xm info and dom0 ram mismatch

["Shaun R." <mailinglists@unix-scripts.com>]

A `xm info` shows the total_memory to be 8190 but when doing a free on the 
dom0 i see the total memory being 1550336.  I have rebooted the host to see 
if things would change but they didnt.  Whats weird is that i use this 
kernel and xen build on a bunch of other hosts and do not have this problem. 
Any idea of whats going on here?

[root@hostXXX ~]# xm info
total_memory           : 8190
free_memory            : 16
xen_major              : 3
xen_minor              : 3
xen_extra              : .1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p
xen_scheduler          : credit
xen_pagesize           : 4096
cc_compiler            : gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)
cc_compile_by          : root
cc_compile_date        : Mon Jan 26 12:51:07 PST 2009
xend_config_format     : 4

[root@hostXXX ~]# free
             total       used       free     shared    buffers     cached
Mem:       1550336     486620    1063716          0      19080     142860