On Fri, Jun 26, 2015 at 7:28 AM, Peter Maydell <peter.mayd...@linaro.org> wrote: > 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. >
So it does for AA64 now: https://lkml.org/lkml/2015/3/2/672 Should we submit the same patch to Linux for AA32? > 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. Agree. The guest should not be able to break the emulation. Regards, Peter > > -- PMM >
