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4 On Linux hosts, a shared memory device is available. The basic syntax
18 If desired, interrupts can be sent between guest VMs accessing the same
20 server and using a chardev socket to connect to it. The code for the
22 syntax when using the shared memory server is:
26 # First start the ivshmem server once and for all
33 When using the server, the guest will be assigned a VM ID (>=0) that
34 allows guests using the same server to communicate via interrupts.
41 With device property ``master=on``, the guest will copy the shared
42 memory on migration to the destination host. With ``master=off``, the
43 guest will not be able to migrate with the device attached. In the
44 latter case, the device should be detached and then reattached after
45 migration using the PCI hotplug support.
47 At most one of the devices sharing the same memory can be master. The
48 master must complete migration before you plug back the other devices.
53 Instead of specifying the <shm size> using POSIX shm, you may specify a
61 ivshmem-server also supports hugepages mount points with the ``-m``