Re: [PATCH 4/5] xen/events: unmask a fifo event channel only if it was masked

[Jan Beulich <jbeulich@xxxxxxxx>]

On 22.10.2020 09:42, Juergen Gross wrote:
> --- a/drivers/xen/events/events_fifo.c
> +++ b/drivers/xen/events/events_fifo.c
> @@ -236,6 +236,9 @@ static bool clear_masked_cond(volatile event_word_t *word)
>  
>       w = *word;
>  
> +     if (!(w & (1 << EVTCHN_FIFO_MASKED)))
> +             return true;

Maybe better move this ...

>       do {
>               if (w & (1 << EVTCHN_FIFO_PENDING))
>                       return false;
> 

... into the loop, above this check?

Jan