On Fri, Jul 04, 2025 at 09:50:12AM -0300, Jason Gunthorpe wrote:

On Thu, Jul 03, 2025 at 06:48:42PM +0000, Pranjal Shrivastava wrote:

quoted

Ahh, thanks for this, that saved a lot of my time! And yes, I see some
functions in eventq.c calling the iopf_group_response which settles the
CMD_RESUME. So.. I assume these resume commands would be trapped and
*actually* executed through this or a similar path for vPRI. 

Yes, that is what Intel did. PRI has to be tracked in the kernel
because we have to ack requests eventually. If the VMM crashes the
kernel has to ack everything and try to clean up.

I see.. thanks for clarifying!

Also SMMUv3 does not support PRI today, just stall.

Ack. Thanks!

Jason

Praan