On 10/30/2015 02:05 PM, Mark Rutland wrote:
I was only asking why the interrupt was optional, and it seems per the
spec it's expected to be handed to an agent at a higher exception level.

That implies that the OS should only care about WS0, assuming that I've
understood correctly.

Yes, this my understand as well.  Apologies if I didn't get that across.

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