Messages in this thread | | | Date | Fri, 11 Jul 2008 10:32:37 -0500 | From | Christoph Lameter <> | Subject | Re: [RFC 00/15] x86_64: Optimize percpu accesses |
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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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