Messages in this thread | | | Date | Fri, 16 Nov 2007 07:45:16 -0800 | From | "H. Peter Anvin" <> | Subject | Re: Why preallocate pmd in x86 32-bit PAE? |
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Andi Kleen wrote: >> I think Jeremy's question was due to trying to reduce the 32/64-bit >> differences. Performance-wise, it might add a small amount to user >> setup time (a typical 32-bit process will need all four, for the main >> binary, libraries, stack and kernel, respectively) > > With the new top down mmap layout and standard 3:1 split it should typically > only need two. >
Well, three with the kernel.
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