[dpdk-dev] [PATCH 3/4] vhost: log vring changes

[Xie, Huawei]

On 12/2/2015 10:09 PM, Victor Kaplansky wrote:
> On Wed, Dec 02, 2015 at 11:43:12AM +0800, Yuanhan Liu wrote:
>> Invoking vhost_log_write() to mark corresponding page as dirty while
>> updating used vring.
> Looks good, thanks!
>
> I didn't find where you log the dirty pages in result of data
> written to the buffers pointed by the descriptors in RX vring.
> AFAIU, the buffers of RX queue reside in guest's memory and have
> to be marked as dirty if they are written. What do you say?
Yes, that is actually the majority of the work.
Besides, in the first version, we could temporarily ignore zero copy,
which is much more complicated, as we have no idea when the page has
been accessed.
-- Huawei
>
> -- Victor
>
>