- This is a workaround that does not belong in a kernel primitive.

- This can happen if called from an idle or suspension thread.

The second input buffer could be optional when prepo/srepo is called, test for the availability of the second buffer prior to reading from it.

Allows us to test whether a buffer can be read from or written to memory

Used by homebrew menu

Used by Zelda Breath of the Wild, Super Mario Odyssey and Nintendo Labo

Found this via a warning, but it's a substantive fix.

Since this is only for a cache, it should be safe to silently drop the
entry if opening fails.  I think.

- Used by Monster Hunter Rise demo.

Pretty basic service, only thing left to do is handle setting applying once set:sys is implemented

Cleaned up mii raw data to reflect the underlying values instead of just a chunk of bytes.
Fixed BuildRandomStoreData not actually generating random miis properly. "values" should be a u32, not a u8.