For OvmfPkg, reviewed-by: Jiewen Yao <jiewen....@intel.com> > -----Original Message----- > From: Xu, Min M <min.m...@intel.com> > Sent: Tuesday, November 1, 2022 1:14 PM > To: devel@edk2.groups.io > Cc: Xu, Min M <min.m...@intel.com>; Gao, Zhichao > <zhichao....@intel.com>; Kinney, Michael D > <michael.d.kin...@intel.com>; Liu, Zhiguang <zhiguang....@intel.com>; > Wang, Jian J <jian.j.w...@intel.com>; Gao, Liming > <gaolim...@byosoft.com.cn>; Ni, Ray <ray...@intel.com>; Aktas, Erdem > <erdemak...@google.com>; Gerd Hoffmann <kra...@redhat.com>; James > Bottomley <j...@linux.ibm.com>; Yao, Jiewen <jiewen....@intel.com>; > Tom Lendacky <thomas.lenda...@amd.com>; Gao, Jiaqi > <jiaqi....@intel.com> > Subject: [PATCH V5 00/10] Introduce Lazy-accept for Tdx guest > > 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()" > > As the first stage we accept all the memory under 4G. Please see the > discussion in https://edk2.groups.io/g/devel/message/93086 > > This patch-set is related to code first, so there is a edk2-staging branch. > Please see https://github.com/tianocore/edk2-staging/tree/TDVF > > Patch 1-4: > Introduce lazy-accept related definitions. > > Patch 5-6: > Update Dxe and shell for unaccepted memory. > > Patch 7: > Update OvmfPkg for unaccepted memory. > > Patch 8 - 10: > Introduce EfiMemoryAcceptProtocol and realize it in TdxDxe. > > Code: https://github.com/mxu9/edk2/tree/lazyaccept.v5 > > v5 changes: > - Rebase the patch-set to commit df7ce74e6c75. > - Add reviewed-by in MdeModulePkg/MdePkg related patches(#1/2/4/5/8). > - Add acked-by in patch#7. > > v4 changes: > - To follow the name convention of EDKII code first, the name of > EFI_RESOURCE_MEMORY_UNACCEPTED is updated to > BZ3937_EFI_RESOURCE_MEMORY_UNACCEPTED. > - Remove the definition of MaxAcceptedMemoryAddress because in > current > stage we will accept all the memory under 4G. So > MaxAcceptedMemoryAddress is not useable in this assumption. > - Because this is related to code first, there is edk2-staging branch. > The branch link is attached. > https://github.com/tianocore/edk2-staging/tree/TDVF > > v3 changes: > - As the first stage we accept all the memory under 4G. See the > discussion in https://edk2.groups.io/g/devel/message/93086 > - "Pool and page functions accept memory when OOM occurs" is dropped. > See the discussion in https://edk2.groups.io/g/devel/message/93086 > - PlatformAdjustSystemMemorySizeBelow4gbForLazyAccep is deleted > because in current stage we accept all the memory under 4G. > > v2 changes: > - Fix a typo that change EfiUnacceptedMemory to > EfiUnacceptedMemoryType. > - Define EFI_GCD_MEMORY_TYPE_UNACCEPTED in PrePiDxeCis.h because it > has > not been defined in PI spec. > - AllocatePages should return EFI_INVALID_PARAMETERS if input > MemoryType > is EfiUnacceptedMemoryType. > - Use EDKII_ prefix instead of EFI_ prefix in the protocol name of > EDKII_MEMORY_ACCEPT_PROTOCOL_GUID. Because this protocol is not > EFI > defined. > - Accept memory under 4G even if the PcdLazyAcceptPartialMemorySize is > bigger than 4G. So with this setting, even if the > PcdLazyAcceptPartialMemorySize is 0 (which means to accept all > memories), only the memory under 4G will be accepted. This is to > optimize the performance. > > 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 (1): > MdePkg: The prototype definition of EdkiiMemoryAcceptProtocol > > Min M Xu (9): > MdeModulePkg: Add PrePiHob.h > MdePkg: Increase EFI_RESOURCE_MAX_MEMORY_TYPE > OvmfPkg: Use BZ3937_EFI_RESOURCE_MEMORY_UNACCEPTED 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: Introduce lazy accept in PlatformInitLib and PlatformPei > OvmfPkg: Realize EdkiiMemoryAcceptProtocol in TdxDxe > OvmfPkg: Call gEdkiiMemoryAcceptProtocolGuid to accept pages > > MdeModulePkg/Core/Dxe/Gcd/Gcd.c | 6 + > MdeModulePkg/Core/Dxe/Mem/Page.c | 63 ++++++++--- > MdeModulePkg/Include/Pi/PrePiDxeCis.h | 25 +++++ > MdeModulePkg/Include/Pi/PrePiHob.h | 20 ++++ > MdePkg/Include/Pi/PiDxeCis.h | 10 +- > MdePkg/Include/Pi/PiHob.h | 11 +- > MdePkg/Include/Protocol/MemoryAccept.h | 37 +++++++ > MdePkg/Include/Uefi/UefiMultiPhase.h | 5 + > MdePkg/MdePkg.dec | 3 + > .../BaseMemEncryptTdxLib.inf | 3 + > .../BaseMemEncryptTdxLib/MemoryEncryption.c | 12 +- > OvmfPkg/Library/PeilessStartupLib/Hob.c | 5 +- > OvmfPkg/Library/PlatformInitLib/IntelTdx.c | 98 ++++++++++++++--- > OvmfPkg/Library/PlatformInitLib/MemDetect.c | 2 + > OvmfPkg/TdxDxe/TdxDxe.c | 103 ++++++++++++++++++ > OvmfPkg/TdxDxe/TdxDxe.inf | 2 + > .../UefiShellDebug1CommandsLib/MemMap.c | 13 +++ > .../UefiShellDebug1CommandsLib.uni | 3 +- > 18 files changed, 381 insertions(+), 40 deletions(-) > create mode 100644 MdeModulePkg/Include/Pi/PrePiDxeCis.h > create mode 100644 MdeModulePkg/Include/Pi/PrePiHob.h > create mode 100644 MdePkg/Include/Protocol/MemoryAccept.h > > -- > 2.29.2.windows.2
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