[PATCH/RFC] s390/kernel: use stnsm instead of stosm
At least on z196 stnsm is faster than stosm. Signed-off-by: Christian Borntraeger --- arch/s390/include/asm/irqflags.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/include/asm/irqflags.h b/arch/s390/include/asm/irqflags.h index 37b9091..16aa0c7 100644 --- a/arch/s390/include/asm/irqflags.h +++ b/arch/s390/include/asm/irqflags.h @@ -36,7 +36,7 @@ static inline notrace void __arch_local_irq_ssm(unsigned long flags) static inline notrace unsigned long arch_local_save_flags(void) { - return __arch_local_irq_stosm(0x00); + return __arch_local_irq_stnsm(0xff); } static inline notrace unsigned long arch_local_irq_save(void) -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH/RFC] s390/kernel: use stnsm instead of stosm
Paolo, sorry, should have only go to Martin and Heiko. Nothing to worry about from your side. :-) Am 16.12.2014 um 10:30 schrieb Christian Borntraeger: > At least on z196 stnsm is faster than stosm. > > Signed-off-by: Christian Borntraeger > --- > arch/s390/include/asm/irqflags.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/s390/include/asm/irqflags.h > b/arch/s390/include/asm/irqflags.h > index 37b9091..16aa0c7 100644 > --- a/arch/s390/include/asm/irqflags.h > +++ b/arch/s390/include/asm/irqflags.h > @@ -36,7 +36,7 @@ static inline notrace void __arch_local_irq_ssm(unsigned > long flags) > > static inline notrace unsigned long arch_local_save_flags(void) > { > - return __arch_local_irq_stosm(0x00); > + return __arch_local_irq_stnsm(0xff); > } > > static inline notrace unsigned long arch_local_irq_save(void) > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH/RFC] s390/kernel: use stnsm instead of stosm
On 16/12/2014 10:31, Christian Borntraeger wrote: > Paolo, > > > sorry, should have only go to Martin and Heiko. > Nothing to worry about from your side. :-) No problem, it's always fun to learn new s390 instructions. :) Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html