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Re: Linux page sizes (memory)
On Sat, 17 Apr 1999, Udi Finkelstein wrote:
>> I seem to remember 4k pages set at kernel boot time to save space or
>>something like that.
>You are right.
>
>There *is*, however, a newer mode (available in pentium's and up) that use
>either 2M or 4M page size, which can reduce the page size table, and is
>probably the only way to get 64GB on intel Xeon chips (Does Pentium II also
>supports 64GB physical memory? I think so)..
Just a sec, there is some trick about a multiplier in there, but I do not
remember what is does. Is this not something to do with the page size ?
>The interesting story is that this mode was documented in the infamous
>"Appendix H" of the Pentium Reference manual, which was only available after
>you sign an NDA (Non-Disclusure Agreement) with Intel (probably signed with a
>drop of your blood inside a pentagram).
No, a drop of blood inside a microsoft windows NT logo.
Peter