[PATCH v4 02/12] powerpc: move set_soft_enabled() and rename

[Madhavan Srinivasan]

On Tuesday 20 December 2016 02:33 PM, Balbir Singh wrote:
>
> On 19/12/16 19:06, Madhavan Srinivasan wrote:
>> Move set_soft_enabled() from powerpc/kernel/irq.c to
>> asm/hw_irq.c, to force updates to paca-soft_enabled
>> done via these access function. Add "memory" clobber
>> to hint compiler since paca->soft_enabled memory is the target
>> here
>> +static inline notrace void soft_enabled_set(unsigned long enable)
>> +{
>> +	__asm__ __volatile__("stb %0,%1(13)"
>> +	: : "r" (enable), "i" (offsetof(struct paca_struct, soft_enabled))
>> +	: "memory");
>> +}
>> +
> Can't we just rewrite this in "C"?
>
> local_paca->soft_enabled = enable

Yes we did discussed this  and parked it to handle in the follow on 
patchset.
Nick did suggest something of this sort,

__asm__ __volatile__("stb %1,%0" : "=m" (local_paca->soft_enabled) : "r" 
(enable));



> Balbir Singh.
>