On 23/06/2015 15:49, Frederic Konrad wrote: >> >> Hopefully, multithreaded TCG will get rid of the whole logic to kick >> VCPUs whenever an I/O event occurs! > Hopefully :), this means dropping the iothread mutex as soon as possible > and removing the iothread_requesting_mutex I guess..
Yes---running most of cpu_exec outside the BQL, like KVM. io_read and io_write would have to get and release the lock if necessary. cpu_resume_from_signal also might have to release the lock. Paolo
