> Jeff Dike expressed interest in doing it, but I don't think he has done > any of the regset work. What's there now (in utrace-tracehook-um.patch) > is just the tracehook branch part of the work, which is enough simply to > get UML to compile and work again with CONFIG_UTRACE=n (and hence, no > ptrace). Correct. And I welcome anyone doing the UML utrace work :-) I'll be happy to provide whatever help is needed. > UML is different from a normal port, because it is not an architecture > itself, but is a different variant port of each other architecture. The > regset details are already chosen for each arch, and just need to be > implemented compatibly in the UML context. UML is its own architecture. It is definitely not a variant of the underlying arch. Probably 90% is the same on all arches, as they all have the same system call interface. The remaining part is the architecture stuff which shows through, like the register set (which ptrace/utrace has to deal with more than the other subsystems). Jeff
