Re: [Qemu-devel] vhost, iova, and dirty page tracking

[Paolo Bonzini]

On 19/09/19 14:39, Jason Wang wrote:
>> In general, userspace cannot assume that it's okay to sync just through
>> GPA1.  It must sync the host page if *either* GPA1 or GPA2 are marked
>> dirty.
> 
> Maybe we need document this somewhere.

Well, it's implicit but it should be kind of obvious.  The dirty page
only tells you that the guest wrote to the GPA, HVAs are never mentioned
in the documentation.

Paolo

> Any other issue that still need to be covered consider userspace need to
> sync both GPAs?
> 
> Thanks
>