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.
