On Tue, Jul 12, 2011 at 12:55:25PM +0300, Avi Kivity wrote: > Have a helper kernel thread do it for you. Or extend use_mm() to return > the old mm (without dropping its refcount) and add a way to restore it. Making use_mm usable for regular tasks too sounds like a good idea. Thanks. > Regarding LWP - I thought the intent was self-profiling by the process > for jits and the like? If you also use it for perf, won't it be > unusable for that? Also, can't the process interfere, from userspace, > by executing the unprivileged LWP instructions? Ingo made perf-integration a merge-requirement for LWP. It is not really well-suited for being integrated into perf because the design goal was easy and efficient self-profiling of tasks (like you stated). So integrating it into perf causes some pain. But lets see how it works out. Joerg -- 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
