[PATCH RFC 03/11] um: Use a simple time travel handler for line interrupts

[Johannes Berg]

On Fri, 2023-11-03 at 16:41 +0000, Benjamin Beichler wrote:
> This change permits interrupts on serial lines in time travel mode,
> especially in external mode. However, these interrupts are processed
> with the simple handler that does not provide any acknowledgment.
> 

Yeah... we had this discussion in the other thread.

At least in my mental model this is broken because the sender of the
event basically has to prepare the calendar for it happening, which
feels ... odd.

But I can see where you're coming from, and switching to virtio console
that does it all right might be tricky, so ... perhaps this still makes
some sense.

I'd still think we should put a warning into the code somewhere when you
actually use line interrupts though?

johannes