RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3937
UnacceptedMemory is one of the four defined types of TD memory in Intel TDX guest. TDVF must invoke TDCALL [TDG.MEM.PAGE.ACCEPT] the unaccepted memory before use it. See [TDVF] Section 7.1. TDVF: https://www.intel.com/content/dam/develop/external/us/en/ documents/tdx-virtual-firmware-design-guide-rev-1.01.pdf It is a time-consuming task which impacts the boot performance badly. One of the mitigation is the lazy-accept mechanism. That the whole system memory is divided into 2 parts, one is accepted in bios phase, the other is tagged as EfiGcdMemoryTypeUnaccepted and OS will handle these "unaccepted" memories. See "UEFI Spec v2.9 Table 7-5 Memory Type Usage before ExitBootServices()" Patch 1-4: Introduce lazy-accept related definitions. Patch 5-6: Update Dxe and shell for unaccepted memory. Patch 7 - 11: Update OvmfPkg for unaccepted memory. Patch 12 - 13: Introduce EfiMemoryAcceptProtocol and realize it in TdxDxe. Patch 14: Update Pool and Page functions to accept memory when OOM occurs. Code: https://github.com/mxu9/edk2/tree/lazyaccept.v1 Cc: Zhichao Gao <zhichao....@intel.com> Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Zhiguang Liu <zhiguang....@intel.com> Cc: Jian J Wang <jian.j.w...@intel.com> Cc: Liming Gao <gaolim...@byosoft.com.cn> Cc: Ray Ni <ray...@intel.com> Cc: Erdem Aktas <erdemak...@google.com> Cc: Gerd Hoffmann <kra...@redhat.com> Cc: James Bottomley <j...@linux.ibm.com> Cc: Jiewen Yao <jiewen....@intel.com> Cc: Tom Lendacky <thomas.lenda...@amd.com> Signed-off-by: Jiaqi Gao <jiaqi....@intel.com> Signed-off-by: Min Xu <min.m...@intel.com> Jiaqi Gao (2): MdePkg: The prototype definition of EfiMemoryAcceptProtocol MdeModulePkg: Pool and page functions accept memory when OOM occurs Min M Xu (12): MdeModulePkg: Add PrePiHob.h MdePkg: Increase EFI_RESOURCE_MAX_MEMORY_TYPE OvmfPkg: Use EFI_RESOURCE_MEMORY_UNACCEPTED which defined in MdeModulePkg MdePkg: Add UEFI Unaccepted memory definition MdeModulePkg: Update Dxe to handle unaccepted memory type ShellPkg: Update shell command memmap to show unaccepted memory OvmfPkg: Add PCD and DEFINEs for Lazy Accept page. OvmfPkg: Use PcdOvmfWorkAreaBase instead of PcdSevEsWorkAreaBase OvmfPkg: Add MaxAcceptedMemoryAddress in TDX work area OvmfPkg: Introduce lazy accept in PlatformInitLib and PlatformPei OvmfPkg: Update ConstructFwHobList for lazy accept OvmfPkg: Realize EfiMemoryAcceptProtocol in TdxDxe MdeModulePkg/Core/Dxe/DxeMain.inf | 1 + MdeModulePkg/Core/Dxe/Gcd/Gcd.c | 5 + MdeModulePkg/Core/Dxe/Mem/Imem.h | 16 ++ MdeModulePkg/Core/Dxe/Mem/Page.c | 218 ++++++++++++++++++ MdeModulePkg/Core/Dxe/Mem/Pool.c | 14 ++ MdeModulePkg/Include/Pi/PrePiHob.h | 20 ++ MdePkg/Include/Pi/PiDxeCis.h | 5 + MdePkg/Include/Pi/PiHob.h | 11 +- MdePkg/Include/Protocol/MemoryAccept.h | 37 +++ MdePkg/Include/Uefi/UefiMultiPhase.h | 5 + MdePkg/MdePkg.dec | 3 + OvmfPkg/Include/Library/PlatformInitLib.h | 6 + OvmfPkg/Include/WorkArea.h | 1 + OvmfPkg/IntelTdx/IntelTdxX64.dsc | 8 + .../PrePiHobListPointer.c | 4 +- .../PrePiHobListPointerLibTdx.inf | 2 +- OvmfPkg/Library/PeilessStartupLib/Hob.c | 26 ++- .../PeilessStartupLib/PeilessStartupLib.inf | 1 + OvmfPkg/Library/PlatformInitLib/IntelTdx.c | 145 +++++++++++- OvmfPkg/Library/PlatformInitLib/MemDetect.c | 27 +++ .../PlatformInitLib/PlatformInitLib.inf | 1 + OvmfPkg/OvmfPkg.dec | 4 + OvmfPkg/OvmfPkgX64.dsc | 9 + OvmfPkg/PlatformPei/MemDetect.c | 5 + OvmfPkg/TdxDxe/TdxDxe.c | 103 +++++++++ OvmfPkg/TdxDxe/TdxDxe.inf | 2 + .../UefiShellDebug1CommandsLib/MemMap.c | 6 + 27 files changed, 666 insertions(+), 19 deletions(-) create mode 100644 MdeModulePkg/Include/Pi/PrePiHob.h create mode 100644 MdePkg/Include/Protocol/MemoryAccept.h -- 2.29.2.windows.2 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#90216): https://edk2.groups.io/g/devel/message/90216 Mute This Topic: https://groups.io/mt/91570192/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
