Re: [PATCH v2 00/13] OMAP mailbox FIFO removal

[Dominic Rath]

On 13.06.2024 14:22, Andrew Davis wrote:
> > We looked into this some time ago, and noticed that the IRQ approach 
> > caused problems in the virtio/rpmsg code. I'd like to understand if 
> > your change was for the same reason, or something else we missed before.
>
> It is most likely the same reason. Seems despite its name, 
> rproc_vq_interrupt() cannot
> be called from an IRQ/atomic context. As the following backtrace shows, 
> that function
> calls down into functions which are not IRQ safe. So we needed to keep 
> it threaded:

Thanks for confirming. This is exactly what we've been seeing.

Regards,

Dominic