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Re: i386 PAE support (Patches)

On Mon, Dec 21, 2009 at 10:17:12PM +0100, Jean-Yves Migeon wrote:
> BTW, given that all mainstream x86 CPUs support PAE today, shouldn't
> PAE support be made more dynamic, by checking if feature is present
> (through CPUID for example), and adapt accordingly?

That would mean switching the pmap at run time or using a more dynamic
pmap, both could cost performance. Using PAE really only makes sense if
high memory is present or NX on AMD cpus is desired.


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