Alan Cox <[email protected]> writes:
> On Gwe, 2005-09-02 at 16:29 +1000, Nick Piggin wrote:
> > 2/7
> > Implement atomic_cmpxchg for i386 and ppc64. Is there any
> > architecture that won't be able to implement such an operation?
>
> i386, sun4c, ....
Actually we have cmpxchg on i386 these days - we don't support
any SMP i386s so it's just done non atomically.
> Yeah quite a few. I suspect most MIPS also would have a problem in this
> area.
cmpxchg can be done with LL/SC can't it? Any MIPS should have that.
-Andi
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