On Sun, 2025-08-10 at 13:51 +0800, Tiwei Bie wrote: > From: Tiwei Bie <tiwei....@antgroup.com> > > Add initial symmetric multi-processing (SMP) support to UML. With > this support enabled, users can tell UML to start multiple virtual > processors, each represented as a separate host thread. > > In UML, kthreads and normal threads (when running in kernel mode) > can be scheduled and executed simultaneously on different virtual > processors. However, the userspace code of normal threads still > runs within their respective single-threaded stubs. > > That is, SMP support is currently available both within the kernel > and across different processes, but still remains limited within > threads of the same process in userspace.
Another thing that isn't covered is anything relating to interrupt affinity, I guess? Is that automatically not working, or will it look like you can change things but that not do anything? I don't think it's important now (though eventually I would actually like to have it for our simulations), but was just thinking about it. johannes
