On Wed, 24 Feb 2016, Huacai Chen wrote: > This patch introduce a config option, CONFIG_LOONGSON3_ENHANCEMENT, to > enable those enhancements which cannot be probed at run time. If you > want a generic kernel to run on all Loongson 3 machines, please say 'N' > here. If you want a high-performance kernel to run on new Loongson 3 > machines only, please say 'Y' here. [...] > diff --git a/arch/mips/include/asm/irqflags.h b/arch/mips/include/asm/irqflags.h > index 65c351e..9d3610b 100644 > --- a/arch/mips/include/asm/irqflags.h > +++ b/arch/mips/include/asm/irqflags.h > @@ -41,7 +41,12 @@ static inline unsigned long arch_local_irq_save(void) > " .set push \n" > " .set reorder \n" > " .set noat \n" > +#if defined(CONFIG_CPU_LOONGSON3) > + " mfc0 %[flags], $12 \n" > + " di \n" > +#else > " di %[flags] \n" > +#endif > " andi %[flags], 1 \n" > " " __stringify(__irq_disable_hazard) " \n" > " .set pop \n" This part does not appear related to CONFIG_LOONGSON3_ENHANCEMENT -- please either fold it into one of the other changes in the set, if there's one it really belongs to, or make it an entirely separate change otherwise. Maciej
