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[Xen-users] expected dom0 memory usage



I set GRUB_CMDLINE_XEN="dom0_mem=1024M" and put "(dom0-min-mem 1024)" 
and "(enable-dom0-ballooning no)" in xend-config.sxp.

Then in upgrading the machine's RAM, MemTotal in dom0's /proc/meminfo is 
906864 with 4GB, but only 779900 with 16GB.  Does that seem reasonable?  
Is Xen hiding part of that 1024M from dom0 to...manage the larger 
memory?

This is 4.1.4.

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