On 08/14/2012 05:00 PM, Jan Kiszka wrote: >>> The host can prevent this by leaving disabling the guest pmu. But >>> disabling jump labels for real-time kernels may be acceptable too. We >>> can probably to it at run time by forcing the slow path at all times. >> Yes, it is possible to add module option that will force slow path if >> needed. > > Should I write a patch or will you? Having host-side stop_machine due to > such common guest operations is indeed a no-go for RT. > Note that an additional patch is needed for perf, otherwise the guest (or a user, but that's less of a concern for realtime) can easily invoke stop_machine by configuring and unconfiguring its pmu. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
