From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 64E7F82109 for ; Wed, 8 Feb 2017 21:12:12 -0800 (PST) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP; 08 Feb 2017 21:12:12 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,349,1484035200"; d="scan'208";a="931804007" Received: from fmsmsx106.amr.corp.intel.com ([10.18.124.204]) by orsmga003.jf.intel.com with ESMTP; 08 Feb 2017 21:12:11 -0800 Received: from fmsmsx151.amr.corp.intel.com (10.18.125.4) by FMSMSX106.amr.corp.intel.com (10.18.124.204) with Microsoft SMTP Server (TLS) id 14.3.248.2; Wed, 8 Feb 2017 21:12:11 -0800 Received: from shsmsx103.ccr.corp.intel.com (10.239.4.69) by FMSMSX151.amr.corp.intel.com (10.18.125.4) with Microsoft SMTP Server (TLS) id 14.3.248.2; Wed, 8 Feb 2017 21:12:11 -0800 Received: from shsmsx102.ccr.corp.intel.com ([169.254.2.88]) by SHSMSX103.ccr.corp.intel.com ([10.239.4.69]) with mapi id 14.03.0248.002; Thu, 9 Feb 2017 13:12:08 +0800 From: "Zeng, Star" To: Laszlo Ersek , "Yao, Jiewen" , "Duran, Leo" , "edk2-devel@ml01.01.org" CC: "Tian, Feng" , "Singh, Brijesh" , "Justen, Jordan L" , "Zeng, Star" Thread-Topic: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD PcdPteMemoryEncryptionAddressOrMask Thread-Index: AQHSgXv3kYvDfsCSd0elIZPifE0NYaFeYq5AgABtvQCAAAF/gIAAAYyAgAAB+YCAAAK9gIAABs2AgAAIAQCAABhsgIABImZg Date: Thu, 9 Feb 2017 05:12:08 +0000 Message-ID: <0C09AFA07DD0434D9E2A0C6AEB0483103B825154@shsmsx102.ccr.corp.intel.com> References: <1486497223-22694-1-git-send-email-leo.duran@amd.com> <1486497223-22694-2-git-send-email-leo.duran@amd.com> <0C09AFA07DD0434D9E2A0C6AEB0483103B8215CE@shsmsx102.ccr.corp.intel.com> <74D8A39837DF1E4DA445A8C0B3885C503A8EB0DA@shsmsx102.ccr.corp.intel.com> <74D8A39837DF1E4DA445A8C0B3885C503A8EB10D@shsmsx102.ccr.corp.intel.com> <74D8A39837DF1E4DA445A8C0B3885C503A8EB122@shsmsx102.ccr.corp.intel.com> <9b935505-7da8-0b4d-f800-68ae4362476c@redhat.com> <74D8A39837DF1E4DA445A8C0B3885C503A8EB219@shsmsx102.ccr.corp.intel.com> <895f5bcb-acf8-eeb2-889e-04bb1c70fbee@redhat.com> In-Reply-To: <895f5bcb-acf8-eeb2-889e-04bb1c70fbee@redhat.com> Accept-Language: zh-CN, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.239.127.40] MIME-Version: 1.0 Subject: Re: [PATCH] MdeModulePkg: Add dynamic PCD PcdPteMemoryEncryptionAddressOrMask X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 09 Feb 2017 05:12:12 -0000 Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable In fact, X64 DxeIplPeim does not refer PcdDxeIplSwitchToLongMode at all. DxeIpl.inf: [FeaturePcd.IA32] gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode ## CONSUMES As I remember, I did a draft patch below before for the discussion about ho= w to determine DXE is 32BITs or 64BITs in title "[edk2] [PATCH v3 2/4] Inte= lFrameworkModulePkg: BdsDxe: only allocate below 4 GB if needed", I can't f= ind the archive link any more. --- MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c | 5 +++++ MdeModulePkg/MdeModulePkg.dec | 4 +++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c b/MdeModulePkg/= Core/DxeIplPeim/X64/DxeLoadFunc.c index 6488880..348e084 100644 --- a/MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c +++ b/MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c @@ -43,6 +43,11 @@ HandOffToDxeCore ( EFI_PEI_VECTOR_HANDOFF_INFO_PPI *VectorHandoffInfoPpi; =20 // + // It should be FALSE for both PEI and DXE are 64-bit. + // + ASSERT (PcdGetBool (PcdDxeIplSwitchToLongMode) =3D=3D FALSE); + + // // Get Vector Hand-off Info PPI and build Guided HOB // Status =3D PeiServicesLocatePpi ( diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec index af7bcab..4a73f7b 100644 --- a/MdeModulePkg/MdeModulePkg.dec +++ b/MdeModulePkg/MdeModulePkg.dec @@ -712,8 +712,10 @@ ## Indicates if DxeIpl should switch to long mode to enter DXE phase. # It is assumed that 64-bit DxeCore is built in firmware if it is true;= otherwise 32-bit DxeCore # is built in firmware.

+ # And it should be FALSE for both PEI and DXE are 64-bit. # TRUE - DxeIpl will load a 64-bit DxeCore and switch to long mode to= hand over to DxeCore.
- # FALSE - DxeIpl will load a 32-bit DxeCore and perform stack switch t= o hand over to DxeCore.
+ # FALSE - DxeIpl will load a 32-bit DxeCore and perform stack switch t= o hand over to DxeCore,
+ # or both PEI and DXE are 64-bit.
# @Prompt DxeIpl switch to long mode. gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode|TRUE|BOOLEAN|0x= 0001003b =20 -- Thanks, Star -----Original Message----- From: Laszlo Ersek [mailto:lersek@redhat.com]=20 Sent: Thursday, February 9, 2017 3:48 AM To: Yao, Jiewen ; Duran, Leo ; Zen= g, Star ; edk2-devel@ml01.01.org Cc: Tian, Feng ; Singh, Brijesh ; Justen, Jordan L Subject: Re: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD PcdPteMemoryEncry= ptionAddressOrMask On 02/08/17 19:20, Yao, Jiewen wrote: > Got it. >=20 > =20 >=20 > If the means of PcdDxeIplSwitchtoLongMode is unclear, we may add more=20 > description to make it clear. >=20 > =20 >=20 > If we believe "PcdDxeIplSwitchtoLongMode =3D=3D DXE is Long mode" as=20 > final conclusion, can we treat that as a bug and fix OVMF X64? I don't know how to "fix" that. What is there to fix? Flipping the PCD to TRUE in OVMF X64 would break OVMF X64, and likely OVMF = Ia32X64 too. For two reasons: (1) Toggling the PCD would alter the behavior of the DXE IPL PEIM and/or th= e DXE Core, and that behavior has never ever been tested with OVMF X64. The PcdDxeIplSwitchToLongMode=3DFALSE setting in the X64 DSC dates back to: commit 8fa729a8b1401f01c6fd8ddbcab45e4a4904fa9a Author: lgao4 Date: Mon Mar 15 01:40:59 2010 +0000 Merge the same type PCD section. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@= 10243 6f19259b-4bc3-4df7-8a09-765794883524 and before that, to: commit 49ba9447c92d6fca214476381107a180d08e59d1 Author: jljusten Date: Wed May 27 21:10:18 2009 +0000 Add initial version of Open Virtual Machine Firmware (OVMF) platform. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@= 8398 6f19259b-4bc3-4df7-8a09-765794883524 In other words, OVMF X64 has always worked like this, since its inception. (2) PEI code under OvmfPkg itself uses this PCD to identify a 32-bit DXE ph= ase. // // If DXE is 32-bit, then we're done; PciBusDxe will degrade 64-bit MMI= O // resources to 32-bit anyway. See DegradeResource() in // "PciResourceSupport.c". // #ifdef MDE_CPU_IA32 if (!FeaturePcdGet (PcdDxeIplSwitchToLongMode)) { return FirstNonAddress; } #endif and // // If DXE is 32-bit, then just return the traditional 64 MB cap. // #ifdef MDE_CPU_IA32 if (!FeaturePcdGet (PcdDxeIplSwitchToLongMode)) { return SIZE_64MB; } #endif Thanks Laszlo >=20 > =20 >=20 > Thank you >=20 > Yao Jiewen >=20 > =20 >=20 > =20 >=20 > *From:*Laszlo Ersek [mailto:lersek@redhat.com] > *Sent:* Wednesday, February 8, 2017 9:52 AM > *To:* Yao, Jiewen ; Duran, Leo=20 > ; Zeng, Star ;=20 > edk2-devel@ml01.01.org > *Cc:* Tian, Feng ; Singh, Brijesh=20 > ; Justen, Jordan L > *Subject:* Re: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD=20 > PcdPteMemoryEncryptionAddressOrMask >=20 > =20 >=20 > On 02/08/17 18:27, Yao, Jiewen wrote: >> I believe PcdDxeIplSwitchtoLongMode =3D=3D DXE is Long mode. >>=20 >> =20 >>=20 >> See DEC description: >>=20 >> # It is assumed that 64-bit DxeCore is built in firmware if it is=20 >> true; otherwise 32-bit DxeCore >>=20 >> # is built in firmware.

>=20 > Unfortunately, I have no historical context or background for this=20 > PCD; all I can say is that the X64 OVMF platform does not set the PCD. >=20 > It enters long mode, and sets up page tables for the first 4GB of RAM,=20 > in SEC. Then SEC decompresses the flash contents to RAM, which covers=20 > both PEIFV and DXEFV. PEI runs from RAM. >=20 > This is possible because on QEMU/KVM, there's no need to initialize=20 > RAM, thus only SEC runs from flash, in-place. >=20 > Perhaps Jordan can provide more insight. >=20 > If Brijesh and Leo would like to run the X64 OVMF platform as a SEV=20 > guest too, then this should be considered, in my opinion. >=20 > One more comment below: >=20 >>=20 >> =20 >>=20 >> And the code MdeModulePkg\Universal\Acpi\S3SaveStateDxe\AcpiS3ContextSav= e.c: >>=20 >> =20 >>=20 >> BOOLEAN >>=20 >> IsLongModeWakingVectorSupport ( >>=20 >> IN EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE*Facs >>=20 >> ) >>=20 >> { >>=20 >> if((Facs =3D=3D NULL) || >>=20 >> (Facs->Signature !=3D >> EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) ) { >>=20 >> // >>=20 >> // Something wrong with FACS. >>=20 >> // >>=20 >> returnFALSE; >>=20 >> } >>=20 >> if((Facs->Version =3D=3D >> EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION) && >>=20 >> ((Facs->Flags & EFI_ACPI_4_0_64BIT_WAKE_SUPPORTED_F) !=3D 0)) { >>=20 >> // >>=20 >> // BIOS supports 64bit waking vector. >>=20 >> // >>=20 >> if(FeaturePcdGet (PcdDxeIplSwitchToLongMode)) { >>=20 >> returnTRUE; >>=20 >> } >>=20 >> } >>=20 >> returnFALSE; >>=20 >> } >=20 > In practice, it's okay if the OVMF X64 platform is recognized as "not=20 > supporting a 64-bit waking vector for S3 resume". All the 64-bit guest=20 > OSes that I've tested with OVMF X64 (Linux, and the Windows 7 / 8 / 10=20 > families, both client and server) use a real mode (16-bit) waking=20 > vector, in practice. >=20 > ... Actually, upon reviewing the above code more carefully, we don't=20 > even reach the FeaturePcdGet() call: the FACS that QEMU generates (and=20 > OVMF downloads and installs) corresponds to ACPI 1.0, that is,=20 > EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION. >=20 > Thanks > Laszlo >=20 >=20 >>=20 >> =20 >>=20 >> =20 >>=20 >> Thank you >>=20 >> Yao Jiewen >>=20 >> =20 >>=20 >> *From:*edk2-devel [mailto:edk2-devel-bounces@lists.01.org] *On Behalf=20 >> Of *Yao, Jiewen >> *Sent:* Wednesday, February 8, 2017 9:18 AM >> *To:* Laszlo Ersek >; Duran, Leo >; >> Zeng, Star >; edk2-devel@ml01.01.org=20 > >> *Cc:* Tian, Feng >;=20 >> Singh, Brijesh > >> *Subject:* Re: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD=20 >> PcdPteMemoryEncryptionAddressOrMask >>=20 >> =20 >>=20 >> Good reminder. I take back my word. >>=20 >> In this case, we need consume PcdPteMemoryEncryptionAddressOrMask in IA= 32 mode to build X64 paging. >>=20 >> We need >>=20 >> From: Laszlo Ersek [mailto:lersek@redhat.com] >> Sent: Wednesday, February 8, 2017 9:11 AM >> To: Yao, Jiewen > >;=20 > Duran, Leo >=20 > >; Zeng, Star > >;=20 > edk2-devel@ml01.01.org >> >> Cc: Tian, Feng > >; Singh,=20 > Brijesh >=20 > > >> Subject: Re: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD=20 >> PcdPteMemoryEncryptionAddressOrMask >>=20 >> On 02/08/17 18:05, Yao, Jiewen wrote: >>> HI Leo >>> >>> Thanks to clarify that. >>> >>> >>> >>> If that is the case, do you think it will be better to limit this=20 >>> PCD to >>> X64 only in DEC file. Such as [PcdsDynamic.X64, PcdsDynamicEx.X64] >>=20 >> Not sure if this is the best place to raise the following=20 >> observation, but it should do: >>=20 >> please everyone remember that PcdDxeIplSwitchToLongMode is only TRUE=20 >> if PEI is 32-bit and DXE is 64-bit. It is FALSE in *two* cases: >> - both PEI and DXE are 32-bit, and >> - both PEI and DXE are 64-bit. >>=20 >> This doesn't necessarily invalidate anything said thus fair in the=20 >> thread, but the following statement from Leo: >>=20 >> The SEV feature requires 64-bit LongMode, so the >> PcdDxeIplSwitchtoLongMode *must* set to TRUE at build-time >>=20 >> does not follow. The PCD is FALSE in OvmfPkgX64.dsc. >>=20 >> Thanks, >> Laszlo >>=20 >>> >>> >>> >>> Thank you >>> >>> Yao Jiewen >>> >>> >>> >>> *From:*Duran, Leo [mailto:leo.duran@amd.com] >>> *Sent:* Wednesday, February 8, 2017 9:00 AM >>> *To:* Zeng, Star >=20 > >>;=20 > edk2-devel@ml01.01.org >> > >>> *Cc:* Laszlo Ersek >=20 > >>; Tian, Feng >>> >=20 > >>; Singh,=20 > Brijesh >=20 > >>; Yao, >>> Jiewen >=20 > >> >>> *Subject:* RE: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD=20 >>> PcdPteMemoryEncryptionAddressOrMask >>> >>> >>> >>> Pease see reply below. >>> Leo >>> >>>> -----Original Message----- >>>> From: Zeng, Star [mailto:star.zeng@intel.com] >>>> Sent: Tuesday, February 07, 2017 8:27 PM >>>> To: Duran, Leo >>> >>> %3cmailto:leo.duran@amd.com > %3cmailto:leo.duran@amd.com%3cmailto:leo.duran@amd.com=20 > %3cmailto:leo.duran@amd.com%0b>> %3cmailto:leo.duran@amd.com%3cmailto:leo.duran@amd.com=20 > %3cmailto:leo.duran@amd.com>>>>;=20 > edk2-devel@ml01.01.org >> > >>> >>>> Cc: Laszlo Ersek > >=20 > >>=20 > >; Tian, Feng > >=20 > >>=20 > >; >>>> Singh, Brijesh > >=20 > >>=20 > >; Zeng, Star > >=20 > >>=20 > >; >>>> Yao, Jiewen >>> >>> %3cmailto:jiewen.yao@intel.com > %3cmailto:jiewen.yao@intel.com%3cmailto:jiewen.yao@intel.com=20 > %3cmailto:jiewen.yao@intel.com%0b>> %3cmailto:jiewen.yao@intel.com%3cmailto:jiewen.yao@intel.com=20 > %3cmailto:jiewen.yao@intel.com>>>> >>>> Subject: RE: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD=20 >>>> PcdPteMemoryEncryptionAddressOrMask >>>> >>>> Does Create4GPageTablesIa32Pae() also need to be updated? >>>> >>>> Thanks, >>>> Star >>> [Duran, Leo] >>> Hi Star, >>> No, I do not think Create4GPageTablesIa32Pae() is in the execution path= . >>> >>> The SEV feature requires 64-bit LongMode, so the=20 >>> PcdDxeIplSwitchtoLongMode *must* set to TRUE at build-time, in which ca= se Create4GPageTablesIa32Pae() would *not* be called by HandOffToDxeCore(). >>> >>>> -----Original Message----- >>>> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf=20 >>>> Of Leo Duran >>>> Sent: Wednesday, February 8, 2017 3:54 AM >>>> To: edk2-devel@ml01.01.org >> >=20 >> >>>> Cc: Laszlo Ersek > >=20 > >>=20 > >; Tian, Feng > >=20 > >>=20 > >; >>>> Brijesh Singh > >=20 > >>=20 > >; Zeng, Star > >=20 > >>=20 > >; >>>> Leo Duran >>> >>> %3cmailto:leo.duran@amd.com > %3cmailto:leo.duran@amd.com%3cmailto:leo.duran@amd.com=20 > %3cmailto:leo.duran@amd.com%0b>> %3cmailto:leo.duran@amd.com%3cmailto:leo.duran@amd.com=20 > %3cmailto:leo.duran@amd.com>>>> >>>> Subject: [edk2] [PATCH] MdeModulePkg: Add dynamic PCD=20 >>>> PcdPteMemoryEncryptionAddressOrMask >>>> >>>> From: Brijesh Singh >>> >>> %3cmailto:brijesh.singh@amd.com > %3cmailto:brijesh.singh@amd.com%3cmailto:brijesh.singh@amd.com=20 > %3cmailto:brijesh.singh@amd.com%0b>> %3cmailto:brijesh.singh@amd.com%3cmailto:brijesh.singh@amd.com=20 > %3cmailto:brijesh.singh@amd.com>>>> >>>> >>>> This dynamic PCD holds the address mask for page table entries when=20 >>>> memory encryption is enabled on AMD processors supporting the=20 >>>> Secure Encrypted Virtualization (SEV) feature. >>>> >>>> Cc: Feng Tian >>> >>> %3cmailto:feng.tian@intel.com > %3cmailto:feng.tian@intel.com%3cmailto:feng.tian@intel.com=20 > %3cmailto:feng.tian@intel.com%0b>> %3cmailto:feng.tian@intel.com%3cmailto:feng.tian@intel.com=20 > %3cmailto:feng.tian@intel.com>>>> >>>> Cc: Star Zeng >>> >>> %3cmailto:star.zeng@intel.com > %3cmailto:star.zeng@intel.com%3cmailto:star.zeng@intel.com=20 > %3cmailto:star.zeng@intel.com%0b>> %3cmailto:star.zeng@intel.com%3cmailto:star.zeng@intel.com=20 > %3cmailto:star.zeng@intel.com>>>> >>>> Cc: Laszlo Ersek >>> >>> %3cmailto:lersek@redhat.com > %3cmailto:lersek@redhat.com%3cmailto:lersek@redhat.com=20 > %3cmailto:lersek@redhat.com%0b>> %3cmailto:lersek@redhat.com%3cmailto:lersek@redhat.com=20 > %3cmailto:lersek@redhat.com>>>> >>>> Contributed-under: TianoCore Contribution Agreement 1.0 >>>> Signed-off-by: Leo Duran >>> >>> %3cmailto:leo.duran@amd.com > %3cmailto:leo.duran@amd.com%3cmailto:leo.duran@amd.com=20 > %3cmailto:leo.duran@amd.com%0b>> %3cmailto:leo.duran@amd.com%3cmailto:leo.duran@amd.com=20 > %3cmailto:leo.duran@amd.com>>>> >>>> --- >>>> MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf | 5 ++++- >>>> MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c | 18 ++++++++++-- >>>> ------ >>>> MdeModulePkg/MdeModulePkg.dec | 8 ++++++++ >>>> 3 files changed, 22 insertions(+), 9 deletions(-) >>>> >>>> diff --git a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf >>>> b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf >>>> index 2bc41be..d62bd9b 100644 >>>> --- a/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf >>>> +++ b/MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf >>>> @@ -6,6 +6,8 @@ >>>> # needed to run the DXE Foundation. >>>> # >>>> # Copyright (c) 2006 - 2016, Intel Corporation. All rights=20 >>>> reserved.
>>>> +# Copyright (c) 2017, AMD Incorporated. All rights reserved.
=20 >>>> +# >>>> # This program and the accompanying materials # are licensed=20 >>>> and made available under the terms and conditions of the BSD=20 >>>> License # which accompanies this distribution. The full text of=20 >>>> the license may be found at @@ -111,7 +113,8 @@ [FeaturePcd] >>>> gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSupportUefiDecompress ##=20 >>>> CONSUMES >>>> >>>> [Pcd.IA32,Pcd.X64] >>>> - gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable ## >>>> SOMETIMES_CONSUMES >>>> + gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable = ## >>>> SOMETIMES_CONSUMES >>>> + >>>> gEfiMdeModulePkgTokenSpaceGuid.PcdPteMemoryEncryptionAddressOrM >>>> ask ## CONSUMES >>>> >>>> [Pcd.IA32,Pcd.X64,Pcd.ARM,Pcd.AARCH64] >>>> gEfiMdeModulePkgTokenSpaceGuid.PcdSetNxForStack ## >>>> SOMETIMES_CONSUMES >>>> diff --git a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c >>>> b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c >>>> index 790f6ab..2c52389 100644 >>>> --- a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c >>>> +++ b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c >>>> @@ -16,6 +16,8 @@ >>>> 3) IA-32 Intel(R) Architecture Software Developer's Manual=20 >>>> Volume 3:System Programmer's Guide, Intel >>>> >>>> Copyright (c) 2006 - 2016, Intel Corporation. All rights=20 >>>> reserved.
>>>> +Copyright (c) 2017, AMD Incorporated. All rights reserved.
>>>> + >>>> This program and the accompanying materials are licensed and made=20 >>>> available under the terms and conditions of the BSD License which=20 >>>> accompanies this distribution. The full text of the license may be=20 >>>> found at @@ -71,14 +73,14 @@ Split2MPageTo4K ( >>>> // >>>> // Fill in 2M page entry. >>>> // >>>> - *PageEntry2M =3D (UINT64) (UINTN) PageTableEntry | IA32_PG_P |=20 >>>> IA32_PG_RW; >>>> + *PageEntry2M =3D (UINT64) (UINTN) PageTableEntry | PcdGet64 >>>> + (PcdPteMemoryEncryptionAddressOrMask) | IA32_PG_P | IA32_PG_RW; >>>> >>>> PhysicalAddress4K =3D PhysicalAddress; >>>> for (IndexOfPageTableEntries =3D 0; IndexOfPageTableEntries < 512; >>>> IndexOfPageTableEntries++, PageTableEntry++, PhysicalAddress4K +=3D >>>> SIZE_4KB) { >>>> // >>>> // Fill in the Page Table entries >>>> // >>>> - PageTableEntry->Uint64 =3D (UINT64) PhysicalAddress4K; >>>> + PageTableEntry->Uint64 =3D (UINT64) PhysicalAddress4K | PcdGet64= =20 >>>> + (PcdPteMemoryEncryptionAddressOrMask); >>>> PageTableEntry->Bits.ReadWrite =3D 1; >>>> PageTableEntry->Bits.Present =3D 1; >>>> if ((PhysicalAddress4K >=3D StackBase) && (PhysicalAddress4K <=20 >>>> StackBase + >>>> StackSize)) { @@ -116,7 +118,7 @@ Split1GPageTo2M ( >>>> // >>>> // Fill in 1G page entry. >>>> // >>>> - *PageEntry1G =3D (UINT64) (UINTN) PageDirectoryEntry | IA32_PG_P |= =20 >>>> IA32_PG_RW; >>>> + *PageEntry1G =3D (UINT64) (UINTN) PageDirectoryEntry | PcdGet64 >>>> + (PcdPteMemoryEncryptionAddressOrMask) | IA32_PG_P | IA32_PG_RW; >>>> >>>> PhysicalAddress2M =3D PhysicalAddress; >>>> for (IndexOfPageDirectoryEntries =3D 0;=20 >>>> IndexOfPageDirectoryEntries < 512; >>>> IndexOfPageDirectoryEntries++, PageDirectoryEntry++,=20 >>>> IndexOfPageDirectoryEntries++PhysicalAddress2M >>>> +=3D SIZE_2MB) { @@ -129,7 +131,7 @@ Split1GPageTo2M ( >>>> // >>>> // Fill in the Page Directory entries >>>> // >>>> - PageDirectoryEntry->Uint64 =3D (UINT64) PhysicalAddress2M; >>>> + PageDirectoryEntry->Uint64 =3D (UINT64) PhysicalAddress2M | >>>> + PcdGet64 (PcdPteMemoryEncryptionAddressOrMask); >>>> PageDirectoryEntry->Bits.ReadWrite =3D 1; >>>> PageDirectoryEntry->Bits.Present =3D 1; >>>> PageDirectoryEntry->Bits.MustBe1 =3D 1; @@ -248,7 +250,7 @@=20 >>>> CreateIdentityMappingPageTables ( >>>> // >>>> // Make a PML4 Entry >>>> // >>>> - PageMapLevel4Entry->Uint64 =3D >>>> (UINT64)(UINTN)PageDirectoryPointerEntry; >>>> + PageMapLevel4Entry->Uint64 =3D >>>> + (UINT64)(UINTN)PageDirectoryPointerEntry | PcdGet64=20 >>>> + (PcdPteMemoryEncryptionAddressOrMask); >>>> PageMapLevel4Entry->Bits.ReadWrite =3D 1; >>>> PageMapLevel4Entry->Bits.Present =3D 1; >>>> >>>> @@ -262,7 +264,7 @@ CreateIdentityMappingPageTables ( >>>> // >>>> // Fill in the Page Directory entries >>>> // >>>> - PageDirectory1GEntry->Uint64 =3D (UINT64)PageAddress; >>>> + PageDirectory1GEntry->Uint64 =3D (UINT64)PageAddress |=20 >>>> + PcdGet64 (PcdPteMemoryEncryptionAddressOrMask); >>>> PageDirectory1GEntry->Bits.ReadWrite =3D 1; >>>> PageDirectory1GEntry->Bits.Present =3D 1; >>>> PageDirectory1GEntry->Bits.MustBe1 =3D 1; @@ -280,7 +282,7= =20 >>>> @@ CreateIdentityMappingPageTables ( >>>> // >>>> // Fill in a Page Directory Pointer Entries >>>> // >>>> - PageDirectoryPointerEntry->Uint64 =3D >>>> (UINT64)(UINTN)PageDirectoryEntry; >>>> + PageDirectoryPointerEntry->Uint64 =3D=20 >>>> + (UINT64)(UINTN)PageDirectoryEntry | PcdGet64=20 >>>> + (PcdPteMemoryEncryptionAddressOrMask); >>>> PageDirectoryPointerEntry->Bits.ReadWrite =3D 1; >>>> PageDirectoryPointerEntry->Bits.Present =3D 1; >>>> >>>> @@ -294,7 +296,7 @@ CreateIdentityMappingPageTables ( >>>> // >>>> // Fill in the Page Directory entries >>>> // >>>> - PageDirectoryEntry->Uint64 =3D (UINT64)PageAddress; >>>> + PageDirectoryEntry->Uint64 =3D (UINT64)PageAddress |=20 >>>> + PcdGet64 (PcdPteMemoryEncryptionAddressOrMask); >>>> PageDirectoryEntry->Bits.ReadWrite =3D 1; >>>> PageDirectoryEntry->Bits.Present =3D 1; >>>> PageDirectoryEntry->Bits.MustBe1 =3D 1; diff --git=20 >>>> a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec=20 >>>> index 273cd7e..207384f 100644 >>>> --- a/MdeModulePkg/MdeModulePkg.dec >>>> +++ b/MdeModulePkg/MdeModulePkg.dec >>>> @@ -6,6 +6,8 @@ >>>> # Copyright (c) 2007 - 2017, Intel Corporation. All rights=20 >>>> reserved.
# Copyright (c) 2016, Linaro Ltd. All rights=20 >>>> reserved.
# (C) Copyright 2016 Hewlett Packard Enterprise=20 >>>> Development LP
>>>> +# Copyright (c) 2017, AMD Incorporated. All rights reserved.
# >>>> # This program and the accompanying materials are licensed and=20 >>>> made available under # the terms and conditions of the BSD License=20 >>>> that accompanies this distribution. >>>> # The full text of the license may be found at @@ -1738,5 +1740,11=20 >>>> @@ [PcdsDynamic, PcdsDynamicEx] >>>> # @Prompt If there is any test key used by the platform. >>>> >>>> gEfiMdeModulePkgTokenSpaceGuid.PcdTestKeyUsed|FALSE|BOOLEAN|0x0 >>>> 0030003 >>>> >>>> + ## This dynamic PCD holds the address mask for page table=20 >>>> + entries when memory encryption is # enabled on AMD processors=20 >>>> + supporting the >>>> Secure Encrypted Virtualization (SEV) feature. >>>> + # This mask should be applied when creating 1:1 virtual to=20 >>>> + physical >>>> mapping tables. >>>> + # >>>> + >>>> + >>>> gEfiMdeModulePkgTokenSpaceGuid.PcdPteMemoryEncryptionAddressOrM >>>> ask|0x0 >>>> + |UINT64|0x00030004 >>>> + >>>> [UserExtensions.TianoCore."ExtraFiles"] >>>> MdeModulePkgExtra.uni >>>> -- >>>> 1.9.1 >>>> >>>> _______________________________________________ >>>> edk2-devel mailing list >>>> edk2-devel@lists.01.org >> >=20 >> >>>> https://lists.01.org/mailman/listinfo/edk2-devel >>> >> _______________________________________________ >> edk2-devel mailing list >> edk2-devel@lists.01.org > >> https://lists.01.org/mailman/listinfo/edk2-devel >>=20 >=20