As part of the Bootup sequence, I see create_pagetables allocate only 30 Pages for Page Table entries in non-PAE mode and 120 pages in PAE mode. Does this mean that all the kernel mode entities get only 4 * 30 * 1024 * 1024 = 120 MB worth of Address Space ? Can I tune the kernel virtual address space by just changing the "NKPT" define in pmap.h ?
Also, I heard that the BSD kernel(atleast from 5.1 onward) itself is pre-emptible and none of the kernel threads have a cpu affinity. How do I change the behaviour to make the kernel non-preemptible and tie kernel-threads to a particular CPU ?
Sridhar.
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Under Linux, all kernel threads share the same "Kernel" Virtual Address Space. Is it the same under freeBSD ? If it is not, then what sort of Stuff gets put into the "Kernel" Virtual Address Space?
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