40 vs 44 bit memory addressing HP DL580/980

[John Baldwin]

On Sunday, November 21, 2010 8:05:26 pm Sean Bruno wrote:
> Looks like these HP boxes have the capability to do 44 bit memory
> addressing if configured to do so from the BIOS.
> 
> Is anyone interested in any data from that setting?

Does it boot ok? :)  The MTRR code should handle that (there is a CPUID
field that tells the OS how many bits are significant).  Not sure if there
are any places in the pmap that assume 40 bits, but a test boot is certainly
worth trying.

-- 
John Baldwin