hi, here is what i understand how mmio is handled in kvm. - mmio range is registered with kvm from userspace. - this range is then write-protected in kernel - mmio write will be handled as page-fault inside kernel - so there is no userspace is involved when mmio write is handled. please can someone confirm this understanding is correct, or not? many thanks, Jun -- 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