On Thu, 2012-02-23 at 20:33 +0900, Takuya Yoshikawa wrote: > - Stop allocating extra dirty bitmap buffer area > > According to Peter, mmu_notifier has become preemptible. If we can > change mmu_lock from spin_lock to mutex_lock, as Avi said before, this > would be staightforward because we can use __put_user() right after > xchg() with the mmu_lock held
So the 'only' thing to consider is running the end result with lockdep enabled since the mmu locks are rather deep in the nesting tree its very easy to accidentally cause inversions. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
