Incorrect invocation of SmiManage()?

[Achin Gupta <achin.gupta@arm.com>]

Hi,

The SMM specification (Vol4. PI v1.4) says in the description of the SmiManage()
function:

"
If NULL is passed in HandlerType, then only those registered handler functions
which passed NULL as their HandlerType will be called. If NULL is passed in
HandlerType, then Context should be NULL, CommBuffer should point to an instance
of EFI_SMM_ENTRY_CONTEXT and CommBufferSize should point to the size of that
structure. Type EFI_SMM_ENTRY_CONTEXT is defined in “Related Definitions” below.
"

However, in MdeModulePkg/Core/PiSmmCore/PiSmmCore.c, there is an invocation of
this function as follows for handling an asynchronous SMI source:

"
  //
  // Process Asynchronous SMI sources
  //
  SmiManage (NULL, NULL, NULL, NULL);
"

Is this invocation not in violation of the specification. I guess the root SMI
handler is accessing the EFI_SMM_ENTRY_CONTEXT information directly from the
SMST? I cannot see how this information could be made available to the root
handler otherwise.

Can anyone please confirm/clarify this?

Thanks,
Achin

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