[PATCH v4 0/6] Drop vhost async (DMA-accelerated) datapath

[Maxime Coquelin]

On 10/14/26 5:57 PM, David Marchand wrote:
> The integration of this feature in OVS has been postponed following
> feedback how the current API forced the complexity on the application
> side. There is no contributor working on making those changes.
> 
> The feature has no other identified opensource consumer.
> 
> On the other hand, this feature has been left unattended for some years
> now while the "normal" datapath is actively maintained.
> It is highly likely the async datapath code, which never underwent a
> stabilisation phase, is riddled with bugs.
> 
> Given the craziness around finding security bugs with AI,
> and since the vhost library is a good target, I propose to drop
> this feature and reduce the library attack surface.
> 
> There is one complication with the vhost_crypto and some external
> applications that seemed to rely on the async flag to track and populate
> guest pages, so a new flag replacing async is added by this series.
> 
> 

Applied to next-virtio/for-next-net.

Thanks!
Maxime