On 09/12/2016 06:44 PM, Paolo Bonzini wrote: > I think that two CPUs doing reciprocal SIGPs could in principle end up > waiting on each other to complete their run_on_cpu. If the SIGP has to > be synchronous the fix is not trivial (you'd have to put the CPU in a > state similar to cpu->halted = 1), otherwise it's enough to replace > run_on_cpu with async_run_on_cpu.
IIRC the sigps are supossed to be serialized by the big QEMU lock. WIll have a look.
