Re: [GIT RFC] percpu: use dynamic percpu allocator as the defaultpercpu allocator

[David Miller]

From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Date: Wed, 1 Apr 2009 10:32:57 +0200

> The code sequence with @GOT:
> 
> 	larl	%r12,_GLOBAL_OFFSET_TABLE_
> 	lg	%r1,symbol@GOT(%r12)
> 
> is equivalent to:
> 
> 	larl	%r1,symbol@GOTENT
> 	lg	%r1,0(%r1)
> 
> The advantage of the second code sequence is that it need a single
> register and the size of the GOT is not limited to 4K as in the first
> example (the offset in an RX format instruction is limited to 12 bits -
> but that is probably something you don't want to know ;-).

If practical I think you guys should just force all of the module
address space below 4GB virtually, as we do on sparc64.  It's a good
way to avoid all of these problems.
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