Hello Anton, On Wed, 05 Feb 2020 19:49:37 +0900, Anton Ivanov wrote: > >>> arch/um/lkl/include/asm/irq.h | 13 ++ > >>> arch/um/lkl/include/uapi/asm/irq.h | 36 ++++ > >>> arch/um/lkl/include/uapi/asm/sigcontext.h | 16 ++ > >>> arch/um/lkl/kernel/irq.c | 193 ++++++++++++++++++++++ > >> > >> Like I said before, this also something to unify with UML. > >> I'm aware that this is easily said but we cannot have too much duplication. > >> > >> Feel free to ask if UML internals give you headache. :-) > > > > Same as nommu implementation, I left this part as-is. > > > > Triggering interrupts with fd events (delivered by epoll&co) is a hard > > part to implement host-independent interrupts of LKL. OTOH, the v3 > > patchset shows that it is doable to use UML drivers with the LKL > > interrupt facility. > > Make sure you are testing with the vector network devices, the > legacy ones are scheduled to be obsoleted at some point I was aware of the commit to obsolete several backend with the vector device, but did not include in the patchset and tests. I will try to do it for the next round. > I know this will cause a headache on non-Linux, I am happy to write > wrappers/emulators for recvmms/sendmmsg so these build on the > systems which do not support them. If UML is going to extend to support non-Linux host, yes, those kind of wrappers will be helpful. Right now, the patchset only focuses on x86 hosts so, this can be postponed. -- Hajime
