[PATCH] powerpc/64: pseudo-NMI/SMP watchdog

[Balbir Singh]

> @@ -1295,7 +1295,7 @@ masked_##_H##interrupt:					\
>  	lis	r10,0x7fff;				\
>  	ori	r10,r10,0xffff;				\
>  	mtspr	SPRN_DEC,r10;				\
> -	b	2f;					\
> +	b	masked_decrementer_##_H##interrupt;	\
>  1:	cmpwi	r10,PACA_IRQ_DBELL;			\
>  	beq	2f;					\
>  	cmpwi	r10,PACA_IRQ_HMI;			\
> @@ -1312,6 +1312,16 @@ masked_##_H##interrupt:					\
>  	##_H##rfid;					\
>  	b	.
>  
> +#define MASKED_NMI(_H)					\
> +masked_decrementer_##_H##interrupt:			\
> +	std	r12,PACA_EXGEN+EX_R12(r13);		\
> +	GET_SCRATCH0(r10);				\
> +	std	r10,PACA_EXGEN+EX_R13(r13);		\
> +	EXCEPTION_PROLOG_PSERIES_1(soft_nmi_common, _H)
> +

This bit a little confusing, we are already handling an exception
do a masked_##_H##interrupt check and we redo the exception prolog?

Balbir Singh