Re: [patch 00/41] cpu alloc / cpu ops v3: Optimize per cpu access

[Andi Kleen <andi@xxxxxxxxxxxxxx>]

Christoph Lameter <clameter@xxxxxxx> writes:

> The problem is that offsets relative to %gs or %fs are limited by the 
> small memory model that is chosen.

Actually they are not. If you really want you can do 
movabs $64bit,%reg ; op ...,%gs:(%reg) 
It's just not very efficient compared to small (or rather kernel) model
and also older binutils didn't support large model.

-Andi
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