Lines Matching +full:inter +full:- +full:cpu

1 .. zephyr:code-sample:: ivshmem-doorbell
3    :relevant-api: ivshmem
5    Use Inter-VM Shared Memory to exchange messages between two processes running on different
20 ivshmem-server needs to be available and running. The server is available in
21 Zephyr SDK or pre-built in some distributions. Otherwise, it is available in
24 ivshmem-client needs to be available as it is employed in this sample as an
25 external application. The same conditions of ivshmem-server applies to the
26 ivshmem-server, as it is also available via QEMU.
31 Building ivshmem-doorbell is as follows:
36 .. zephyr-app-commands::
37    :zephyr-app: samples/drivers/virtualization/ivshmem/doorbell
38    :host-os: unix
46 .. zephyr-app-commands::
47    :zephyr-app: samples/drivers/virtualization/ivshmem/doorbell
48    :host-os: unix
56 .. zephyr-app-commands::
57    :zephyr-app: samples/drivers/virtualization/ivshmem/doorbell
58    :host-os: unix
78 #. Run ivshmem-server. For the ivshmem-server, both number of vectors and
79    shared memory size are decided at run-time (when the server is executed).
81    decided at compile-time and run-time, respectively.
83    - (Arm64) Use vectors == 2 for the project configuration in this sample.
86      .. code-block:: console
89         $ sudo ivshmem-server -n 2
92    - (x86_64) The default shared memory size is bigger than the memory
95      .. code-block:: console
98         $ sudo ivshmem-server -n 2 -l 4096
101    - (Optional) If vectors != 2, you need to change ivshmem driver
107    .. code-block:: console
118    .. code-block:: console
120       $ west build -t run
121       -- west build: running target run
122       [0/1] To exit from QEMU enter: 'CTRL+a, x'[QEMU] CPU: cortex-a53
123       *** Booting Zephyr OS build zephyr-v3.3.0-1649-g612f49da5dee ***
124       Use write_shared_memory.sh and ivshmem-client to send a message
127    the same as specified for ivshmem-server. This is the purpose of the
131    - (Arm64) a simple "hello world" message (the script assumes the default
132      size of ivshmem-server):
134      .. code-block:: console
136         # ./write_shared_memory.sh -m "your message"
137         $ ./write_shared_memory.sh -m "hello world"
140    - (x86_64) a simple "hello world" message:
142      .. code-block:: console
144         # ./write_shared_memory.sh -m "your message" -s <size of shared memory>
145         # assumption: the user created ivshmem-server with size 4096
146         $ ./write_shared_memory.sh -m "hello world" -s 4096
149 5. Send an interrupt to the guest. Using ivshmem-client, for instance:
151    .. code-block:: console
154       $ ivshmem-client
170    received (in any of the ivshmem-vectors). Example of output for arm64:
172    .. code-block:: console
174       $ west build -t run
175       -- west build: running target run
176       [0/1] To exit from QEMU enter: 'CTRL+a, x'[QEMU] CPU: cortex-a53
177       *** Booting Zephyr OS build zephyr-v3.3.0-1649-g612f49da5dee ***
178       Use write_shared_memory.sh and ivshmem-client to send a message
197 with. This is straight-forward if you are writing an application and uses