Re: SPARC32 SMP IRQ15 question

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On Tue, 2010-12-21 at 19:54 -0800, David Miller wrote:
> > We are thinking of switching the LEON port to use CASA (compare and
> swap), just like in the sparc64 port. Most newer leon3/4 processors
> implement CASA, even if the instruction belongs to sparc V9 and not
> V8. Would a patch like that be accepted (for the LEON port only)? This
> will not fix the SMP for general sparc32 (which really is broken), but
> it would fix it for LEON.
> 
> It should be fine as long as the patches are clean enough. 

Rather than specialising it for LEON, why not just test for CASA
availability and use it if it available?
-- 
Tactical Nuclear Kittens
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