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Add a new machine xenpvh which creates a IOREQ server to register/connect with
Xen Hypervisor.
Optional: When CONFIG_TPM is enabled, it also creates a tpm-tis-device, adds a
TPM emulator and connects to swtpm running on host machine via chardev socket
and support TPM functionalities for a guest domain.
Extra command line for aarch64 xenpvh QEMU to connect to swtpm:
-chardev socket,id=chrtpm,path=/tmp/myvtpm2/swtpm-sock \
-tpmdev emulator,id=tpm0,chardev=chrtpm \
-machine tpm-base-addr=0x0c000000 \
swtpm implements a TPM software emulator(TPM 1.2 & TPM 2) built on libtpms and
provides access to TPM functionality over socket, chardev and CUSE interface.
Github repo: https://github.com/stefanberger/swtpm
Example for starting swtpm on host machine:
mkdir /tmp/vtpm2
swtpm socket --tpmstate dir=/tmp/vtpm2 \
--ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
35 lines
1.4 KiB
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35 lines
1.4 KiB
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XENPVH (``xenpvh``)
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=========================================
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This machine creates a IOREQ server to register/connect with Xen Hypervisor.
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When TPM is enabled, this machine also creates a tpm-tis-device at a user input
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tpm base address, adds a TPM emulator and connects to a swtpm application
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running on host machine via chardev socket. This enables xenpvh to support TPM
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functionalities for a guest domain.
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More information about TPM use and installing swtpm linux application can be
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found at: docs/specs/tpm.rst.
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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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-mon chardev=libxl-cmd,mode=control \
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-chardev socket,id=libxenstat-cmd,path=qmp-libxenstat-1,server=on,wait=off \
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-mon chardev=libxenstat-cmd,mode=control \
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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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