdGet8 (PcdHeapGuardPropertyMask) !=3D 0) { + return TRUE; + } + + if (PcdGetBool (PcdSetNxForStack) && IsExecuteDisableBitAvailable ()) { + return TRUE; + } + + return FALSE; +} + /** Transfers control to DxeCore. =20 @@ -379,7 +406,7 @@ HandOffToDxeCore ( TopOfStack =3D (EFI_PHYSICAL_ADDRESS) (UINTN) ALIGN_POINTER (TopOfStac= k, CPU_STACK_ALIGNMENT); =20 PageTables =3D 0; - BuildPageTablesIa32Pae =3D (BOOLEAN) (PcdGetBool (PcdSetNxForStack) &&= IsIa32PaeSupport () && IsExecuteDisableBitAvailable ()); + BuildPageTablesIa32Pae =3D ToBuildPageTable (); if (BuildPageTablesIa32Pae) { PageTables =3D Create4GPageTablesIa32Pae (BaseOfStack, STACK_SIZE); EnableExecuteDisableBit (); --=20 2.14.1.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel