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

[Christoph Lameter]

H. Peter Anvin wrote:
> Christoph Lameter wrote:
>> 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.
>>
> 
> No, not i386.  x86-64.

x86_64 are small systems? For 64 bit use one would expect 4GB of memory.
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