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qemu-options.hx: improve -m description 

Add memory hotplug options to the command-line format. Also,
add a complete command-line example and improve description.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Paulo Vital <paulo.vital@profitbricks.com>
This commit is contained in:
Luiz Capitulino 2015-02-26 14:35:45 -05:00
parent 6adfdc5a6a
commit 9fcc079486
1 changed files with 17 additions and 5 deletions
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22
qemu-options.hx
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@ -237,12 +237,24 @@ DEF("m", HAS_ARG, QEMU_OPTION_m,
"NOTE: Some architectures might enforce a specific granularity\n",
QEMU_ARCH_ALL)
STEXI
@item -m [size=]@var{megs}
@item -m [size=]@var{megs}[,slots=n,maxmem=size]
@findex -m
Set virtual RAM size to @var{megs} megabytes. Default is 128 MiB. Optionally,
a suffix of ``M'' or ``G'' can be used to signify a value in megabytes or
gigabytes respectively. Optional pair @var{slots}, @var{maxmem} could be used
to set amount of hotluggable memory slots and possible maximum amount of memory.
Sets guest startup RAM size to @var{megs} megabytes. Default is 128 MiB.
Optionally, a suffix of ``M'' or ``G'' can be used to signify a value in
megabytes or gigabytes respectively. Optional pair @var{slots}, @var{maxmem}
could be used to set amount of hotpluggable memory slots and maximum amount of
memory. Note that @var{maxmem} must be aligned to the page size.
For example, the following command-line sets the guest startup RAM size to
1GB, creates 3 slots to hotplug additional memory and sets the maximum
memory the guest can reach to 4GB:
@example
qemu-system-x86_64 -m 1G,slots=3,maxmem=4G
@end example
If @var{slots} and @var{maxmem} are not specified, memory hotplug won't
be enabled and the guest startup RAM will never increase.
ETEXI
DEF("mem-path", HAS_ARG, QEMU_OPTION_mempath,