These three patches build on the lazy-accept patch series "Introduce Lazy-accept for Tdx guest"
by adding SEV-SNP support for the MemoryAccept protocol, and importantly making eager memory acceptance the default behavior. For unaccepted memory to be enabled, we must know that the booted image supports the unaccepted memory type. We add a trivial protocol that sets a dynamic Pcd to true when called in order for the booted image to signal its support for unaccepted memory. This does not need to be an OsIndications bit because it does not need to be persisted. We use the Pcd to disable a new ExitBootServices notification that accepts all unaccepted memory, removes the unaccepted memory entries in the memory space map, and then add the same memory ranges back as conventional memory. All images that support unaccepted memory must now locate and call this new ENABLE_UNACCEPTED_MEMORY_PROTOCOL. Changes since v1: - Added a patch to classify SEV-SNP memory above 4GB unaccepted. - Fixed style problems in EfiMemoryAcceptProtocol implementation. Dionna Glaze (4): OvmfPkg: Realize EfiMemoryAcceptProtocol in AmdSevDxe DxeMain accepts all memory at EBS if needed MdeModulePkg: add EnableUnacceptedMemoryProtocol OvmfPkg/PlatformPei: SEV-SNP make >=4GB unaccepted MdeModulePkg/Core/Dxe/DxeMain.h | 32 +++++ MdeModulePkg/Core/Dxe/DxeMain.inf | 3 + MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c | 19 ++- MdeModulePkg/Core/Dxe/Mem/Page.c | 122 ++++++++++++++++++ MdeModulePkg/MdeModulePkg.dec | 9 ++ MdeModulePkg/MdeModulePkg.uni | 6 + OvmfPkg/AmdSev/AmdSevX64.dsc | 1 + OvmfPkg/AmdSevDxe/AmdSevDxe.c | 34 +++++ OvmfPkg/AmdSevDxe/AmdSevDxe.inf | 3 + OvmfPkg/Bhyve/BhyveX64.dsc | 2 + OvmfPkg/CloudHv/CloudHvX64.dsc | 2 + OvmfPkg/Include/Library/MemEncryptSevLib.h | 14 ++ OvmfPkg/IntelTdx/IntelTdxX64.dsc | 2 + .../Ia32/MemEncryptSevLib.c | 17 +++ .../X64/DxeSnpSystemRamValidate.c | 35 +++++ .../X64/PeiSnpSystemRamValidate.c | 17 +++ .../X64/SecSnpSystemRamValidate.c | 18 +++ OvmfPkg/OvmfPkgIa32X64.dsc | 2 + OvmfPkg/OvmfPkgX64.dsc | 2 + OvmfPkg/OvmfXen.dsc | 2 + OvmfPkg/PlatformPei/AmdSev.c | 4 + 21 files changed, 345 insertions(+), 1 deletion(-) -- 2.37.3.998.g577e59143f-goog -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#94250): https://edk2.groups.io/g/devel/message/94250 Mute This Topic: https://groups.io/mt/93879403/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
