Hi Andrei,

Just a confirmation for my understanding: Having to use polling due to notification support missing is a temporary hack and mid-term you will switch to indirect messages right ?

Cheers
Bertrand

> On 19 Feb 2025, at 00:30, Andrei Homescu <ah@immunant.com> 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.
>
> Andrei Homescu

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