[dpdk-dev] [PATCH v2 3/6] vhost: log used vring changes

[Xie, Huawei]

On 12/22/2015 2:56 PM, Peter Xu wrote:
> On Thu, Dec 17, 2015 at 11:11:58AM +0800, Yuanhan Liu wrote:
>> +static inline void __attribute__((always_inline))
>> +vhost_log_used_vring(struct virtio_net *dev, struct vhost_virtqueue *vq,
>> +		     uint64_t offset, uint64_t len)
>> +{
[...]
> Got a question here:
>
> I see that we are logging down changes when we are marking
> used_vring. Do we need to log down buffer copy in rte_memcpy() too?
> I am not sure whether I understand it correctly, it seems that this
> is part of DPDK API ops to deliver data to the guest (from, e.g.,
> OVS?), when we do rte_memcpy(), we seems to be modifying guest
> memory too. Am I wrong?
>
> Peter

desc buffer logging isn't included in v1, but in the patch 4 of this
patch set, and actually it is the major work in vhost live migration.
    --huawei

[...]