ESP32 Forum

Has anyone tried something like this?
Since the ESP32-C3 is based on RISC-V, I thought that it would be possible to directly port Linux. (Not a RISC virtual machine.)

I wouldn't think so. 400K of RAM is simply too little. I think technically it would be possible to port Linux to e.g. the ESP32S3, but you'd need to do that with MMU-less Linux and it'd probably take a fair amount of work to get it working as the architecture is different from what Linux expects.