Re: SPARC32 SMP IRQ15 question

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On Wed, 2010-12-22 at 11:53 -0800, David Miller wrote:
> > Rather than specialising it for LEON, why not just test for CASA
> > availability and use it if it available?
> 
> Run time detection of this is going to really be terrible.
> 
> Lots of cmpxchg() uses are inline, and we'll have to implement
> it out-of-line and patch the call instructions dynamically.
> 
> LEON is the only chip that can do the instruction and we already
> do a special LEON specific build. 

Inlines do save a lot of time, so I guess you're right there's no point.
But I think changing the way IRQ15/IRQ14 interrupt works could be an
extra bonus. 
-- 
Tactical Nuclear Kittens
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