On 04/09/2012 10:46 PM, Marcelo Tosatti wrote: > Perhaps the mmu_lock hold times by get_dirty are a large component here? > If that can be alleviated, not only RO->RW faults benefit. > > Currently the longest holder in normal use is probably reading the dirty log and write protecting the shadow page tables. We could fix that by switching to O(1) write protection (write-protecting PML4Es instead of PTEs). It would be interesting to combine O(1) write protection with lockless write-enabling. -- 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
