[coyotos-dev] Cross-model IPC

[Charles Landau]

>   2. All of the fast IPC transports define the "direct" payload
>      in terms of register-sized words, not bytes.

Why is this a given?

Couldn't you define a single message payload (presumably 64 bit 
words) and give 32-bit programs the option of extending 32-bit words 
to 64 bits when sending? When receiving, the options might be to 
truncate, or use two 32-bit words to receive each 64-bit datum.