On 03/02/15 17:47, Paolo Bonzini wrote:

Also, we may want to invalidate the cache for dirty pages before
returning the dirty bitmap, and probably should do that directly in
KVM_GET_DIRTY_LOG.

"I agree."

If KVM_GET_DIRTY_LOG is supposed to be atomic fetch and clear (from
userspace's aspect), then the cache invalidation should be an atomic
part of it too (from the same aspect).

(Sorry if I just said something incredibly stupid.)

Laszlo