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author | David Vrabel <david.vrabel@citrix.com> | 2012-03-22 10:23:30 +0000 |
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committer | David Vrabel <david.vrabel@citrix.com> | 2012-03-22 10:23:30 +0000 |
commit | e2e7b20674341c4b2ead9020aff1ebb91d6656c3 (patch) | |
tree | ea374080d0be1aae7e4441678a0b734c11a54252 | |
parent | 5823a8d7bfebf2519b8ed5b979efd24b31320137 (diff) | |
download | xen-e2e7b20674341c4b2ead9020aff1ebb91d6656c3.tar.gz xen-e2e7b20674341c4b2ead9020aff1ebb91d6656c3.tar.bz2 xen-e2e7b20674341c4b2ead9020aff1ebb91d6656c3.zip |
docs: improve documentation for the the dom0_mem command line option
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Committed-by: Keir Fraser <keir@xen.org>
-rw-r--r-- | docs/misc/xen-command-line.markdown | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown index beb84625fa..c697d68ed5 100644 --- a/docs/misc/xen-command-line.markdown +++ b/docs/misc/xen-command-line.markdown @@ -8,7 +8,7 @@ This document coveres the command line options which the Xen Hypervisor. Most parameters take the form `option=value`. Different options on the command line should be space delimited. -### Boolean +### Boolean (`<boolean>`) All boolean option may be explicitly enabled using a `value` of > `yes`, `on`, `true`, `enable` or `1` @@ -29,11 +29,11 @@ Disable x2apic support (if present) Enable synchronous console mode > `sync_console` -### Integer +### Integer (`<integer>`) An integer parameter will default to decimal and may be prefixed with a `-` for negative numbers. Alternativly, a hexidecimal number may be used by prefixing the number with `0x`, or an octal number may be used if a leading `0` is present. -### Size +### Size (`<size>`) A size parameter may be any integer, with a size suffix @@ -96,7 +96,7 @@ Increase the verbosity of the APIC code from the default value. ### ats ### availmem ### badpage -> `= List of [ <integer> | <ingeter>-<integer> ]` +> `= List of [ <integer> | <integer>-<integer> ]` Specify that certain pages, or certain ranges of pages contain bad bytes and should not be used. For example, if your memory tester says that byte `0x12345678` is bad, you would place `badpage=0x12345` on Xen's command line. @@ -219,13 +219,22 @@ Specifiy the maximum number of vcpus to give to dom0. This defaults to the numb Specify the total size for dom0. ### dom0\_mem (x86) -> `= List of ( min:<value> | max: <value> | <value> )` +> `= List of ( min:<size> | max:<size> | <size> )` -each `<value>` is a size parameter. If the size is positive, it represents an absolute value. If the size is negative, the size specified is subtracted from the total available memory. +Set the amount of memory for the initial domain (dom0). If a size is +positive, it represents an absolute value. If a size is negative, the +size specified is subtracted from the total available memory. -* `min:<value>` specifies the minimum amount of memory allocated to dom0. -* `max:<value>` specifies the maximum amount of memory allocated to dom0. -* `<value>` specified the exact amount of memory allocated to dom0. +* `min:<size>` specifies the minimum amount of memory allocated to dom0. +* `max:<size>` specifies the maximum amount of memory allocated to dom0. +* `<size>` specified the exact amount of memory allocated to dom0. + +`max:<size>` also sets the maximum reservation (the maximum amount of +memory dom0 can balloon up to). If this is omitted then the maximum +reservation is unlimited. + +For example, to set dom0's memory to 512 MB but no more than 1 GB use +`dom0_mem=512M,max:1G`. ### dom0\_shadow ### dom0\_vcpus\_pin |