Re: [RFC] #MC mess

[Frederic Weisbecker]

On Tue, Feb 18, 2020 at 10:49:04PM +0100, Peter Zijlstra wrote:
> On Tue, Feb 18, 2020 at 09:34:04PM +0100, Peter Zijlstra wrote:
> diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h
> index da0af631ded5..146332764673 100644
> --- a/include/linux/hardirq.h
> +++ b/include/linux/hardirq.h
> @@ -71,7 +71,7 @@ extern void irq_exit(void);
>  		printk_nmi_enter();				\
>  		lockdep_off();					\
>  		ftrace_nmi_enter();				\
> -		BUG_ON(in_nmi());				\
> +		BUG_ON(in_nmi() == 0xf);			\

I guess you meant:

  BUG_ON(in_nmi() == NMI_MASK);

Thanks.