Re: [PATCH v2 3/5] xen/events: only register debug interrupt for 2-level events

[Jürgen Groß]

On 22.10.20 12:35, Jan Beulich wrote:

On 22.10.2020 11:49, Juergen Gross wrote:

@@ -2080,10 +2080,12 @@ void __init xen_init_IRQ(void)
        int ret = -EINVAL;
        evtchn_port_t evtchn;

- if (fifo_events)

+       if (xen_fifo_events)
                ret = xen_evtchn_fifo_init();
-       if (ret < 0)
+       if (ret < 0) {
                xen_evtchn_2l_init();
+               xen_fifo_events = false;
+       }

Another note: While it may not matter right here, maybe better
first set the variable and the call the function?

I don't think this is really important, TBH.

This code is executed before other cpus are up and we'd have major
other problems in case the sequence would really matter here.


Juergen