From: "Gerd Hoffmann" <kraxel@redhat.com>
To: "Yao, Jiewen" <jiewen.yao@intel.com>
Cc: "devel@edk2.groups.io" <devel@edk2.groups.io>,
"jejb@linux.ibm.com" <jejb@linux.ibm.com>,
"Xu, Min M" <min.m.xu@intel.com>,
Ard Biesheuvel <ardb+tianocore@kernel.org>,
"Justen, Jordan L" <jordan.l.justen@intel.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Erdem Aktas <erdemaktas@google.com>,
Tom Lendacky <thomas.lendacky@amd.com>
Subject: Re: [edk2-devel] [PATCH V3 15/29] OvmfPkg: Update SecEntry.nasm to support Tdx
Date: Thu, 25 Nov 2021 09:32:19 +0100 [thread overview]
Message-ID: <20211125083219.uiqbg7fsoervmdkq@sirius.home.kraxel.org> (raw)
In-Reply-To: <MW4PR11MB587200F24A8FE043D47CA0E68C619@MW4PR11MB5872.namprd11.prod.outlook.com>
Hi,
> So, my judgement is by removing PEI, we can reduce the risk introduce
> by PEI Core + PEI Arch PEIM*. Reducing code == Reducing Security Risk.
Yes, PEI Core goes away.
No, PEI Arch PEIM (aka OvmfPkg/PlatformPei) wouldn't go away, you would
only move the code to SEC or DXE phase, the platform initialization has
to happen somewhere.
Moving code to DXE has its problems as outlines by James at length.
Moving code to SEC has its problems too. SEC is a much more restricted
environment. A direct consequence is that you have re-invented
multiprocessor job scheduling (using tdx mailbox) instead of using
standard mp service for parallel accept. I do not account that as
"reducing complexity". And I've not yet seen the other changes you
have done for pei-less tdvf ...
take care,
Gerd
next prev parent reply other threads:[~2021-11-25 8:32 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 13:15 [PATCH V3 00/29] Enable Intel TDX in OvmfPkg (Config-A) Min Xu
2021-11-01 13:15 ` [PATCH V3 01/29] MdePkg: Add Tdx.h Min Xu
2021-11-01 13:15 ` [PATCH V3 02/29] MdePkg: Add TdxLib to wrap Tdx operations Min Xu
2021-11-02 14:06 ` Gerd Hoffmann
2021-11-10 4:58 ` [edk2-devel] " Min Xu
2021-11-10 10:38 ` Erdem Aktas
2021-11-12 2:38 ` Min Xu
2021-11-12 2:42 ` Yao, Jiewen
2021-11-12 5:29 ` Min Xu
2021-11-12 5:33 ` Yao, Jiewen
2021-11-01 13:15 ` [PATCH V3 03/29] UefiCpuPkg: Extend VmgExitLibNull to handle #VE exception Min Xu
2021-11-02 14:11 ` Gerd Hoffmann
2021-11-01 13:15 ` [PATCH V3 04/29] OvmfPkg: Extend VmgExitLib " Min Xu
2021-11-02 14:23 ` Gerd Hoffmann
2021-11-10 6:46 ` Min Xu
2021-11-17 0:32 ` Erdem Aktas
2021-11-01 13:15 ` [PATCH V3 05/29] UefiCpuPkg/CpuExceptionHandler: Add base support for the " Min Xu
2021-11-02 14:24 ` Gerd Hoffmann
2021-11-01 13:15 ` [PATCH V3 06/29] MdePkg: Add helper functions for Tdx guest in BaseIoLibIntrinsic Min Xu
2021-11-01 13:15 ` [PATCH V3 07/29] MdePkg: Support mmio " Min Xu
2021-11-01 13:15 ` [PATCH V3 08/29] MdePkg: Support IoFifo " Min Xu
2021-11-01 13:15 ` [PATCH V3 09/29] MdePkg: Support IoRead/IoWrite " Min Xu
2021-11-01 13:15 ` [PATCH V3 10/29] UefiPayloadPkg: PreparePrepare UefiPayloadPkg to use TdxLib Min Xu
2021-11-01 15:31 ` Guo Dong
2021-11-01 15:58 ` Ma, Maurice
2021-11-02 0:07 ` Min Xu
2021-11-02 14:32 ` Gerd Hoffmann
2021-11-01 13:16 ` [PATCH V3 11/29] UefiCpuPkg: Support TDX in BaseXApicX2ApicLib Min Xu
2021-11-02 14:33 ` Gerd Hoffmann
2021-11-01 13:16 ` [PATCH V3 12/29] UefiCpuPkg: Define ConfidentialComputingGuestAttr Min Xu
2021-11-02 14:36 ` Gerd Hoffmann
2021-11-03 8:32 ` [edk2-devel] " Min Xu
2021-11-01 13:16 ` [PATCH V3 13/29] MdePkg: Add macro to check SEV/TDX guest Min Xu
2021-11-02 14:36 ` Gerd Hoffmann
2021-11-01 13:16 ` [PATCH V3 14/29] UefiCpuPkg: Enable Tdx support in MpInitLib Min Xu
2021-11-03 6:09 ` Gerd Hoffmann
2021-11-03 12:57 ` Min Xu
2021-11-04 8:10 ` Gerd Hoffmann
2021-11-04 15:21 ` Lendacky, Thomas
2021-11-04 23:24 ` Min Xu
2021-11-05 6:46 ` [edk2-devel] " Gerd Hoffmann
2021-11-05 6:53 ` Min Xu
2021-11-09 2:44 ` Min Xu
2021-11-01 13:16 ` [PATCH V3 15/29] OvmfPkg: Update SecEntry.nasm to support Tdx Min Xu
2021-11-03 6:30 ` Gerd Hoffmann
2021-11-16 12:11 ` Min Xu
2021-11-17 15:19 ` Gerd Hoffmann
2021-11-18 9:59 ` Yao, Jiewen
2021-11-19 15:11 ` Gerd Hoffmann
2021-11-20 3:18 ` Yao, Jiewen
2021-11-23 12:38 ` Gerd Hoffmann
2021-11-23 13:07 ` Yao, Jiewen
2021-11-23 14:26 ` James Bottomley
2021-11-23 14:36 ` Yao, Jiewen
2021-11-23 14:51 ` James Bottomley
2021-11-23 15:10 ` Yao, Jiewen
2021-11-23 15:37 ` [edk2-devel] " James Bottomley
2021-11-24 3:15 ` Yao, Jiewen
2021-11-24 8:12 ` Gerd Hoffmann
2021-11-24 11:08 ` Yao, Jiewen
2021-11-24 13:35 ` James Bottomley
2021-11-24 14:03 ` Yao, Jiewen
2021-11-24 14:07 ` James Bottomley
2021-11-24 14:59 ` Yao, Jiewen
2021-11-25 8:32 ` Gerd Hoffmann [this message]
2021-11-26 6:29 ` Yao, Jiewen
2021-12-01 13:55 ` Gerd Hoffmann
2021-12-02 13:22 ` Yao, Jiewen
2021-12-06 14:57 ` Gerd Hoffmann
2021-12-07 2:28 ` Yao, Jiewen
2021-12-07 8:04 ` Gerd Hoffmann
2021-12-08 5:13 ` Min Xu
[not found] ` <16BA8381113E7B1B.22735@groups.io>
2021-11-24 15:30 ` Yao, Jiewen
[not found] ` <16BA5D1709524394.9880@groups.io>
2021-11-24 3:21 ` Yao, Jiewen
2021-11-01 13:16 ` [PATCH V3 16/29] OvmfPkg: Add IntelTdx.h in OvmfPkg/Include/IndustryStandard Min Xu
2021-11-01 13:16 ` [PATCH V3 17/29] OvmfPkg: Add TdxMailboxLib Min Xu
2021-11-01 13:16 ` [PATCH V3 18/29] MdePkg: Add EFI_RESOURCE_ATTRIBUTE_ENCRYPTED in PiHob.h Min Xu
2021-11-01 13:16 ` [PATCH V3 19/29] OvmfPkg: Enable Tdx in SecMain.c Min Xu
2021-11-01 13:16 ` [PATCH V3 20/29] OvmfPkg: Check Tdx in QemuFwCfgPei to avoid DMA operation Min Xu
2021-11-03 6:50 ` Gerd Hoffmann
2021-11-03 13:07 ` Min Xu
2021-11-03 13:35 ` Min Xu
2021-11-04 14:36 ` Brijesh Singh
2021-11-01 13:16 ` [PATCH V3 21/29] MdeModulePkg: EFER should not be changed in TDX Min Xu
2021-11-03 6:51 ` Gerd Hoffmann
2021-11-01 13:16 ` [PATCH V3 22/29] MdeModulePkg: Set shared bit in Mmio region for Tdx guest Min Xu
2021-11-03 6:57 ` Gerd Hoffmann
2021-11-04 7:03 ` [edk2-devel] " Min Xu
2021-11-01 13:16 ` [PATCH V3 23/29] UefiCpuPkg: Update AddressEncMask in CpuPageTable Min Xu
2021-11-03 7:00 ` Gerd Hoffmann
2021-11-22 3:09 ` [edk2-devel] " Ni, Ray
2021-12-07 3:50 ` Min Xu
2021-12-07 7:15 ` Gerd Hoffmann
2021-11-01 13:16 ` [PATCH V3 24/29] OvmfPkg: Update PlatformPei to support TDX Min Xu
2021-11-01 13:16 ` [PATCH V3 25/29] OvmfPkg: Update AcpiPlatformDxe to alter MADT table Min Xu
2021-11-01 13:16 ` [PATCH V3 26/29] OvmfPkg: Add TdxDxe driver Min Xu
2021-11-01 13:16 ` [PATCH V3 27/29] OvmfPkg/BaseMemEncryptTdxLib: Add TDX helper library Min Xu
2021-11-03 7:10 ` Gerd Hoffmann
2021-12-08 8:37 ` [edk2-devel] " Min Xu
2021-11-01 13:16 ` [PATCH V3 28/29] OvmfPkg/QemuFwCfgLib: Support Tdx in QemuFwCfgDxe Min Xu
2021-11-03 7:12 ` Gerd Hoffmann
2021-12-13 2:06 ` Min Xu
2021-11-01 13:16 ` [PATCH V3 29/29] OvmfPkg: Update IoMmuDxe to support TDX Min Xu
2021-11-03 7:17 ` Gerd Hoffmann
2021-12-13 2:39 ` [edk2-devel] " Min Xu
2021-12-13 6:42 ` Gerd Hoffmann
2021-12-13 7:33 ` Min Xu
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