Re: [PATCH v8 05/16] x86/virt/tdx: Implement functions to make SEAMCALL

[Dave Hansen]

The subject here is a bit too specific.  This patch isn't just
"implementing functions".  There are more than just functions here.  The
best subject is probably:

	Add SEAMCALL infrastructure

But that's rather generic by necessity because this patch does several
_different_ logical things:

 * Wrap TDX_MODULE_CALL so it can be used for SEAMCALLs with host=1
 * Add handling to TDX_MODULE_CALL to allow it to handle specifically
   host-side error conditions
 * Add high-level seamcall() function with actual error handling

It's probably also worth noting that the code that allows "host=1" to be
passed to TDX_MODULE_CALL is dead code in mainline right now.  It
probably shouldn't have been merged this way, but oh well.

I don't know that you really _need_ to split this up, but I'm just
pointing out that mashing three different logical things together makes
it hard to write a coherent Subject.  But, I've seen worse.