I have a few systems with quite a bit more memory than they really need.

I'd like to use it for the buffer cache.

Why is it that setting BUFPAGES > 1536 (actually, perhaps it's a bit higher;
I know that 2048 definitely does it) causes a ptdi panic early in the
autoconfig process?

I did notice that 1536 pages (6MB) is also, oddly enough, the size of the
kernel malloc arena.  I tried doubling that, with no luck; it did get a bit
further in the boot process, but I doubt that it had anything to do with my
change.

Thor