58b70f21ba
The high level `-qmp` and `-monitor` options can remain as convenience wrappers, but the low level `-mon` is completed obsoleted by the new `-object` support with 'monitor-qmp' and 'monitor-hmp' types. Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Tested-by: Peter Krempa <pkrempa@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-ID: <20260706135824.2623960-36-berrange@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Editing accident fixed in qemu-options.hx] Signed-off-by: Markus Armbruster <armbru@redhat.com>
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1.6 KiB
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40 lines
1.6 KiB
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Xen Device Emulation Backend (``xenpvh``)
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=========================================
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This machine is a little unusual compared to others as QEMU just acts
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as an IOREQ server to register/connect with Xen Hypervisor. Control of
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the VMs themselves is left to the Xen tooling.
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When TPM is enabled, this machine also creates a tpm-tis-device at a
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user input tpm base address, adds a TPM emulator and connects to a
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swtpm application running on host machine via chardev socket. This
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enables xenpvh to support TPM functionalities for a guest domain.
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More information about TPM use and installing swtpm linux application
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can be found in the :ref:`tpm-device` section.
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Example for starting swtpm on host machine:
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.. code-block:: console
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mkdir /tmp/vtpm2
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swtpm socket --tpmstate dir=/tmp/vtpm2 \
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--ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
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Sample QEMU xenpvh commands for running and connecting with Xen:
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.. code-block:: console
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qemu-system-aarch64 -xen-domid 1 \
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-chardev socket,id=libxl-cmd,path=qmp-libxl-1,server=on,wait=off \
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-object monitor-qmp,id=qmp0,chardev=libxl-cmd \
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-chardev socket,id=libxenstat-cmd,path=qmp-libxenstat-1,server=on,wait=off \
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-object monitor-qmp,id=qmp1,chardev=libxenstat-cmd \
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-xen-attach -name guest0 -vnc none -display none -nographic \
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-machine xenpvh -m 1301 \
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-chardev socket,id=chrtpm,path=tmp/vtpm2/swtpm-sock \
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-tpmdev emulator,id=tpm0,chardev=chrtpm -machine tpm-base-addr=0x0C000000
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In above QEMU command, last two lines are for connecting xenpvh QEMU to swtpm
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via chardev socket.
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