panic: PAE with 16GB ram

[Scott Long]

in2 wrote:

> On Mon, Jan 17, 2005 at 11:29:25AM +0800, in2 wrote:
> 
>>Hi,
>>I use Tyan S2882 with dual Opteron and FreeBSD 4.10-RELEASE with
>>PAE support. it works fine with 8GB and 12GB ram, but panics with
>>16GB (with the same kernel) :
> 
> the kernel panics just after booting:
> 

This is a known deficiency in the low-level startup code.  Try editing
/sys/i386/include/pmap.h and doubling or quadroupling the value of
NKPT.

Scott