Re: [PATCH] atomic_long_t & include/asm-generic/atomic.h V2

[Andi Kleen]

> > How about requiring that all 64-bit archs implement atomic64_t and do:
> 
> It may be reasonable to have 64 bit arches that are not 
> capable of 64 bit atomic ops. As far as I can remember sparc was initially
> a 32 bit platform without 32 bit atomic ops.

Why? I don't think we have any crippled 64bit platforms like this.
And if somebody wants to port linux to such a hypothetical crippled
64bit platform they can do the necessary work themselves.

Or just implement 64bit atomic_t with spinlocks.

-Andi
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