Re: [PATCH 0/7] xen/events: bug fixes and some diagnostic aids

[Julien Grall]

On 08/02/2021 14:20, Julien Grall wrote:
> > > > I believe this will be the case before our "lateeoi" handling is
> > > > becoming active (more precise: when our IRQ handler is returning to
> > > > handle_fasteoi_irq()), resulting in the possibility of the same race we
> > > > are experiencing now.
> > >
> > > I am a bit confused what you mean by "lateeoi" handling is becoming 
> > > active. Can you clarify?
> >
> > See above: the next call of the handler should be allowed only after
> > xen_irq_lateeoi() for the IRQ has been called.
> >
> > If the handler is being called earlier we have the race resulting
> > in the WARN() splats.
>
> I feel it is dislike to understand race with just words. Can you provide

Sorry I meant difficult rather than dislike.

Cheers,

--
Julien Grall