RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 MMIO region in Tdx guest is set with PcdTdxSharedBitMask in TdxDxe's entry point. In SEV guest the page table entries is set

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 Guest Physical Address (GPA) space in Td guest is divided into private and shared sub-spaces, determined by the SHARED bit of GPA. This

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 In TDX IA32_ERER is RO to host VMM. It could not be changed. PcdIa32EferChangeAllowed is added in MdeModulePkg.dec and it is to be set to

RFC： https://bugzilla.tianocore.org/show_bug.cgi?id=3429 If TDX is enabled then we do not support DMA operation in PEI phase. This is mainly because DMA in TDX guest requires using bounce

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 There are below major changes in this commit. 1. SecEntry.nasm In TDX BSP and APs goes to the same entry point in SecEntry.nasm. BSP

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 EFI_RESOURCE_ATTRIBUTE_ENCRYPTED is Physical memory encrypted attribute. It indicates the memory uses platform encrpytion capabilities

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 In Tdx BSP may issues commands to APs for some task, for example, to accept pages paralelly. BSP also need to wait until all the APs have done

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 IntelTdx.h defines the defitions used by TDX in OvmfPkg: - Mailbox related defitions,such as the data structure, command code, AP

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 In TDVF BSP and APs are simplified. BSP is the vCPU-0, while the others are treated as APs. So MP intialization is rather simple. The

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 Add macros CC_GUEST_IS_SEV / CC_GUEST_IS_TDX to check SEV / TDX guest. Cc: Ray Ni <ray.ni@...> Cc: Eric Dong <eric.dong@...> Cc:

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 MSR is accessed in BaseXApicX2ApicLib. In TDX some MSRs are accessed directly from/to CPU. Some should be accessed via explicit requests from

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 This commit supports IoRead/IoWrite for SEV/TDX/Legacy guest in one binary. It checks the guest type in runtime and then call

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 Previously IoFifo functions are in X64/IoFifoSev.nasm which supports both SEV guest and Legacy guest. IoLibFifo.c is introduced to

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 TDVF access MMIO with TDG.VP.VMCALL to invoke VMM provided emulation functions. If the access to MMIO fails, it fall backs to the

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 Intel TDX architecture does not prescribe a specific software convention to perform I/O from the guest TD. Guest TD providers have many

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 Add base support to handle #VE exceptions. Update the common exception handlers to invoke the VmTdExitHandleVe () function of the

RFC： https://bugzilla.tianocore.org/show_bug.cgi?id=3429 The base VmgExitLib library provides a default limited interface to handle #VE exception. To provide full support, the OVMF version

RFC： https://bugzilla.tianocore.org/show_bug.cgi?id=3429 VmgExitLib performs the necessary processing to handle a #VC exception. VmgExitLibNull is a NULL instance of VmgExitLib which provides

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 TdxLib is created with functions to perform the related Tdx operation. This includes functions for: - TdAcceptPages : Accept pending

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 Introduce basic Tdx functions in BaseLib: - TdCall () - TdVmCall () - TdIsEnabled () Cc: Liming Gao <gaoliming@...> Cc: Brijesh