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

[Christoph Lameter]

H. Peter Anvin wrote:

> And how much is that, especially on *small* systems?

i386?

i386 uses 4K mappings. There are just a few cpus supported, there is scarcity of ZONE_NORMAL memory so the per cpu areas really cannot get that big. See the cpu_alloc patchsets for i386.



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