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Diffstat (limited to 'docs/misc/xen-command-line.markdown')
| -rw-r--r-- | docs/misc/xen-command-line.markdown | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown index eff930f7f8..92fa8fcd26 100644 --- a/docs/misc/xen-command-line.markdown +++ b/docs/misc/xen-command-line.markdown @@ -378,10 +378,33 @@ Specify the bit width of the DMA heap. Specify a list of IO ports to be excluded from dom0 access. ### dom0\_max\_vcpus -> `= <integer>` -Specify the maximum number of vcpus to give to dom0. This defaults -to the number of pcpus on the host. +Either: + +> `= <integer>`. + +The number of VCPUs to give to dom0. This number of VCPUs can be more +than the number of PCPUs on the host. The default is the number of +PCPUs. + +Or: + +> `= <min>-<max>` where `<min>` and `<max>` are integers. + +Gives dom0 a number of VCPUs equal to the number of PCPUs, but always +at least `<min>` and no more than `<max>`. Using `<min>` may give +more VCPUs than PCPUs. `<min>` or `<max>` may be omitted and the +defaults of 1 and unlimited respectively are used instead. + +For example, with `dom0_max_vcpus=4-8`: + + Number of + PCPUs | Dom0 VCPUs + 2 | 4 + 4 | 4 + 6 | 6 + 8 | 8 + 10 | 8 ### dom0\_mem > `= List of ( min:<size> | max:<size> | <size> )` |