[Virtio-msg] Re: How to send VIRTIO_MSG_EVENT_USED ?

On 18-02-25, 15:30, Andrei Homescu wrote:

Hi Viresh,

I'll try to respond to your first question: indirect messages require FF-A notifications, and Trusty does not support those either. The problem isn't Trusty specifically, but the layers between it and Linux: the hypervisor and SPMC. To be as specific as I can: Hafnium supports notifications, but others don't.

For now, we'll need to work around this in virtio-msg-ffa with direct messages and polling.

Thanks Andrei for explaining that.