Re: [RFC 00/15] x86_64: Optimize percpu accesses

[Christoph Lameter]

Jeremy Fitzhardinge wrote:

> Percpu on i386 hasn't been a point of discussion.  It works fine, and
> has been working fine for a long time.  The same mechanism would work
> fine on x86-64.  Its only "issue" is that it doesn't support the broken
> gcc abi for stack-protector.

Well that is one thing and then the scaling issues, and the support of the new cpu allocator, new arch independent cpu operations etc.

> The problem is all zero-based percpu on x86-64.

The zero based stuff will enable a lot of things. Please have a look at the cpu_alloc patchsets.



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