Messages in this thread | | | Date | Thu, 10 Jul 2008 13:55:37 -0400 | From | "H. Peter Anvin" <> | Subject | Re: [RFC 00/15] x86_64: Optimize percpu accesses |
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Jeremy Fitzhardinge wrote: > >> Its best to consistently access >> per cpu variables using the segment registers. > > It is, but initially the segment base is 0, so just using a percpu > variable does something sensible from the start with no special setup. >
That's easy enough to fix -- synthesizing a GDT entry is trivial enough -- but since it currently works, and since the offsets on 32 bits can reach the full address space anyway, there is no reason to change.
-hpa
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