110 lines
1.8 KiB
Plaintext
110 lines
1.8 KiB
Plaintext
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.TH VMX 1
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.SH NAME
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vmx \- virtual PC
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.SH SYNOPSIS
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.B vmx
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[
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.B -M
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.I mem
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]
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[
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.B -c
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.I com1
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]
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[
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.B -C
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.I com2
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]
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[
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.B -n
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.I nic
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]
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[
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.B -d
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.I blockfile
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]
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[
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.B -v
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.I vga
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]
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[
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.B -m
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.I bootmod
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]
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kernel
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[
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.I args ...
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]
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.SH DESCRIPTION
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.I Vmx
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uses Intel VT-x through
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.IR vmx (3)
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to simulate a virtual PC, running the specified kernel (which must be Multiboot compliant).
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.PP
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By default the virtual PC has 64 MB of memory.
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The amount of memory can be changed with the
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.B -M
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option,
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the argument of which is interpreted in bytes unless suffixed by
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.BR K ,
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.BR M ,
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or
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.B G
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to change the unit to kilobytes, megabytes or gigabytes, respectively.
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.PP
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.I Args
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is passed to the kernel as its command line.
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Boot modules can be specified with the
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.B -m
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argument.
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.PP
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If
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.B -v
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is specified, a graphics device is simulated.
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The argument to
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.B -v
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is either
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.IR text,
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which simulates a CGA text-mode console, or
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"\fIwidth\fLx\fIheight\fLx\fIchan\fL@\fIaddr\fR",
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which simulates a framebuffer at address \fIaddr\fR of the specified size and channel format \fIchan\fR (see
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.IR image (6)).
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.PP
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The
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.B -c
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and
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.B -C
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options specify the targets for the COM1 and COM2 devices.
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The argument consists of two fields separated by a comma, which specify the file to be used for input and output, respectively.
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Either field can be left empty.
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If there is no comma in the argument, the same value is used for both fields.
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.PP
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A
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.B -n
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option adds a network card.
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The argument to
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.B -n
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specifies a physical network device (such as
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.BR ether0 )
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to use.
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.PP
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A
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.B -d
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option adds a
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.I virtio
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block device (a hard disk)
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with the argument as a disk image.
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.SH SOURCE
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.B /sys/src/cmd/vmx
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.SH SEE ALSO
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.IR vmx (3),
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.IR cpuid (8)
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.SH BUGS
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.I Vmx
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can and will crash your kernel.
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.PP
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Currently only one core and only one VM at a time is supported.
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.SH HISTORY
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.I Vmx
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first appeared in 9front (June, 2017).
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