Hello
> I was wondering if it makes sense for someone building a system on seL4 to > run certain drivers or other critical components in a more privileged > environment, but still outside the kernel. Does using a different CPU mode > in this context make sense? My hunch is that the case is no, because x86 No, it does not. You may want to run software at the lowest privilege it can run and microkernel environments can effectively work at the lowest privilege ring. What problem do you want to solve? > has those extra rings, but ARM only has two modes, Supervisor/System and > User mode, which would make it hard to provide any mechanism for the kernel > to manage privileged components, because of the differences between > platforms. -- Dr.-Eng. V. A. Sartakov _______________________________________________ Devel mailing list [email protected] https://sel4.systems/lists/listinfo/devel
