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docs: clean-up the xenpvh documentation

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I noticed the code blocks where not rendering properly so thought I'd
better fix things up. So:

  - Use better title for the machine type
  - Explain why Xen is a little different
  - Add a proper anchor to the tpm-device link
  - add newline so code block properly renders
  - add some indentation to make continuation clearer

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20231207130623.360473-1-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2023-12-07 13:06:23 +00:00 • committed by Stefan Hajnoczi
parent 755ae3811f
commit 06ecb6ac19
2 changed files with 24 additions and 17 deletions
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2
docs/specs/tpm.rst
View file

@ -1,3 +1,5 @@
.. _tpm-device:
=============== ===============
QEMU TPM Device QEMU TPM Device
=============== ===============

21
docs/system/arm/xenpvh.rst
View file

@ -1,16 +1,20 @@
XENPVH (``xenpvh``) Xen Device Emulation Backend (``xenpvh``)
========================================= =========================================
This machine creates a IOREQ server to register/connect with Xen Hypervisor.
When TPM is enabled, this machine also creates a tpm-tis-device at a user input This machine is a little unusual compared to others as QEMU just acts
tpm base address, adds a TPM emulator and connects to a swtpm application as an IOREQ server to register/connect with Xen Hypervisor. Control of
running on host machine via chardev socket. This enables xenpvh to support TPM the VMs themselves is left to the Xen tooling.
functionalities for a guest domain.
More information about TPM use and installing swtpm linux application can be When TPM is enabled, this machine also creates a tpm-tis-device at a
found at: docs/specs/tpm.rst. user input tpm base address, adds a TPM emulator and connects to a
swtpm application running on host machine via chardev socket. This
enables xenpvh to support TPM functionalities for a guest domain.
More information about TPM use and installing swtpm linux application
can be found in the :ref:`tpm-device` section.
Example for starting swtpm on host machine: Example for starting swtpm on host machine:
.. code-block:: console .. code-block:: console
mkdir /tmp/vtpm2 mkdir /tmp/vtpm2
@ -18,6 +22,7 @@ Example for starting swtpm on host machine:
--ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock & --ctrl type=unixio,path=/tmp/vtpm2/swtpm-sock &
Sample QEMU xenpvh commands for running and connecting with Xen: Sample QEMU xenpvh commands for running and connecting with Xen:
.. code-block:: console .. code-block:: console
qemu-system-aarch64 -xen-domid 1 \ qemu-system-aarch64 -xen-domid 1 \