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42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
This kernel module implements a basic interface to the IVSHMEM device for
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LookingGlass when using LookingGlass in VM->VM mode.
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## Compiling
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Make sure you have your kernel headers installed first, on Debian/Ubuntu use
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the following command.
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apt-get install linux-headers-$(uname -r)
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Then simply run `make` and you're done.
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## Usage
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This module requires the `uio` module to be loaded first, loading it is as
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simple as:
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modprobe uio
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insmod kvmfr.ko
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This will create the `/dev/uio0` node that represents the KVMFR interface.
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To use the interface you need permission to access it by either creating a
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udev rule to ensure your user can read and write to it, or simply change it's
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ownership manually, ie:
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sudo chown user:user /dev/uid0
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Usage with looking glass is simple, but you do need to speecify both the path
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and the size as LookingGlass can not determine the size by itself at this time.
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./looking-glass-client -f /dev/uio0 -L 16
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## Note
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This module is not strictly required, it is possible to access the device
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via the /sys interface directly, for example:
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./looking-glass-client -f /sys/devices/pci0000:00/0000:00:03.0/resource2_wc
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Obviously adjusting the PCI device IDs as required. However while this is
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possible it is not recommended as access to the shared memory is much slower.
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