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doc: update draft 3.1 published docs to include changes on master

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Signed-off-by: Amy Reyes <amy.reyes@intel.com>
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Amy Reyes 2022-09-21 10:38:56 -07:00
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2
doc/developer-guides/hld/hld-splitlock.rst
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@ -131,6 +131,6 @@ Disable Split-Locked Access Detection
If the CPU supports Split-locked Access detection, the ACRN hypervisor
uses it to prevent any VM running with potential system performance
impacting split-locked instructions. This detection can be disabled
(by changing the :option:`hv.FEATURES.ENFORCE_TURNOFF_AC` setting in
(by deselecting the :term:`Enable split lock detection` option in
the ACRN Configurator tool) for customers not
caring about system performance.

27
doc/developer-guides/hld/hv-hypercall.rst
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@ -9,7 +9,30 @@ is from the hypervisor to the guest VM. The hypervisor supports
hypercall APIs for VM management, I/O request distribution, interrupt injection,
PCI assignment, guest memory mapping, power management, and secure world switch.
There are some restrictions for hypercall and upcall:
The application binary interface (ABI) of ACRN hypercalls is defined as follows.
- A guest VM executes the ``vmcall`` instruction to trigger a hypercall.
- Input parameters of a hypercall include:
- A hypercall ID in register ``R8``, which specifies the kind of service
requested by the guest VM.
- The first parameter in register ``RDI`` and the second in register
``RSI``. The semantics of those two parameters vary among different kinds of
hypercalls and are defined in the :ref:`hv-hypercall-ref`. For hypercalls
requesting operations on a specific VM, the first parameter is typically the
ID of that VM.
- The register ``RAX`` contains the return value of the hypercall after a guest
VM executes the ``vmcall`` instruction, unless the ``vmcall`` instruction
triggers an exception. Other general-purpose registers are not modified by a
hypercall.
- If a hypercall parameter is defined as a pointer to a data structure,
fields in that structure can be either input, output, or inout.
There are some restrictions for hypercalls and upcalls:
#. Only specific VMs (the Service VM and the VM with Trusty enabled)
can invoke hypercalls. A VM that cannot invoke hypercalls gets ``#UD``
@ -35,6 +58,8 @@ Service VM registers the IRQ handler for vector (0xF3) and notifies the I/O
emulation module in the Service VM once the IRQ is triggered. View the detailed
upcall process at :ref:`ipi-management`.
.. _hv-hypercall-ref:
Hypercall APIs Reference
************************

242
doc/getting-started/getting-started.rst
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@ -53,21 +53,22 @@ Before you begin, make sure your machines have the following prerequisites:
- USB keyboard and mouse
- Monitor
- Ethernet cable and Internet access
- A second USB disk with minimum 1GB capacity to copy files between the
development computer and target system (this guide offers steps for
copying via USB disk, but you can use another method, such as using ``scp``
to copy files over the local network, if you prefer)
- A second USB disk with minimum 16GB capacity. Format your USB disk with a
file system that supports files greater than 4GB: extFAT or NTFS, but not
FAT32. We'll use this USB disk to copy files between the development
computer and target system. Instead of a USB drive, you can copy files
between systems over the network using the ``scp`` command.
- Local storage device (NVMe or SATA drive, for example). We recommend having
40GB or more of free space.
.. note::
If you're working behind a corporate firewall, you'll likely need to
configure a proxy for accessing the internet, if you haven't done so already.
configure a proxy for accessing the Internet, if you haven't done so already.
While some tools use the environment variables ``http_proxy`` and ``https_proxy`` to
get their proxy settings, some use their own configuration files, most
notably ``apt`` and ``git``. If a proxy is needed and it's not configured,
commands that access the internet may time out and you may see errors such
as, "unable to access ..." or "couldn't resolve host ...".
commands that access the Internet may time out and you may see errors such
as "unable to access ..." or "couldn't resolve host ...".
.. _gsg-dev-computer:
@ -110,7 +111,7 @@ To set up the ACRN build environment on the development computer:
.. code-block:: bash
mkdir ~/acrn-work
mkdir -p ~/acrn-work
#. Install the necessary ACRN build tools:
@ -131,18 +132,18 @@ To set up the ACRN build environment on the development computer:
cd ~/acrn-work
git clone https://github.com/projectacrn/acrn-hypervisor.git
cd acrn-hypervisor
git checkout v3.0
git checkout v3.1
cd ..
git clone https://github.com/projectacrn/acrn-kernel.git
cd acrn-kernel
git checkout acrn-v3.0
git checkout acrn-v3.1
#. Install Python package dependencies:
.. code-block:: bash
sudo pip3 install "elementpath==2.5.0" lxml "xmlschema==1.9.2" defusedxml tqdm
sudo pip3 install "elementpath==2.5.0" lxml "xmlschema==1.9.2" defusedxml tqdm requests
#. Build and install the iASL compiler/disassembler used for advanced power management,
device discovery, and configuration (ACPI) within the host OS:
@ -202,7 +203,7 @@ Install OS on the Target
The target system needs Ubuntu Desktop 20.04 LTS to run the Board Inspector
tool. You can read the full instructions to download, create a bootable USB
stick, and `Install Ubuntu desktop
drive, and `Install Ubuntu desktop
<https://ubuntu.com/tutorials/install-ubuntu-desktop#1-overview>`_ on the Ubuntu
site. We'll provide a summary here:
@ -244,6 +245,22 @@ To install Ubuntu 20.04:
sudo apt update
sudo apt upgrade -y
#. It's convenient to use the network to transfer files between the development
computer and target system, so we recommend installing the openssh-server
package on the target system::
sudo apt install -y openssh-server
This command will install and start the ssh-server service on the target
system. We'll need to know the target system's IP address to make a
connection from the development computer, so find it now with this command::
hostname -I | cut -d ' ' -f 1
#. Make a working directory on the target system that we'll use later::
mkdir -p ~/acrn-work
Configure Target BIOS Settings
===============================
@ -262,8 +279,8 @@ Configure Target BIOS Settings
provides additional support for managing I/O virtualization).
* Disable **Secure Boot**. This setting simplifies the steps for this example.
The names and locations of the BIOS settings differ depending on the target
hardware and BIOS version.
The names and locations of the BIOS settings depend on the target
hardware and BIOS vendor and version.
Generate a Board Configuration File
=========================================
@ -288,47 +305,56 @@ Generate a Board Configuration File
directory.
#. Copy the Board Inspector Debian package from the development computer to the
target system via USB disk as follows:
target system.
a. On the development computer, insert the USB disk that you intend to use to
copy files.
Option 1: Use ``scp``
Use the ``scp`` command to copy the Debian package from your development
computer to the ``~/acrn-work`` working directory we created on the target
system. Replace ``10.0.0.200`` with the target system's IP address you found earlier::
#. Ensure that there is only one USB disk inserted by running the following
command:
scp ~/acrn-work/acrn-hypervisor/build/acrn-board-inspector*.deb acrn@10.0.0.200:~/acrn-work
.. code-block:: bash
Option 2: Use a USB disk
a. On the development computer, insert the USB disk that you intend to use to
copy files.
ls /media/$USER
#. Ensure that there is only one USB disk inserted by running the following
command:
Confirm that only one disk name appears. You'll use that disk name in the following steps.
.. code-block:: bash
#. Copy the Board Inspector Debian package to the USB disk:
ls /media/$USER
.. code-block:: bash
Confirm that only one disk name appears. You'll use that disk name in the following steps.
cd ~/acrn-work/
disk="/media/$USER/"$(ls /media/$USER)
cp -r acrn-hypervisor/build/acrn-board-inspector*.deb "$disk"/
sync && sudo umount "$disk"
#. Copy the Board Inspector Debian package to the USB disk:
#. Remove the USB stick from the development computer and insert it into the target system.
.. code-block:: bash
#. Copy the Board Inspector Debian package from the USB disk to the target:
cd ~/acrn-work/
disk="/media/$USER/"$(ls /media/$USER)
cp -r acrn-hypervisor/build/acrn-board-inspector*.deb "$disk"/
sync && sudo umount "$disk"
.. code-block:: bash
#. Remove the USB disk from the development computer and insert it into the target system.
mkdir -p ~/acrn-work
disk="/media/$USER/"$(ls /media/$USER)
cp -r "$disk"/acrn-board-inspector*.deb ~/acrn-work
#. Copy the Board Inspector Debian package from the USB disk to the target:
#. Install the Board Inspector Debian package on the target system:
.. code-block:: bash
mkdir -p ~/acrn-work
disk="/media/$USER/"$(ls /media/$USER)
cp -r "$disk"/acrn-board-inspector*.deb ~/acrn-work
#. Now that we've got the Board Inspector Debian package on the target system, install it there:
.. code-block:: bash
cd ~/acrn-work
sudo pip3 install tqdm
sudo apt install -y ./acrn-board-inspector*.deb
#. Reboot the system:
#. Reboot the target system:
.. code-block:: bash
@ -356,28 +382,37 @@ Generate a Board Configuration File
ls ./my_board.xml
#. Copy ``my_board.xml`` from the target to the development computer via USB
disk as follows:
#. Copy ``my_board.xml`` from the target to the development computer. Again we
have two options:
a. Make sure the USB disk is connected to the target.
Option 1: Use ``scp``
From your development computer, use the ``scp`` command to copy the board
configuration file from your target system back to the
``~/acrn-work`` directory on your development computer. Replace
``10.0.0.200`` with the target system's IP address you found earlier::
#. Copy ``my_board.xml`` to the USB disk:
scp acrn@10.0.0.200:~/acrn-work/my_board.xml ~/acrn-work/
.. code-block:: bash
Option 2: Use a USB disk
a. Make sure the USB disk is connected to the target.
disk="/media/$USER/"$(ls /media/$USER)
cp ~/acrn-work/my_board.xml "$disk"/
sync && sudo umount "$disk"
#. Copy ``my_board.xml`` to the USB disk:
#. Insert the USB disk into the development computer.
.. code-block:: bash
#. Copy ``my_board.xml`` from the USB disk to the development computer:
disk="/media/$USER/"$(ls /media/$USER)
cp ~/acrn-work/my_board.xml "$disk"/
sync && sudo umount "$disk"
.. code-block:: bash
#. Insert the USB disk into the development computer.
disk="/media/$USER/"$(ls /media/$USER)
cp "$disk"/my_board.xml ~/acrn-work
sync && sudo umount "$disk"
#. Copy ``my_board.xml`` from the USB disk to the development computer:
.. code-block:: bash
disk="/media/$USER/"$(ls /media/$USER)
cp "$disk"/my_board.xml ~/acrn-work
sync && sudo umount "$disk"
.. _gsg-dev-setup:
@ -387,7 +422,7 @@ Generate a Scenario Configuration File and Launch Script
********************************************************
In this step, you will download, install, and use the `ACRN Configurator
<https://github.com/projectacrn/acrn-hypervisor/releases/download/v3.0/acrn-configurator-3.0.deb>`__
<https://github.com/projectacrn/acrn-hypervisor/releases/download/v3.1/acrn-configurator-3.1.deb>`__
to generate a scenario configuration file and launch script.
A **scenario configuration file** is an XML file that holds the parameters of
@ -403,7 +438,7 @@ post-launched User VM. Each User VM has its own launch script.
.. code-block:: bash
cd ~/acrn-work
wget https://github.com/projectacrn/acrn-hypervisor/releases/download/v3.0/acrn-configurator-3.0.deb
wget https://github.com/projectacrn/acrn-hypervisor/releases/download/v3.1/acrn-configurator-3.1.deb
If you already have a previous version of the acrn-configurator installed,
you should first remove it:
@ -416,7 +451,7 @@ post-launched User VM. Each User VM has its own launch script.
.. code-block:: bash
sudo apt install -y ./acrn-configurator-3.0.deb
sudo apt install -y ./acrn-configurator-3.1.deb
#. Launch the ACRN Configurator:
@ -474,13 +509,13 @@ post-launched User VM. Each User VM has its own launch script.
settings to meet your application's particular needs. But for now, you
will update only a few settings for functional and educational purposes.
You may see some error messages from the configurator, such as shown here:
You may see some error messages from the Configurator, such as shown here:
.. image:: images/gsg-config-errors.png
:align: center
:class: drop-shadow
The configurator does consistency and validation checks when you load or save
The Configurator does consistency and validation checks when you load or save
a scenario. Notice the Hypervisor and VM1 tabs both have an error icon,
meaning there are issues with configuration options in two areas. Since the
Hypervisor tab is currently highlighted, we're seeing an issue we can resolve
@ -527,7 +562,7 @@ post-launched User VM. Each User VM has its own launch script.
log in to the User VM later in this guide.
#. For **Virtio block device**, click **+** and enter
``/home/acrn/acrn-work/ubuntu-20.04.4-desktop-amd64.iso``. This parameter
``/home/acrn/acrn-work/ubuntu-20.04.5-desktop-amd64.iso``. This parameter
specifies the VM's OS image and its location on the target system. Later
in this guide, you will save the ISO file to that directory. (If you used
a different username when installing Ubuntu on the target system, here's
@ -574,7 +609,7 @@ Build ACRN
cd ./build
ls *.deb
acrn-my_board-MyConfiguration-3.0.deb
acrn-my_board-MyConfiguration-3.1.deb
The Debian package contains the ACRN hypervisor and tools to ease installing
ACRN on the target. The Debian file name contains the board name (``my_board``)
@ -609,37 +644,57 @@ Build ACRN
cd ..
ls *.deb
linux-headers-5.10.115-acrn-service-vm_5.10.115-acrn-service-vm-1_amd64.deb
linux-image-5.10.115-acrn-service-vm_5.10.115-acrn-service-vm-1_amd64.deb
linux-image-5.10.115-acrn-service-vm-dbg_5.10.115-acrn-service-vm-1_amd64.deb
linux-libc-dev_5.10.115-acrn-service-vm-1_amd64.deb
linux-headers-5.15.44-acrn-service-vm_5.15.44-acrn-service-vm-1_amd64.deb
linux-image-5.15.44-acrn-service-vm_5.15.44-acrn-service-vm-1_amd64.deb
linux-image-5.15.44-acrn-service-vm-dbg_5.15.44-acrn-service-vm-1_amd64.deb
linux-libc-dev_5.15.44-acrn-service-vm-1_amd64.deb
#. Copy all the necessary files generated on the development computer to the
target system by USB disk as follows:
target system, using one of these two options:
a. Insert the USB disk into the development computer and run these commands:
Option 1: Use ``scp``
Use the ``scp`` command to copy files from your development computer to
the target system.
Replace ``10.0.0.200`` with the target system's IP address you found earlier::
.. code-block:: bash
scp ~/acrn-work/acrn-hypervisor/build/acrn-my_board-MyConfiguration*.deb \
~/acrn-work/*acrn-service-vm*.deb \
~/acrn-work/MyConfiguration/launch_user_vm_id1.sh \
~/acrn-work/acpica-unix-20210105/generate/unix/bin/iasl \
acrn@10.0.0.200:~/acrn-work
disk="/media/$USER/"$(ls /media/$USER)
cp ~/acrn-work/acrn-hypervisor/build/acrn-my_board-MyConfiguration*.deb "$disk"/
cp ~/acrn-work/*acrn-service-vm*.deb "$disk"/
cp ~/acrn-work/MyConfiguration/launch_user_vm_id1.sh "$disk"/
cp ~/acrn-work/acpica-unix-20210105/generate/unix/bin/iasl "$disk"/
sync && sudo umount "$disk"
Then, go to the target system and put the ``iasl`` tool in its proper
place::
#. Insert the USB disk you just used into the target system and run these
commands to copy the files locally:
.. code-block:: bash
disk="/media/$USER/"$(ls /media/$USER)
cp "$disk"/acrn-my_board-MyConfiguration*.deb ~/acrn-work
cp "$disk"/*acrn-service-vm*.deb ~/acrn-work
cp "$disk"/launch_user_vm_id1.sh ~/acrn-work
sudo cp "$disk"/iasl /usr/sbin/
cd ~/acrn-work
sudo cp iasl /usr/sbin/
sudo chmod a+x /usr/sbin/iasl
sync && sudo umount "$disk"
Option 2: by USB disk
a. Insert the USB disk into the development computer and run these commands:
.. code-block:: bash
disk="/media/$USER/"$(ls /media/$USER)
cp ~/acrn-work/acrn-hypervisor/build/acrn-my_board-MyConfiguration*.deb "$disk"/
cp ~/acrn-work/*acrn-service-vm*.deb "$disk"/
cp ~/acrn-work/MyConfiguration/launch_user_vm_id1.sh "$disk"/
cp ~/acrn-work/acpica-unix-20210105/generate/unix/bin/iasl "$disk"/
sync && sudo umount "$disk"
#. Insert the USB disk you just used into the target system and run these
commands to copy the files locally:
.. code-block:: bash
disk="/media/$USER/"$(ls /media/$USER)
cp "$disk"/acrn-my_board-MyConfiguration*.deb ~/acrn-work
cp "$disk"/*acrn-service-vm*.deb ~/acrn-work
cp "$disk"/launch_user_vm_id1.sh ~/acrn-work
sudo cp "$disk"/iasl /usr/sbin/
sudo chmod a+x /usr/sbin/iasl
sync && sudo umount "$disk"
.. _gsg-install-acrn:
@ -648,7 +703,7 @@ Build ACRN
Install ACRN
************
#. Install the ACRN Debian package and ACRN kernel Debian packages using these
#. On the target system, install the ACRN Debian package and ACRN kernel Debian packages using these
commands:
.. code-block:: bash
@ -664,7 +719,7 @@ Install ACRN
reboot
#. Confirm that you see the GRUB menu with the "ACRN multiboot2" entry. Select
it and proceed to booting ACRN. (It may be autoselected, in which case it
it and proceed to booting ACRN. (It may be auto-selected, in which case it
will boot with this option automatically in 5 seconds.)
.. code-block:: console
@ -720,10 +775,10 @@ Launch the User VM
#. On the target system, use the web browser to go to the `official Ubuntu website <https://releases.ubuntu.com/focal/>`__ to
get the Ubuntu Desktop 20.04 LTS ISO image
``ubuntu-20.04.4-desktop-amd64.iso`` for the User VM. (The same image you
specified earlier in the ACRN Configurator UI. (Alternatively, instead of
``ubuntu-20.04.5-desktop-amd64.iso`` for the User VM. (The same image you
specified earlier in the ACRN Configurator UI.) Alternatively, instead of
downloading it again, you can use a USB drive or ``scp`` to copy the ISO
image file to the ``~/acrn-work`` directory on the target system.)
image file to the ``~/acrn-work`` directory on the target system.
#. If you downloaded the ISO file on the target system, copy it from the
Downloads directory to the ``~/acrn-work/`` directory (the location we said
@ -732,7 +787,7 @@ Launch the User VM
.. code-block:: bash
cp ~/Downloads/ubuntu-20.04.4-desktop-amd64.iso ~/acrn-work
cp ~/Downloads/ubuntu-20.04.5-desktop-amd64.iso ~/acrn-work
#. Launch the User VM:
@ -747,7 +802,7 @@ Launch the User VM
.. code-block:: console
Ubuntu 20.04.4 LTS ubuntu hvc0
Ubuntu 20.04.5 LTS ubuntu hvc0
ubuntu login:
@ -758,7 +813,7 @@ Launch the User VM
.. code-block:: console
Welcome to Ubuntu 20.04.4 LTS (GNU/Linux 5.13.0-30-generic x86_64)
Welcome to Ubuntu 20.04.5 LTS (GNU/Linux 5.13.0-30-generic x86_64)
* Documentation: https://help.ubuntu.com
* Management: https://landscape.canonical.com
@ -795,7 +850,7 @@ Launch the User VM
.. code-block:: console
acrn@vecow:~$ uname -r
5.10.115-acrn-service-vm
5.15.44-acrn-service-vm
The User VM has launched successfully. You have completed this ACRN setup.
@ -811,6 +866,9 @@ Launch the User VM
Next Steps
**************
:ref:`overview_dev` describes the ACRN configuration process, with links to
additional details.
* :ref:`overview_dev` describes the ACRN configuration process, with links to
additional details.
* A follow-on :ref:`GSG_sample_app` tutorial shows how to
configure, build, and run a more real-world sample application with a Real-time
VM communicating with an HMI VM via inter-VM shared memory (IVSHMEM).

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.. _GSG_sample_app:
Sample Application User Guide
#############################
This sample application shows how to create two VMs that are launched on
your target system running ACRN. These VMs communicate with each other
via inter-VM shared memory (IVSHMEM). One VM is a real-time VM running
`cyclictest <https://wiki.linuxfoundation.org/realtime/documentation/howto/tools/cyclictest/start>`__,
an open source application commonly used to measure latencies in
real-time systems. This real-time VM (RT_VM) uses inter-VM shared memory
(IVSHMEM) to send data to a second Human-Machine Interface VM (HMI_VM)
that formats and presents the collected data as a histogram on a web
page shown by a browser. This guide shows how to configure, create, and
launch the two VM images that make up this application.
.. figure:: images/samp-image001.png
:class: drop-shadow
:align: center
:width: 900px
Sample Application Overview
We build these two VM images on your development computer using scripts
in the ACRN source code. Once we have the two VM images, we follow
similar steps shown in the *Getting Started Guide* to define a new ACRN
scenario with two post-launched user VMs with their IVSHMEM connection.
We build a Service VM image and the Hypervisor image based on the
scenario configuration (as we did in the Getting Started Guide).
Finally, we put this all together on the target system, launch the
sample application VMs on ACRN from the Service VM, run the application
parts in each VM, and view the cyclictest histogram results in a browser
running on our HMI VM (or development computer).
While this sample application uses the cyclictest to generate data about
performance latency in the RTVM, we aren't doing any configuration
optimization in this sample to get the best RT performance.
Prerequisites Environment and Images
************************************
Before beginning, use the ``df`` command on your development computer and
verify there's at least 30GB free disk space for building the ACRN
sample application. You may see a different Filesystem name and sizes:
.. code-block:: console
$ df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/sda5 109G 42G 63G 41% /
.. rst-class:: numbered-step
Prepare the ACRN Development and Target Environment
***************************************************
.. important::
Before building the sample application, it's important that you complete
the :ref:`gsg` instructions and leave the development and target systems with
the files created in those instructions.
The :ref:`gsg` instructions get all the tools and packages installed on your
development and target systems that we'll also use to build and run this sample
application.
After following the Getting Started Guide, you'll have a directory
``~/acrn-work`` on your development computer containing directories with the
``acrn-hypervisor`` and ``acrn-kernel`` source code and build output. You'll
also have the board XML file that's needed by the ACRN Configurator to
configure the ACRN hypervisor and set up the VM launch scripts for this sample
application.
Preparing the Target System
===========================
On the target system, reboot and choose the regular Ubuntu image (not the
Multiboot2 choice created when following the Getting Started Guide).
1. Log in as the **acrn** user. We'll be making ssh connections to the target system
later in these steps, so install the ssh server on the target system using::
sudo apt install -y openssh-server
#. We'll need to know the IP address of the target system later. Use the
``hostname -I`` command and look at the first IP address mentioned. You'll
likely see a different IP address than shown in this example:
.. code-block:: console
hostname -I | cut -d ' ' -f 1
10.0.0.200
.. rst-class:: numbered-step
Make the Sample Application
***************************
On your development computer, build the applications used by the sample. The
``rtApp`` app in the RT VM reads the output from the cyclictest program and
sends it via inter-VM shared memory (IVSHMEM) to another regular HMI VM where
the ``userApp`` app receives the data and formats it for presentation using the
``histapp.py`` Python app.
As a normal (e.g., **acrn**) user, follow these steps:
1. Install some additional packages in your development computer used for
building the sample application::
sudo apt install -y cloud-guest-utils schroot kpartx qemu-kvm
#. Check out the ``acrn-hypervisor`` source code branch (already cloned from the
``acrn-hypervisor`` repo when you followed the :ref:`gsg`). We've tagged a
specific version of the hypervisor you should use for the sample app's HMI
VM::
cd ~/acrn-work/acrn-hypervisor
git fetch --all
git checkout v3.1
#. Build the ACRN sample application source code::
cd misc/sample_application/
make all
This builds the ``histapp.py``, ``userApp``, and ``rtApp`` used for the
sample application.
.. rst-class:: numbered-step
Make the HMI_VM Image
*********************
1. Make the HMI VM image. This script runs for about 10 minutes total and will
prompt you to input the passwords for the **acrn** and **root** user in the
HMI_VM image::
cd ~/acrn-work/acrn-hypervisor/misc/sample_application/image_builder
./create_image.sh hmi-vm
After the script is finished, the ``hmi_vm.img`` image file is created in the
``build`` directory. You should see a final message from the script that
looks like this:
.. code-block:: console
2022-08-18T09:53:06+08:00 [ Info ] VM image created at /home/acrn/acrn-work/acrn-hypervisor/misc/sample_application/image_builder/build/hmi_vm.img.
If you don't see such a message, look back through the output to see what
errors are indicated. For example, there could have been a network error
while retrieving packages from the Internet. In such a case, simply trying
the ``create_image.sh`` command again might work.
The HMI VM image is a configured Ubuntu desktop image
ready to launch as an ACRN user VM with the HMI parts of the sample app
installed.
.. rst-class:: numbered-step
Make the RT_VM image
*********************
1. Check out the ``acrn-kernel`` source code branch (already cloned from the
``acrn-kernel`` repo when you followed the :ref:`gsg`). We've tagged a
specific version of the ``acrn-kernel`` you should use for the sample app's
RT VM::
cd ~/acrn-work/acrn-kernel
git fetch --all
git checkout -b sample_rt acrn-tag-sample-application-rt
#. Build the preempt-rt patched kernel used by the RT VM::
make mrproper
cp kernel_config .config
make olddefconfig
make -j $(nproc) deb-pkg
The kernel build can take 15 minutes on a fast computer but could
take 2-3 hours depending on the performance of your development
computer. When done, the build generates four Debian packages in the
directory above the build root directory, as shown by this command::
ls ../*rtvm*.deb
You will see rtvm Debian packages for linux-headers, linux-image
(normal and debug), and linux-libc-dev (your filenames might look a
bit different):
.. code-block:: console
linux-headers-5.10.120-rt70-acrn-kernel-rtvm+_5.10.120-rt70-acrn-kernel-rtvm+-1_amd64.deb
linux-image-5.10.120-rt70-acrn-kernel-rtvm+_5.10.120-rt70-acrn-kernel-rtvm+-1_amd64.deb
linux-image-5.10.120-rt70-acrn-kernel-rtvm+-dbg_5.10.120-rt70-acrn-kernel-rtvm+-1_amd64.deb
linux-libc-dev_5.10.120-rt70-acrn-kernel-rtvm+-1_amd64.deb
#. Make the RT VM image::
cd ~/acrn-work/acrn-hypervisor/misc/sample_application/image_builder
./create_image.sh rt-vm
After the script is finished, the ``rt_vm.img`` image file is created in the ``build``
directory. The RT VM image is a configured Ubuntu image with a
preempt-rt patched kernel used for real-time VMs.
.. rst-class:: numbered-step
Create and Configure the ACRN Scenario
**************************************
Now we turn to building the hypervisor based on the board and scenario
configuration for our sample application. We'll use the board XML file
and ACRN Configurator already on your development computer when you followed
the :ref:`gsg`.
Use the ACRN Configurator to define a new scenario for our two VMs
and generate new launch scripts for this sample application.
1. On your development computer, launch the ACRN Configurator::
cd ~/acrn-work
acrn-configurator
#. Under **Start a new configuration**, confirm that the working folder is
``/home/acrn/acrn-work/MyConfiguration``. Click **Use This Folder**. (If
prompted, confirm it's **OK** to overwrite an existing configuration.)
.. image:: images/samp-image002.png
:class: drop-shadow
:align: center
#. Import your board configuration file as follows:
a. In the **1. Import a board configuration file** panel, click **Browse
for file**.
#. Browse to ``/home/acrn/acrn-work/my_board.xml`` and click **Open**.
Then click **Import Board File**.
.. image:: images/samp-image003.png
:class: drop-shadow
:align: center
#. **Create a new scenario**: select a shared scenario type with a Service VM and
two post-launched VMs. Click **OK**.
.. image:: images/samp-image004.png
:class: drop-shadow
:align: center
The ACRN Configurator will report some problems with the initial scenario
configuration that we'll resolve as we make updates. (Notice the error
indicators on the settings tabs and above the parameters tabs.) The
ACRN Configurator does a verification of the scenario when you open a saved
scenario and when you click on the **Save Scenario And Launch Scripts**
button.
.. image:: images/samp-image004a.png
:class: drop-shadow
:align: center
#. Select the VM0 (Service VM) tab and set the **Console virtual UART type** to
``COM Port 1``. Edit the **Basic Parameters > Kernel
command-line parameters** by appending the existing parameters with ``i915.modeset=1 3``
(to disable the GPU driver loading for Intel GPU device).
.. image:: images/samp-image005.png
:class: drop-shadow
:align: center
#. Select the VM1 tab and change the VM name to HMI_VM. Configure the **Console
virtual UART type** to ``COM Port 1``, set the **Memory size** to ``2048``,
and add the **physical CPU affinity** to pCPU ``0`` and ``1`` (click the
**+** button to create the additional affinity setting), as shown below:
.. image:: images/samp-image006.png
:class: drop-shadow
:align: center
#. Enable GVT-d configuration by clicking the **+** within the **PCI device
setting** options and selecting the VGA compatible controller. Click the
**+** button again to add the USB controller to passthrough to the HMI_VM.
.. image:: images/samp-image007.png
:class: drop-shadow
:align: center
#. Configure the HMI_VM's **virtio console devices** and **virtio network
devices** by clicking the **+** button in the section and setting the values
as shown here (note the **Network interface name** must be ``tap0``):
.. image:: images/samp-image008.png
:class: drop-shadow
:align: center
#. Configure the HMI_VM **virtio block device**. Add the absolute path of your
``hmi_vm.img`` on the target system (we'll copy the generated ``hmi_vm.img``
to this directory in a later step):
.. image:: images/samp-image009.png
:class: drop-shadow
:align: center
That completes the HMI_VM settings.
#. Next, select the VM2 tab and change the **VM name** to RT_VM, change the
**VM type** to ``Real-time``, set the **Console virtual UART type** to ``COM port 1``,
set the **memory size** to ``1024``, set **pCPU affinity** to IDs ``2`` and ``3``, and
check the **Real-time vCPU box** for pCPU ID 2, as shown below:
.. image:: images/samp-image010.png
:class: drop-shadow
:align: center
#. Configure the **virtio console device** for the RT_VM (unlike the HMI_VM, we
don't use a **virtio network device** for this RT_VM):
.. image:: images/samp-image011.png
:align: center
:class: drop-shadow
#. Add the absolute path of your ``rt_vm.img`` on the target system (we'll copy
the ``rt_vm.img`` file we generated earlier to this directory in a later
step):
.. image:: images/samp-image012.png
:class: drop-shadow
:align: center
#. Select the Hypervisor tab: Verify the **build type** is ``Debug``, define the
**InterVM shared memory region** settings as shown below, adding the
HMI_VM and RT_VM as the VMs doing the sharing of this region. (The
missing **Virtual BDF** values will be supplied by the ACRN Configurator
when you save the configuration.)
.. image:: images/samp-image013.png
:class: drop-shadow
:align: center
In the **Debug options**, set the **Serial console port** to
``/dev/ttyS0``, as shown below (this will resolve the message about the
missing serial port configuration):
.. image:: images/samp-image014.png
:class: drop-shadow
:align: center
#. Click the **Save Scenario and Launch Scripts** to validate and save this
configuration and launch scripts. You should see a dialog box saying the
scenario is saved and validated, launch scripts are generated, and all files
successfully saved. Click **OK**.
.. image:: images/samp-image015.png
:class: drop-shadow
:align: center
:width: 400px
#. We're done configuring the sample application scenario. When you saved the
scenario, the ACRN Configurator did a re-verification of all the option
settings and found no issues, so all the error indicators are now cleared.
Exit the ACRN Configurator by clicking the **X** in the top right corner.
.. image:: images/samp-image015a.png
:class: drop-shadow
:align: center
You can see the saved scenario and launch scripts in the working
directory:
.. code-block:: console
$ ls MyConfiguration
launch_user_vm_id1.sh launch_user_vm_id2.sh scenario.xml myboard.board.xml
You'll see the two VM launch scripts (id1 for the HMI_VM, and id2 for
the RT_VM) and the scenario XML file for your sample application (as
well as your board XML file).
.. rst-class:: numbered-step
Build the ACRN Hypervisor and Service VM Images
***********************************************
1. On the development computer, build the ACRN hypervisor using the
board XML and the scenario XML file we just generated::
cd ~/acrn-work/acrn-hypervisor
make clean
make BOARD=~/acrn-work/MyConfiguration/my_board.board.xml SCENARIO=~/acrn-work/MyConfiguration/scenario.xml
The build typically takes about a minute. When done, the build
generates a Debian package in the build directory with your board and
working folder name.
This Debian package contains the ACRN hypervisor and tools for
installing ACRN on the target.
#. Build the ACRN kernel for the Service VM (the sample application
requires a newer version of the Service VM than generated in the
Getting Started Guide, so we'll need to generate it again) using a tagged
version of the ``acrn-kernel``::
cd ~/acrn-work/acrn-kernel
git fetch --all
git checkout acrn-v3.1
make distclean
cp kernel_config_service_vm .config
make olddefconfig
make -j $(nproc) deb-pkg
The kernel build can take 15 minutes or less on a fast computer, but
could take 1-2 hours depending on the performance of your development
computer. When done, the build generates four Debian packages in the
directory above the build root directory:
.. code-block:: console
$ ls ../*acrn-service*.deb
linux-headers-5.15.44-acrn-service-vm_5.15.44-acrn-service-vm-1_amd64.deb
linux-image-5.15.44-acrn-service-vm_5.15.44-acrn-service-vm-1_amd64.deb
linux-image-5.15.44-acrn-service-vm-dbg_5.15.44-acrn-service-vm-1_amd64.deb
linux-libc-dev_5.15.44-acrn-service-vm-1_amd64.deb
.. rst-class:: numbered-step
Copy Files from the Development Computer to Your Target System
**************************************************************
1. Copy all the files generated on the development computer to the
target system. This includes the sample application executable files,
HMI_VM and RT_VM images, Debian packages for the Service VM and
Hypervisor, launch scripts, and the iasl tool built following the
Getting Started Guide. You can use ``scp`` to copy across the local network,
or use a USB stick:
Option 1: use ``scp`` to copy files over the local network
Use ``scp`` to copy files from your development computer to the
``~/acrn-work`` directory on the target (replace the IP address used in
this example with the target system's IP address you found earlier)::
cd ~/acrn-work
scp acrn-hypervisor/misc/sample_application/image_builder/build/*_vm.img \
acrn-hypervisor/build/acrn-my_board-MyConfiguration*.deb \
*acrn-service-vm*.deb MyConfiguration/launch_user_vm_id*.sh \
acpica-unix-20210105/generate/unix/bin/iasl \
acrn@10.0.0.200:~/acrn-work
Then on the target system run these commands::
sudo cp ~/acrn-work/iasl /usr/sbin
sudo ln -s /usr/sbin/iasl /usr/bin/iasl
Option 2: use a USB stick to copy files
Because the VM image files are large, format your USB stick with a file
system that supports files greater than 4GB: extFAT or NTFS, but not FAT32.
Insert a USB stick into the development computer and run these commands::
disk="/media/$USER/"$(ls /media/$USER)
cd ~/acrn-work
cp acrn-hypervisor/misc/sample_application/image_builder/build/*_vm.img rt_vm.img "$disk"
cp acrn-hypervisor/build/acrn-my_board-MyConfiguration*.deb "$disk"
cp *acrn-service-vm*.deb "$disk"
cp MyConfiguration/launch_user_vm_id*.sh "$disk"
cp acpica-unix-20210105/generate/unix/bin/iasl "$disk"
sync && sudo umount "$disk"
Move the USB stick you just used to the target system and run
these commands to copy the files locally::
disk="/media/$USER/"$(ls /media/$USER)
cp "$disk"/*_vm.img ~/acrn-work
cp "$disk"/acrn-my_board-MyConfiguration*.deb ~/acrn-work
cp "$disk"/*acrn-service-vm*.deb ~/acrn-work
cp "$disk"/launch_user_vm_id*.sh ~/acrn-work
sudo cp "$disk"/iasl /usr/sbin/
sudo ln -s /usr/sbin/iasl /usr/bin/iasl
sync && sudo umount "$disk"
.. rst-class:: numbered-step
Install and Run ACRN on the Target System
*****************************************
1. On your target system, install the ACRN Debian package and ACRN
kernel Debian packages using these commands::
cd ~/acrn-work
sudo apt purge acrn-hypervisor
sudo apt install ./acrn-my_board-MyConfiguration*.deb
sudo apt install ./*acrn-service-vm*.deb
#. Enable networking services for sharing with the HMI User VM::
sudo systemctl enable --now systemd-networkd
#. Reboot the system::
reboot
#. Confirm that you see the GRUB menu with the "ACRN multiboot2" entry. Select
it and press :kbd:`Enter` to proceed to booting ACRN. (It may be
auto-selected, in which case it will boot with this option automatically in 5
seconds.)
.. image:: images/samp-image016.png
:class: drop-shadow
:align: center
This will boot the ACRN hypervisor and launch the Service VM.
#. Log in to the Service VM (using the target's keyboard and HDMI monitor) using
the ``acrn`` username.
#. Find the Service VM's IP address (the first IP address shown by this command):
.. code-block:: console
$ hostname -I | cut -d ' ' -f 1
10.0.0.200
#. From your development computer, ssh to your target system's Service VM
using that IP address::
ssh acrn@10.0.0.200
#. In that ssh session, launch the HMI_VM by using the ``launch_user_vm_id1.sh`` launch
script::
sudo chmod +x ~/acrn-work/launch_user_vm_id1.sh
sudo ~/acrn-work/launch_user_vm_id1.sh
#. The launch script will start up the HMI_VM and show an Ubuntu login
prompt in your ssh session (and a graphical login on your target's HDMI
monitor).
Log in to the HMI_VM as **root** user (not **acrn**) using your development
computer's ssh session:
.. code-block:: console
:emphasize-lines: 1
ubuntu login: root
Password:
Welcome to Ubuntu 20.04.04 LTS (GNU/Linux 5.15.0-46-generic x86_64)
. . .
(acrn-guest)root@ubuntu:~#
#. Find the HMI_VM's IP address:
.. code-block:: console
(acrn-guest)root@ubuntu:~# hostname -I | cut -d ' ' -f 1
10.0.0.100
If no IP address is reported, run this command to request an IP address and check again::
dhclient
#. Run the HMI VM sample application ``userApp`` (in the background)::
sudo /root/userApp &
and then the ``histapp.py`` application::
sudo python3 /root/histapp.py
At this point, the HMI_VM is running and we've started the HMI parts of
the sample application. Next, we will launch the RT_VM and its parts of
the sample application.
#. On your development computer, open a new terminal window and start a
new ssh connection to your target system's Service VM::
ssh acrn@10.0.0.200
#. In this ssh session, launch the RT_VM by using the vm_id2 launch
script::
sudo chmod +x ~/acrn-work/launch_user_vm_id2.sh
sudo ~/acrn-work/launch_user_vm_id2.sh
#. The launch script will start up the RT_VM. Lots of system messages will go
by and end with an Ubuntu login prompt.
Log in to the RT_VM as **root** user (not **acrn**) in this ssh session:
.. code-block:: console
:emphasize-lines: 1
ubuntu login: root
Password:
Welcome to Ubuntu 20.04.04 LTS (GNU/Linux 5.10.120-rt70-acrn-kernel-rtvm X86_64)
. . .
(acrn-guest)root@ubuntu:~#
#. Run the cyclictest in this RT_VM (in the background)::
cyclictest -p 80 --fifo="./data_pipe" -q &
and then the rtApp in this RT_VM::
sudo /root/rtApp
Now the two parts of the sample application are running:
* The RT_VM is running cyclictest, which generates latency data, and the rtApp
sends this data via IVSHMEM to the HMI_VM.
* In the HMI_VM, the userApp receives the cyclictest data and provides it to the
histapp.py Python application that is running a web server.
We can view this data displayed as a histogram:
Option 1: Use a browser on your development computer
Open a web browser on your development computer to the
HMI_VM IP address we found in an earlier step (e.g., http://10.0.0.100).
Option 2: Use a browser on the HMI VM using the target system console
Log in to the HMI_VM on the target system's console. (If you want to
log in as root, click on the "Not listed?" link under the username choices you
do see and enter the root username and password.) Open the web browser to
http://localhost.
Refresh the browser. You'll see a histogram graph showing the
percentage of latency time intervals reported by cyclictest. The histogram will
update every time you refresh the browser. (Notice the count of samples
increases as reported on the vertical axis label.)
.. figure:: images/samp-image018.png
:class: drop-shadow
:align: center
Example Histogram Output from Cyclictest as Reported by the Sample App
The horizontal axis represents the latency values in microseconds, and the
vertical axis represents the percentage of occurrences of those values.
Congratulations
***************
That completes the building and running of this sample application. You
can view the application's code in the
``~/acrn-work/acrn-hypervisor/misc/sample_application`` directory on your
development computer (cloned from the ``acrn-hypervisor`` repo).
.. note:: As mentioned at the beginning, while this sample application uses the
cyclictest to generate data about performance latency in the RT_VM, we
haven't done any configuration optimization in this sample to get the
best real-time performance.

83
doc/reference/hardware.rst
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@ -60,42 +60,53 @@ level includes the activities described in the lower levels.
.. _UP2 Shop:
https://up-shop.org/home/270-up-squared.html
+------------------------+----------------------+-------------------------------------------------------------------------------------------------------------------------------------------+
| | | .. rst-class:: |
| | | centered |
| | | |
| | | ACRN Version |
| | +-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+
| Intel Processor Family | Tested Products | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | centered | centered | centered | centered | centered | centered | centered |
| | | | | | | | | |
| | | v1.0 | v1.6.1 | v2.0 | v2.5 | v2.6 | v2.7 | v3.0 |
+========================+======================+===================+===================+===================+===================+===================+===================+===================+
| Tiger Lake | `Vecow SPC-7100`_ | | .. rst-class:: |
| | | | centered |
| | | | |
| | | | Maintenance |
+------------------------+----------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+
| Tiger Lake | `NUC11TNHi5`_ | | | | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | | | | centered | centered | centered |
| | | | | | | | |
| | | | | | Release | Maintenance | Community |
+------------------------+----------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+
| Whiskey Lake | `WHL-IPC-I5`_ | | | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | | | centered | centered | centered |
| | | | | | | |
| | | | | Release | Maintenance | Community |
+------------------------+----------------------+-------------------+-------------------+-------------------+-------------------+-------------------+---------------------------------------+
| Kaby Lake | `NUC7i7DNHE`_ | | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | | centered | centered | centered |
| | | | | | |
| | | | Release | Maintenance | Community |
+------------------------+----------------------+-------------------+-------------------+---------------------------------------+-----------------------------------------------------------+
| Apollo Lake | | `NUC6CAYH`_, | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | `UP2-N3350`_, | centered | centered | centered |
| | | `UP2-N4200`_, | | | |
| | | `UP2-x5-E3940`_ | Release | Maintenance | Community |
+------------------------+----------------------+-------------------+-------------------+---------------------------------------------------------------------------------------------------+
.. _ASRock iEPF-9010S-EY4:
https://www.asrockind.com/en-gb/iEPF-9010S-EY4
.. _ASRock iEP-9010E:
https://www.asrockind.com/en-gb/iEP-9010E
+------------------------+----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------+-------------------+
| | | .. rst-class:: |
| | | centered |
| | | |
| | | ACRN Version |
| | +-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+
| Intel Processor Family | Tested Products | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | centered | centered | centered | centered | centered | centered | centered | centered |
| | | | | | | | | | |
| | | v1.0 | v1.6.1 | v2.0 | v2.5 | v2.6 | v2.7 | v3.0 | v3.1 |
+========================+============================+===================+===================+===================+===================+===================+===================+===================+===================+
| Alder Lake | | `ASRock iEPF-9010S-EY4`_,| | .. rst-class:: | .. rst-class:: |
| | | `ASRock iEP-9010E`_ | | centered | centered |
| | | | | |
| | | | Release | Community |
+------------------------+----------------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+
| Tiger Lake | `Vecow SPC-7100`_ | | .. rst-class:: |
| | | | centered |
| | | | |
| | | | Maintenance |
+------------------------+----------------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+---------------------------------------+
| Tiger Lake | `NUC11TNHi5`_ | | | | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | | | | centered | centered | centered |
| | | | | | | | |
| | | | | | Release | Maintenance | Community |
+------------------------+----------------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-------------------+---------------------------------------+
| Whiskey Lake | `WHL-IPC-I5`_ | | | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | | | centered | centered | centered |
| | | | | | | |
| | | | | Release | Maintenance | Community |
+------------------------+----------------------------+-------------------+-------------------+-------------------+-------------------+-------------------+-----------------------------------------------------------+
| Kaby Lake | `NUC7i7DNHE`_ | | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | | centered | centered | centered |
| | | | | | |
| | | | Release | Maintenance | Community |
+------------------------+----------------------------+-------------------+-------------------+---------------------------------------+-------------------------------------------------------------------------------+
| Apollo Lake | | `NUC6CAYH`_, | .. rst-class:: | .. rst-class:: | .. rst-class:: |
| | | `UP2-N3350`_, | centered | centered | centered |
| | | `UP2-N4200`_, | | | |
| | | `UP2-x5-E3940`_ | Release | Maintenance | Community |
+------------------------+----------------------------+-------------------+-------------------+-----------------------------------------------------------------------------------------------------------------------+
* **Release**: New ACRN features are complete and tested for the listed product.
This product is recommended for this ACRN version. Support for older products

191
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@ -0,0 +1,191 @@
.. _release_notes_3.1:
ACRN v3.1 (Sep 2022) Draft
##########################
We are pleased to announce the release of the Project ACRN hypervisor
version 3.1.
ACRN is a flexible, lightweight reference hypervisor that is built with
real-time and safety-criticality in mind. It is optimized to streamline
embedded development through an open-source platform. See the
:ref:`introduction` introduction for more information.
All project ACRN source code is maintained in the
https://github.com/projectacrn/acrn-hypervisor repository and includes
folders for the ACRN hypervisor, the ACRN device model, tools, and
documentation. You can download this source code either as a zip or
tar.gz file (see the `ACRN v3.1 GitHub release page
<https://github.com/projectacrn/acrn-hypervisor/releases/tag/v3.1>`_) or
use Git ``clone`` and ``checkout`` commands::
git clone https://github.com/projectacrn/acrn-hypervisor
cd acrn-hypervisor
git checkout v3.1
The project's online technical documentation is also tagged to
correspond with a specific release: generated v3.1 documents can be
found at https://projectacrn.github.io/3.1/. Documentation for the
latest development branch is found at https://projectacrn.github.io/latest/.
ACRN v3.1 requires Ubuntu 20.04. Follow the instructions in the
:ref:`gsg` to get started with ACRN.
What's New in v3.1
******************
More ACRN Configuration Improvements
Release v3.0 featured a new ACRN Configurator UI tool with a more intuitive
design and workflow that simplifies getting the setup for the ACRN hypervisor
right. With this v3.1 release, we've continued making improvements to the
Configurator including more comprehensive error checking with more
developer-friendly messages. You'll also see additional advanced
configuration settings for tuning real-time performance including Cache
Allocation Technology (CAT) and vCPU affinity. Read more in the
:ref:`acrn_configurator_tool` and :ref:`scenario-config-options` documents.
If you have feedback on this, or other aspects of ACRN, please share them on
the `ACRN users mailing list <https://lists.projectacrn.org/g/acrn-users>`_.
As with the v3.0 release, We've simplified installation of the Configurator by providing a Debian
package that you can download from the `ACRN v3.1 tag assets
<https://github.com/projectacrn/acrn-hypervisor/releases/download/v3.1/acrn-configurator-3.1.deb>`_
and install. See the :ref:`gsg` for more information.
Improved Board Inspector Collection and Reporting
You run the ACRN Board Inspector tool to collect information about your target
system's processors, memory, devices, and more. The generated board XML file
is used by the ACRN Configurator to determine which ACRN configuration options
are possible, as well as possible values for target system resources. The v3.1
Board Inspector has improved scanning and provides more messages about
potential issues or limitations of your target system that could impact ACRN
configuration options.
The Board Inspector is updated to probe beyond CPUID
information for Cache Allocation Technology (CAT) support and also detects
availability of L3 CAT by accessing the CAT MSRs directly. Read more in
:ref:`board_inspector_tool`.
Sample Application with Two Post-Launched VMs
With this v3.1 release, we provide a follow-on :ref:`GSG_sample_app` to the
:ref:`gsg`. This sample application shows how to create two VMs that are
launched on your target system running ACRN. One VM is a real-time VM running
`cyclictest
<https://wiki.linuxfoundation.org/realtime/documentation/howto/tools/cyclictest/start>`__,
an open source application commonly used to measure latencies in real-time
systems. This real-time VM (RT_VM) uses inter-VM shared memory (IVSHMEM) to
send data to a second Human-Machine Interface VM (HMI_VM) that formats and
presents the collected data as a histogram on a web page shown by a browser.
This guide shows how to configure, create, and launch the two VM images that
make up this application. Full code for the sample application is provided in
the acrn-hypervisor GitHub repo :acrn_file:`misc/sample_application`.
Multiple-Displays Support for VMs
The virtio-gpu mechanism is enhanced to support VMs with multiple displays.
TODO: add reference to tutorial
Improved TSC frequency reporting
The hypervisor now reports TSC frequency in KHz so that VMs can get that number
without calibrating to a high precision timer.
Upgrading to v3.1 from Previous Releases
****************************************
As with the v3.0 release With the introduction of the Configurator UI tool, the need for manually editing
XML files is gone. While working on this improved Configurator, we've also made
many adjustments to available options in the underlying XML files, including
merging the previous scenario and launch XML files into a combined scenario XML
file. The board XML file generated by the v3.1 Board Inspector tool includes
more information about the target system that is needed by the v3.1
Configurator.
We recommend you generate a new board XML for your target system with the v3.1
Board Inspector and use the v3.1 Configurator to generate a new
scenario XML file and launch scripts. Board XML and Scenario XML files
created by previous ACRN versions will not work with the v3.1 ACRN hypervisor
build process and could produce unexpected errors during the build.
Given the scope of changes for the v3.1 release, we have recommendations for how
to upgrade from prior ACRN versions:
1. Start fresh from our :ref:`gsg`. This is the best way to ensure you have a
v3.1-ready board XML file from your target system and generate a new scenario
XML and launch scripts from the new ACRN Configurator that are consistent and
will work for the v3.1 build system.
#. Use the :ref:`upgrade tool <upgrading_configuration>` to attempt upgrading
configuration files that worked with a release before v3.1. See
:ref:`upgrading_configuration` for details.
#. Manually edit your prior scenario XML and launch XML files to make them
compatible with v3.1. This is not our recommended approach.
Here are some additional details about upgrading to the v3.1 release.
Generate New Board XML
======================
Board XML files, generated by ACRN board inspector, contain board information
that is essential for building the ACRN hypervisor and setting up User VMs.
Compared to previous versions, ACRN v3.1 adds the following information to the board
XML file for supporting new features and fixes:
- <TODO: topic and PR reference>
See the :ref:`board_inspector_tool` documentation for a complete list of steps
to install and run the tool.
Update Configuration Options
============================
<TO DO>
As part of the developer experience improvements to ACRN configuration, the following XML elements
were refined in the scenario XML file:
- <TO DO>
The following elements are added to scenario XML files.
- <TO DO>
The following elements were removed.
- <TO DO>
See the :ref:`scenario-config-options` documentation for details about all the
available configuration options in the new Configurator.
Document Updates
****************
Sample Application User Guide
The new :ref:`GSG_sample_app` documentation shows how to configure, build, and
run a practical application with a Real-Time VM and Human-Machine Interface
VM that communicate using inter-VM shared memory.
We've also made edits throughout the documentation to improve clarity,
formatting, and presentation. We started updating feature enabling tutorials
based on the new Configurator, and will continue updating them after the v3.1
release (in the `latest documentation <https://docs.projectacrn.org>`_). Here
are some of the more significant updates:
.. rst-class:: rst-columns2
* :ref:`gsg`
* :ref:`GSG_sample_app`
* :ref:`rdt_configuration`
* :ref:`acrn-dm_parameters-and-launch-script`
* :ref:`scenario-config-options`
Fixed Issues Details
********************
.. comment example item
- :acrn-issue:`5626` - Host Call Trace once detected
Known Issues
************

40
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@ -0,0 +1,40 @@
# parse the git diff --stat output and created a reST list of
# (significantly) changed files
#
# doc/develop.rst | 2 +
# doc/developer-guides/contribute_guidelines.rst | 116 +++-
# doc/developer-guides/hld/hld-devicemodel.rst | 8 +-
# doc/developer-guides/hld/hld-hypervisor.rst | 1 +
# doc/developer-guides/hld/hv-rdt.rst | 126 ++--
# doc/developer-guides/hld/ivshmem-hld.rst | 70 ++
# doc/developer-guides/hld/mmio-dev-passthrough.rst | 40 ++
# doc/developer-guides/hld/virtio-net.rst | 42 +-
# doc/developer-guides/hld/vuart-virt-hld.rst | 2 +-
# doc/getting-started/building-from-source.rst | 39 +-
function getLabel(filename)
{
label="Label not found in " filename
while ((getline line < filename) > 0) {
# looking for first occurance of .. _label name here:
if (match(line, /^\.\. _([^:]+):/, a) !=0) {
label=a[1]
break
}
}
close(filename)
return label
}
BEGIN {
if (changes < 1) {changes=10}
print "Showing docs in master branch with " changes " or more changes."
}
# print label for files with more than specified changed lines
$3 >= changes {
lable=getLabel($1)
if (label !~ /^Label not/ ) { print "* :ref:`" label "`" }
else { print "* " substr($1,5) " was deleted." }
}

27
doc/scripts/changed-docs.sh Normal file
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@ -0,0 +1,27 @@
#!/bin/bash
# Create a reST :ref: list of changed documents for the release notes
# comparing the specified tag with master branch
#
#
if [ -z $1 ]; then
echo
echo Create a reST :ref: list of change documents for the release notes
echo comparing the specified tag with the master branch
echo
echo Usage:
echo \ \ changed-docs.sh upstream/release_3.0 [changed amount]
echo
echo \ \ where the optional [changed amount] \(default 10\) is the number
echo \ \ of lines added/modified/deleted before showing up in this report.
echo
elif [ "$(basename $(pwd))" != "acrn-hypervisor" ]; then
echo
echo Script must be run in the acrn-hypervisor directory and not $(basename $(pwd))
else
dir=`dirname $0`
git diff --stat `git rev-parse $1` `git rev-parse master` | \
grep \.rst | \
awk -v changes=$2 -f $dir/changed-docs.awk
fi

1
doc/static/acrn-custom.css vendored
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@ -303,6 +303,7 @@ div.numbered-step h2::before {
font-weight: bold;
line-height: 1.6em;
margin-right: 5px;
margin-left: -1.8em;
text-align: center;
width: 1.6em;}

1
doc/try.rst
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@ -15,6 +15,7 @@ hypervisor, the Service VM, and a User VM on a supported Intel target platform.
reference/hardware
getting-started/overview_dev
getting-started/getting-started
getting-started/sample-app
After getting familiar with ACRN development, check out these
:ref:`develop_acrn` for information about more-advanced scenarios and enabling

284
doc/tutorials/cpu_sharing.rst
View File

@ -1,196 +1,148 @@
.. _cpu_sharing:
Enable CPU Sharing in ACRN
##########################
Enable CPU Sharing
##################
Introduction
************
About CPU Sharing
*****************
The goal of CPU Sharing is to fully utilize the physical CPU resource to
support more virtual machines. ACRN only supports 1 to 1
mapping mode between virtual CPUs (vCPUs) and physical CPUs (pCPUs).
Because of the lack of CPU sharing ability, the number of VMs is
limited. To support CPU Sharing, we have introduced a scheduling
framework and implemented two simple small scheduling algorithms to
satisfy embedded device requirements. Note that, CPU Sharing is not
available for VMs with local APIC passthrough (``--lapic_pt`` option).
CPU sharing allows the virtual CPUs (vCPUs) of different VMs to run on the same
physical CPU, just like how multiple processes run concurrently on a single CPU.
Internally the hypervisor adopts time slicing scheduling and periodically
switches among those vCPUs.
Scheduling Framework
********************
This feature can help improve overall CPU utilization when the VMs are not fully
loaded. However, sharing a physical CPU among multiple vCPUs increases the
worst-case response latency of them, and thus is not suitable for vCPUs running
latency-sensitive workloads.
To satisfy the modularization design concept, the scheduling framework
layer isolates the vCPU layer and scheduler algorithm. It does not have
a vCPU concept so it is only aware of the thread object instance. The
thread object state machine is maintained in the framework. The
framework abstracts the scheduler algorithm object, so this architecture
can easily extend to new scheduler algorithms.
Dependencies and Constraints
****************************
.. figure:: images/cpu_sharing_framework.png
Consider the following dependencies and constraints:
* CPU sharing is a hypervisor feature that is hardware and OS neutral.
* CPU sharing is not available for real-time VMs or for VMs with local APIC
passthrough (via the LAPIC passthrough option in the ACRN Configurator or via
the Device Model ``--lapic_pt`` option).
* You can choose the scheduler the hypervisor uses. A scheduler is an algorithm
for determining the priority of VMs running on a shared virtual CPU. ACRN
supports the following schedulers:
- Borrowed Virtual Time (BVT), which fairly allocates time slices to multiple
vCPUs pinned to the same physical CPU. The BVT scheduler is the default and
is sufficient for most use cases.
- No-Operation (NOOP), which runs at most one vCPU on each physical CPU.
- Priority based, which supports vCPU scheduling based on their static
priorities defined in the scenario configuration. A vCPU can be running only
if there is no higher-priority vCPU running on the same physical CPU.
Configuration Overview
**********************
You use the :ref:`acrn_configurator_tool` to enable CPU sharing by assigning the
same set of physical CPUs to multiple VMs and selecting a scheduler. The
following documentation is a general overview of the configuration process.
To assign the same set of physical CPUs to multiple VMs, set the following
parameters in each VM's **Basic Parameters**:
* VM type: Standard (Real-time VMs don't support CPU sharing)
* Physical CPU affinity > pCPU ID: Select a physical CPU by its core ID.
* To add another physical CPU, click **+** on the right side of an existing CPU.
Or click **-** to delete a CPU.
* Repeat the process to assign the same physical CPUs to another VM.
.. image:: images/configurator-cpusharing-affinity.png
:align: center
:class: drop-shadow
The below diagram shows that the vCPU layer invokes APIs provided by
scheduling framework for vCPU scheduling. The scheduling framework also
provides some APIs for schedulers. The scheduler mainly implements some
callbacks in an ``acrn_scheduler`` instance for scheduling framework.
Scheduling initialization is invoked in the hardware management layer.
To select a scheduler, go to **Hypervisor Global Settings > Advanced Parameters
> Virtual CPU scheduler** and select a scheduler from the list.
.. figure:: images/cpu_sharing_api.png
.. image:: images/configurator-cpusharing-scheduler.png
:align: center
:class: drop-shadow
CPU Affinity
*************
Example Configuration
*********************
We do not support vCPU migration; the assignment of vCPU mapping to
pCPU is fixed at the time the VM is launched. The statically configured
cpu_affinity in the VM configuration defines a superset of pCPUs that
the VM is allowed to run on. One bit in this bitmap indicates that one pCPU
could be assigned to this VM, and the bit number is the pCPU ID. A pre-launched
VM is launched on exactly the number of pCPUs assigned in
this bitmap. The vCPU to pCPU mapping is implicitly indicated: vCPU0 maps
to the pCPU with lowest pCPU ID, vCPU1 maps to the second lowest pCPU ID, and
so on.
The following steps show how to enable and verify CPU sharing between two User
VMs. The example extends the information provided in the :ref:`gsg`.
For post-launched VMs, acrn-dm could choose to launch a subset of pCPUs that
are defined in cpu_affinity by specifying the assigned Service VM vCPU's lapic_id
(``--cpu_affinity`` option). But it can't assign any pCPUs that are not
included in the VM's cpu_affinity.
#. In the ACRN Configurator, create a shared scenario with a Service VM and two
post-launched User VMs.
Here is an example for affinity:
#. For the first User VM, set the following parameters in the VM's **Basic
Parameters**:
- VM0: 2 vCPUs, pinned to pCPU0 and pCPU1
- VM1: 2 vCPUs, pinned to pCPU0 and pCPU1
- VM2: 2 vCPUs, pinned to pCPU2 and pCPU3
* VM name: This example uses ``POST_STD_VM1``.
* VM type: ``Standard``
* Physical CPU affinity: Select pCPU ID ``1``, then click **+** and select
pCPU ID ``2`` to assign the VM to CPU cores 1 and 2.
.. figure:: images/cpu_sharing_affinity.png
:align: center
.. image:: images/configurator-cpusharing-vm1.png
:align: center
:class: drop-shadow
Thread Object State
*******************
.. image:: images/configurator-cpusharing-affinity.png
:align: center
:class: drop-shadow
The thread object contains three states: RUNNING, RUNNABLE, and BLOCKED.
#. For the second User VM, set the following parameters in the VM's **Basic
Parameters**:
.. figure:: images/cpu_sharing_state.png
:align: center
* VM name: This example uses ``POST_STD_VM2``.
* VM type: ``Standard``
* Physical CPU affinity: Select pCPU ID ``1`` and ``2``. The pCPU IDs must be
the same as those of ``POST_STD_VM1`` to use the CPU sharing function.
After a new vCPU is created, the corresponding thread object is
initiated. The vCPU layer invokes a wakeup operation. After wakeup, the
state for the new thread object is set to RUNNABLE, and then follows its
algorithm to determine whether or not to preempt the current running
thread object. If yes, it turns to the RUNNING state. In RUNNING state,
the thread object may turn back to the RUNNABLE state when it runs out
of its timeslice, or it might yield the pCPU by itself, or be preempted.
The thread object under RUNNING state may trigger sleep to transfer to
BLOCKED state.
#. In **Hypervisor Global Settings > Advanced Parameters > Virtual CPU
scheduler**, confirm that the default scheduler, Borrowed Virtual Time, is
selected.
Scheduler
*********
#. Save the scenario and launch script.
The below block diagram shows the basic concept for the scheduler. There
are four kinds of schedulers in the diagram: NOOP (No-Operation) scheduler,
the IO sensitive Round Robin scheduler, the priority based scheduler and
the BVT (Borrowed Virtual Time) scheduler. By default, BVT is used.
#. Build ACRN, copy all the necessary files from the development computer to
the target system, and launch the Service VM and post-launched User VMs.
#. In the :ref:`ACRN hypervisor shell<acrnshell>`, check the CPU sharing via
the ``vcpu_list`` command. For example:
- **No-Operation scheduler**:
.. code-block:: none
The NOOP (No-operation) scheduler has the same policy as the original
1-1 mapping previously used; every pCPU can run only two thread objects:
one is the idle thread, and another is the thread of the assigned vCPU.
With this scheduler, vCPU works in Work-Conserving mode, which always
tries to keep resources busy, and will run once it is ready. The idle thread
can run when the vCPU thread is blocked.
ACRN:\>vcpu_list
- **Priority based scheduler**:
VM ID PCPU ID VCPU ID VCPU ROLE VCPU STATE THREAD STATE
===== ======= ======= ========= ========== ==========
0 0 0 PRIMARY Running RUNNABLE
0 1 1 SECONDARY Running BLOCKED
0 2 2 SECONDARY Running BLOCKED
0 3 3 SECONDARY Running BLOCKED
1 1 0 PRIMARY Running RUNNING
1 2 1 SECONDARY Running BLOCKED
2 1 0 PRIMARY Running BLOCKED
2 2 1 SECONDARY Running RUNNING
The priority based scheduler can support vCPU scheduling based on their
pre-configured priorities. A vCPU can be running only if there is no
higher priority vCPU running on the same pCPU. For example, in some cases,
we have two VMs, one VM can be configured to use **PRIO_LOW** and the
other one to use **PRIO_HIGH**. The vCPU of the **PRIO_LOW** VM can
only be running when the vCPU of the **PRIO_HIGH** VM voluntarily relinquishes
usage of the pCPU.
The VM ID, PCPU ID, VCPU ID, and THREAD STATE columns provide information to
help you check CPU sharing. In the VM ID column, VM 0 is the Service VM, VM 1
is POST_STD_VM1, and VM 2 is POST_STD_VM2. The output shows that ACRN
assigned all physical CPUs (pCPUs) to VM 0 as expected. It also confirms that
you assigned pCPUs 1 and 2 to VMs 1 and 2 (via the ACRN Configurator). vCPU 1
of VM 0 and vCPU 0 of VM 1 and VM 2 are running on the same physical CPU;
they are sharing the physical CPU execution time. The thread state column
shows the current states of the vCPUs. The BLOCKED state can occur for
different reasons, most likely the vCPU is waiting for an I/O operation to be
completed. Once it is done, the state will change to RUNNABLE. When this vCPU
gets its pCPU execution time, its state will change to RUNNING, then the vCPU
is actually running on the pCPU.
- **Borrowed Virtual Time scheduler**:
BVT (Borrowed Virtual time) is a virtual time based scheduling
algorithm, it dispatches the runnable thread with the earliest
effective virtual time.
- **Virtual time**: The thread with the earliest effective virtual
time (EVT) is dispatched first.
- **Warp**: a latency-sensitive thread is allowed to warp back in
virtual time to make it appear earlier. It borrows virtual time from
its future CPU allocation and thus does not disrupt long-term CPU
sharing
- **MCU**: minimum charging unit, the scheduler account for running time
in units of MCU.
- **Weighted fair sharing**: each runnable thread receives a share of
the processor in proportion to its weight over a scheduling
window of some number of MCU.
- **C**: context switch allowance. Real time by which the current
thread is allowed to advance beyond another runnable thread with
equal claim on the CPU. C is similar to the quantum in conventional
timesharing.
Scheduler configuration
* The scheduler used at runtime is defined in the scenario XML file
via the :option:`hv.FEATURES.SCHEDULER` option. The default scheduler
is **SCHED_BVT**. Use the :ref:`ACRN Configurator tool <acrn_configurator_tool>`
if you want to change this scenario option value.
The default scheduler is **SCHED_BVT**.
* The cpu_affinity could be configured by one of these approaches:
- Without ``cpu_affinity`` option in acrn-dm. This launches the user VM
on all the pCPUs that are included in the statically configured cpu_affinity.
- With ``cpu_affinity`` option in acrn-dm. This launches the user VM on
a subset of the configured cpu_affinity pCPUs.
For example, assign physical CPUs 0 and 1 to this VM::
--cpu_affinity 0,1
Example
*******
Use the following settings to support this configuration in the shared scenario:
+---------+--------+-------+-------+
|pCPU0 |pCPU1 |pCPU2 |pCPU3 |
+=========+========+=======+=======+
|Service VM + WaaG |RT Linux |
+------------------+---------------+
- offline pcpu2-3 in Service VM.
- launch guests.
- launch WaaG with "--cpu_affinity 0,1"
- launch RT with "--cpu_affinity 2,3"
After you start all VMs, check the CPU affinities from the Hypervisor
console with the ``vcpu_list`` command:
.. code-block:: none
ACRN:\>vcpu_list
VM ID PCPU ID VCPU ID VCPU ROLE VCPU STATE THREAD STATE
===== ======= ======= ========= ========== ==========
0 0 0 PRIMARY Running RUNNING
0 1 1 SECONDARY Running RUNNING
1 0 0 PRIMARY Running RUNNABLE
1 1 1 SECONDARY Running BLOCKED
2 2 0 PRIMARY Running RUNNING
2 3 1 SECONDARY Running RUNNING
Note: the THREAD STATE are instant states, they will change at any time.
Learn More
**********
For details on the ACRN CPU virtualization high-level design, For the
:ref:`hv-cpu-virt`.

6
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@ -72,12 +72,6 @@ For the shared memory region:
blank. If the field is blank, the tool provides an address when the
configuration is saved.
.. note::
The release v3.0 ACRN Configurator has an issue where you need to save the
configuration twice to see the generated BDF address in the shared memory
setting. (:acrn-issue:`7831`)
#. Add more VMs to the shared memory region by clicking **+** on the right
side of an existing VM. Or click **-** to delete a VM.

3
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@ -26,6 +26,9 @@ Consider the following dependencies and constraints:
* When a device is assigned to a VM via GVT-d, no other VMs can use it.
* For ASRock systems, disable the BIOS setting "Above 4G Decoding" (under
Advanced Menu > SA Configuration) to enable the GVT-d feature.
.. note:: After GVT-d is enabled, have either a serial port
or SSH session open in the Service VM to interact with it.

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12
doc/tutorials/rdt_configuration.rst
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@ -164,12 +164,12 @@ The table title shows important information:
The above example shows an L2 cache table. VMs assigned to any CPU cores 2-6 can
have cache allocated to them.
The table's columns show the names of all VMs that are assigned to the CPU cores
noted in the table title, as well as their vCPU IDs. The table categorizes the
vCPUs as either standard or real-time. The real-time vCPUs are those that are
set as real-time in the VM's parameters. All other vCPUs are considered
standard. The above example shows one real-time vCPU (VM1 vCPU 2) and two
standard vCPUs (VM0 vCPU 2 and 6).
The table's left-most column shows the names of all VMs that are assigned to the
CPU cores noted in the table title, as well as their vCPU IDs. The table
categorizes the vCPUs as either standard or real-time. The real-time vCPUs are
those that are set as real-time in the VM's parameters. All other vCPUs are
considered standard. The above example shows one real-time vCPU (VM1 vCPU 2) and
two standard vCPUs (VM0 vCPU 2 and 6).
.. note::

5
doc/tutorials/rtvm_performance_tips.rst
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@ -189,8 +189,9 @@ Tip: Disable the software workaround for Machine Check Error on Page Size Change
By default, the software workaround for Machine Check Error on Page Size
Change is conditionally applied to the models that may be affected by the
issue. However, the software workaround has a negative impact on
performance. If all guest OS kernels are trusted, the
:option:`hv.FEATURES.MCE_ON_PSC_DISABLED` option could be set for performance.
performance. If all guest OS kernels are trusted, you can disable the
software workaround (by deselecting the :term:`Enable MCE workaround` option
in the ACRN Configurator tool) for performance.
.. note::
The tips for preempt-RT Linux are mostly applicable to the Linux-based RTOS as well, such as Xenomai.

15
doc/tutorials/using_grub.rst
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@ -18,8 +18,8 @@ The ACRN hypervisor can boot from the `multiboot protocol
with the multiboot protocol, the multiboot2 protocol adds UEFI support.
The multiboot protocol is supported by the ACRN hypervisor natively. The
multiboot2 protocol is supported when :option:`hv.FEATURES.MULTIBOOT2` is
enabled in the scenario configuration. The :option:`hv.FEATURES.MULTIBOOT2` is
multiboot2 protocol is supported when the :term:`Multiboot2` option is
enabled in the scenario configuration. The :term:`Multiboot2` option is
enabled by default. To load the hypervisor with the multiboot protocol, run the
GRUB ``multiboot`` command. To load the hypervisor with the multiboot2 protocol,
run the ``multiboot2`` command. To load a VM kernel or ramdisk, run the
@ -29,13 +29,14 @@ for the multiboot2 protocol.
The ACRN hypervisor binary is built with two formats: ``acrn.32.out`` in
ELF format and ``acrn.bin`` in RAW format. The GRUB ``multiboot``
command supports ELF format only and does not support binary relocation,
even if :option:`hv.FEATURES.RELOC` is set. The GRUB ``multiboot2``
command supports
ELF format when :option:`hv.FEATURES.RELOC` is not set, or RAW format when
:option:`hv.FEATURES.RELOC` is set.
even if the :term:`Hypervisor relocation` option is set in the scenario
configuration. The GRUB ``multiboot2`` command supports
ELF format when the :term:`Hypervisor relocation` option is not set, or RAW
format when the :term:`Hypervisor relocation` option is set.
.. note::
* :option:`hv.FEATURES.RELOC` is set by default, so use ``acrn.32.out`` in
* The :term:`Hypervisor relocation` option is set by default, so use
``acrn.32.out`` in
the multiboot protocol and ``acrn.bin`` in the multiboot2 protocol.
* Per ACPI specification, the RSDP pointer is described in the EFI System

10
doc/tutorials/vuart_configuration.rst
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@ -75,20 +75,14 @@ For the connection:
leave it blank. If the field is blank, the tool provides an address when the
configuration is saved.
.. note::
The release v3.0 ACRN Configurator has an issue where you need to save the
configuration twice to see the generated I/O or BDF address in the vUART
setting. (:acrn-issue:`7831`)
To add another connection, click **+** on the right side of an existing
connection. Or click **-** to delete a connection.
.. note::
The release v3.0 ACRN Configurator assigns COM2 (I/O address ``0x2F8``) to
The release v3.0+ ACRN Configurator assigns COM2 (I/O address ``0x2F8``) to
the S5 feature. A conflict will occur if you assign ``0x2F8`` to another
connection. In our example, we'll use COM3 (I/O address ``0x3F8``).
connection. In our example, we'll use COM3 (I/O address ``0x3E8``).
.. image:: images/configurator-vuartconn01.png
:align: center

6
doc/user-guides/kernel-parameters.rst
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@ -206,12 +206,6 @@ relevant for configuring or debugging ACRN-based systems.
A ``memmap`` parameter is also required to reserve the specified memory
from the guest VM.
If hypervisor relocation is disabled, verify that
:option:`hv.MEMORY.HV_RAM_START` and the hypervisor RAM size computed by
the linker
do not overlap with the hypervisor's reserved buffer space allocated
in the Service VM. Service VM GPA and HPA are a 1:1 mapping.
If hypervisor relocation is enabled, reserve the memory below 256MB,
since the hypervisor could be relocated anywhere between 256MB and 4GB.

13
misc/services/acrn_manager/README.rst
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@ -11,8 +11,6 @@ The ``acrnctl`` tool helps users create, delete, launch, and stop a User
VM (aka UOS). The tool runs under the Service VM, and User VMs should be based
on ``acrn-dm``. The daemon for acrn-manager is `acrnd`_.
Usage
=====
@ -32,7 +30,7 @@ You can see the available ``acrnctl`` commands by running:
Use acrnctl [cmd] help for details
.. note::
You must run ``acrnctl`` with root privileges, and make sure ``acrnd``
You must run ``acrnctl`` with root privileges, and make sure the ``acrnd``
service has been started before running ``acrnctl``.
Here are some usage examples:
@ -54,7 +52,7 @@ container::
# acrnctl add launch_uos.sh -C
.. note:: You can download an :acrn_raw:`example launch_uos.sh script
<devicemodel/samples/nuc/launch_uos.sh>`
<misc/config_tools/data/sample_launch_scripts/nuc/launch_uos.sh>`
that supports the ``-C`` (``run_container`` function) option.
Note that the launch script must only launch one User VM instance.
@ -87,8 +85,9 @@ Use the ``list`` command to display VMs and their state:
Start VM
========
If a VM is in a ``stopped`` state, you can start it with the ``start``
command:
If a VM is in a stopped state, you can start it with the ``start`` command. The
``acrnd`` service automatically loads the launch script under
``/usr/share/acrn/conf/add/`` to boot the VM.
.. code-block:: none
@ -97,7 +96,7 @@ command:
Stop VM
=======
Use the ``stop`` command to stop one or more running VM:
Use the ``stop`` command to stop one or more running VMs:
.. code-block:: none