Just to understand, ARM64 has SMP and ARM32 does not? &, OpenBSD design fine with ARM's weak mem coherency?

[Tinker]

Hi misc,

I just wanted to understand what's going on with SMP on ARM -
Did I get it right, that ARM64 has SMP (as of the patches this week), 
but ARM32 does not have SMP and will not get it too?

What was the reason for not implementing SMP on ARM32? (I only need SMP 
on ARM64 so just wanted to ask as to understand what's going on.)


Also, is there any confrontation between OpenBSD's design and ARM's weak 
memory coherency model? (In contrast with AMD64/I386/SPARC64 which all 
have a strong model.)

Thanks!
Tinker