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2024 16:01:25 +0000 Message-ID: <872aab36-ea9a-4236-9407-4b6a6cf4273a@amd.com> Date: Thu, 1 Feb 2024 10:01:23 -0600 User-Agent: Mozilla Thunderbird Subject: Re: [edk2-devel] [PATCH v2 0/5] OvmfPkg: Add support for 5-level paging To: Laszlo Ersek , devel@edk2.groups.io, kraxel@redhat.com Cc: Erdem Aktas , Oliver Steffen , Jiewen Yao , Ard Biesheuvel , Min Xu , Michael Roth , Liming Gao References: <20240130123204.764453-1-kraxel@redhat.com> <5b3531b4-2d5a-1d7a-93ff-347fd0f06041@redhat.com> From: "Lendacky, Thomas via groups.io" Autocrypt: addr=thomas.lendacky@amd.com; keydata= xsFNBFaNZYkBEADxg5OW/ajpUG7zgnUQPsMqWPjeAxtu4YH3lCUjWWcbUgc2qDGAijsLTFv1 kEbaJdblwYs28z3chM7QkfCGMSM29JWR1fSwPH18WyAA84YtxfPD8bfb1Exwo0CRw1RLRScn 6aJhsZJFLKyVeaPO1eequEsFQurRhLyAfgaH9iazmOVZZmxsGiNRJkQv4YnM2rZYi+4vWnxN 1ebHf4S1puN0xzQsULhG3rUyV2uIsqBFtlxZ8/r9MwOJ2mvyTXHzHdJBViOalZAUo7VFt3Fb aNkR5OR65eTL0ViQiRgFfPDBgkFCSlaxZvc7qSOcrhol160bK87qn0SbYLfplwiXZY/b/+ez 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3xB+EwkSeDB8Q9jg829G4iJsL6H30mU9E8+MYQ9OR7jtLlG0ofxNoMQY+UCX0IF7VpaeK5Ffktzw96VOsVC2aw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB9036 Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,thomas.lendacky@amd.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: avKWhLBFJmMhZokSckpwTCBTx7686176AA= Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-GND-Status: LEGIT Authentication-Results: spool.mail.gandi.net; dkim=pass header.d=groups.io header.s=20140610 header.b=LM9FeJ7Z; dmarc=none; spf=pass (spool.mail.gandi.net: domain of bounce@groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce@groups.io On 1/30/24 13:15, Laszlo Ersek wrote: > On 1/30/24 13:31, Gerd Hoffmann wrote: >> Patch #1 has been submitted separately last week. >> Intewl raised concerns that removing or renaming >> the PCD breaks platforms, so I'm just doing the >> minimal fix here. >> >> Patch #2 + #3 update OvmfPkg ResetVector and >> PlatformInitLib for 5-level paging support. >> >> Tom, Min: can you test this patch set with SEV / TDX? >=20 > I'll merge the series when those tests succeed. (Please keep me CC'd.) I replied to the patch 4/5 with some comments. As long as the PcdUse5LevelPageTable PCD is FALSE, this series doesn't=20 appear to affect SEV. When PcdUse5LevelPageTable is set to TRUE, the CPUID calls in=20 OvmfPkg/ResetVector/Ia32/PageTables64.asm will cause an SEV-ES/SEV-SNP=20 guest to crash because there is no #VC handler established. When PcdUse5LevelPageTable is set to TRUE, an SEV guest will ASSERT: AmdSevDxe:SetMemoryEncDec: bad PML4 for Physical=3D0x8000000000 ASSERT_EFI_ERROR (Status =3D No mapping) The SEV code in BaseMemEncryptSevLib was written before the page table=20 library support was developed, and as such, only supports 4-level paging.= =20 So the SEV page table support needs updating. Thanks, Tom >=20 > Thanks > Laszlo >=20 >> >> v2 changes: >> - fix sev/tdx handling with 5-level paging. >> - more comments for 5-level page table setup. >> - improve PAGE_* naming (new patch #3). >> - rename Page5LevelSupported to Page5LevelEnabled (new patch #2). >> - pick up some review tags. >> >> Gerd Hoffmann (5): >> MdeModulePkg/DxeIplPeim: fix PcdUse5LevelPageTable assert >> MdeModulePkg/DxeIplPeim: rename variable >> OvmfPkg/ResetVector: improve page table flag names >> OvmfPkg/ResetVector: add 5-level paging support >> OvmfPkg/PlatformInitLib: add 5-level paging support >> >> OvmfPkg/ResetVector/ResetVector.inf | 1 + >> .../Core/DxeIplPeim/X64/VirtualMemory.c | 24 ++-- >> OvmfPkg/Library/PlatformInitLib/MemDetect.c | 57 ++++++--- >> OvmfPkg/ResetVector/Ia32/PageTables64.asm | 116 +++++++++++++++--- >> OvmfPkg/ResetVector/ResetVector.nasmb | 1 + >> 5 files changed, 152 insertions(+), 47 deletions(-) >> >=20 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#114950): https://edk2.groups.io/g/devel/message/114950 Mute This Topic: https://groups.io/mt/104052206/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-