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xm info | grep xen_caps
It should report a 64-bit Xen hypervisor, such as xen-3.0-x86_64.
2.3 Managing Domain 0 Memory
When the host is set up, a percentage of system memory is reserved for the hypervisor,
and all remaining memory is automatically allocated to Domain0.
A better solution is to set a minimum and maximum amount of memory for domain 0,
so the memory can be allocated appropriately to the hypervisor. An adequate maximum
amount would be 20 percent of the total system memory up to 2 GB. An appropriate
minimum amount would at least be 512 MB.
2.3.1 Setting a Maximum Amount of
Memory
1 Determine the amount of memory to set for domain 0.
2 At Domain0, type xm list to view the currently allocated memory.
3 Run YaST > Boot Loader.
4 Select the Xen section.
5 In Additional Xen Hypervisor Parameters, add dom0_mem= mem_amount
where mem_amount is the maximum amount of memory to allocate to Do-
main0. Add K, M, or G, to specify the size, for example, dom0_mem=768M.
6 Restart the computer to apply the changes.
Setting Up a Virtual Machine Host
11
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