On 26 June 2015 at 15:25, Paolo Bonzini <pbonz...@redhat.com> wrote: > > > On 26/06/2015 16:04, Peter Maydell wrote: >> Ping? > > Oh, YIELD was what I was thinking of in the thread about IPIs, not WFE > (which would require SEV on the other core)...
Linux doesn't in practice put YIELD insns into its busy loops, so this series is more of a completeness thing than an actual attempt to solve the problem in the other thread. I think the right fix for the other thread's problems is that we should not allow any TCG CPU to run for an unbounded period of time -- we should always switch to another CPU after some period of time if the CPU hasn't ended up coming back out to the top-level loop of its own accord. That's definitely post-2.4 material though. -- PMM
