>One possibility is that the number we set EXTMEM_SIZE to is incorrect.
>Unfortunately this machine is quite busy so it's inconvenient to experiment on
>by rebooting it frequently.  We currently have EXTMEM_SIZE set to 130432, which
>is (128MB - 640KB)/1024.  Should this perhaps be set to 130048 (ie, changing
>the 640KB to 1MB, to allow for the I/O hole in the i386 address space)?  If so,
>could this overstating of the amount of physical memory we have be the cause of
>the fatal pagefault panic?

set EXTMEM_SIZE to 130048 (for the hole, yes) and set NKPDE to 16.  that
works for me on my machines that are running >64M.

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