The port is a technical problem, it has nothing to do with commercial or non-commercial.
If the port can be done without changing or reverse-engineering the RM, then it is allowed (that means the middleware needs to be a wrapper, not a converter or modifying the engine)
It might be that there is an official converter in alpha-status (so far the converter has only been confirmed for a mobile platform, but it might be able to handle other formats as well), but that converter probably won't be available for purchase until next year (2016) or even later as it isn't even in Beta yet and the alpha-tester reported a lot of quirks using it.
I think, based on what Andar said, you can legally use WINE or another Windows emulation layer to run RPG Maker. If you make a WINE configuration (or whatever Windows emulation layer you use) and you feel comfortable charging for it AND handling all of the many support issues that come up, you can legally sell RPG Maker games for Linux and the Mac.
That's as long as whatever Windows layer you use allows this type of licensing.
But, I have heard other people use WINE to run RPG Maker games, and they said it took a lot of configuration to get running properly.
So it might be a lot more trouble than it's worth, since RPG Maker does not natively run on Linux or the Mac. Would you get enough sales to justify the support costs of supporting both your game AND its Windows emulation layer?
I went to sleep at 3 am because of my anxiety. Set up my alarm for 7 am so that I could have sasagues for breakfast and do morning routine before lessons starts at 8 am. I knew I wouldn't be able to sleep even after my lessons finished because I have to visit my grandparents today I was sad bc I was really tired. Thats when I realised. My lesson starts at 9 am. I could get one extra hour of sleep if I didnt forget it