On 30 November 2016 at 09:05, Andrew Jones <drjo...@redhat.com> wrote: > The problem is indeed with the scheduling. The way it currently works > is to depend on the iothread to kick a reschedule once in a while, or > a cpu to issue an instruction that does so (wfe/wfi). However if > there's no io and a cpu never issues a scheduling instruction, then it > won't happen. We either need a sched tick or to never have an infinite > iothread ppoll timeout (basically using the ppoll timeout as a tick).
Ah yes, that one. I thought Alex had a patch which added a timer to ensure that we don't allow a single guest TCG vCPU to hog the execution thread, but maybe I'm misremembering. thanks -- PMM
