Ubuntu 32-bit, 32-bit PAE, 64-bit Kernel Benchmarks

Ubuntu 32-bit, 32-bit PAE, 64-bit Kernel Benchmarks

Post by Yuhong Ba » Tue, 02 Mar 2010 10:40:02



BTW, Linus posted this about HIGHMEM and PAE:
http://www.yqcomputer.com/
A few corrections though. HIMEM.SYS was never about memory windowing, EMS was.
The way the 286 could access 16MB of memory was plain old segmentation, just in a different way than EMS did.
And the main issue with PAE in Windows was driver issues, I think, which is why when they enabled PAE to get the NX bit, they limited physical address space to 32-bit on client versions of Windows.

Yuhong Bao

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