This patch adds the support for both IO and Memory BARs by expecting
the function allocate_bars() to identify the type of each BAR.
Based on the type, register_mapping() insert the address range on the
appropriate bus (PIO or MMIO).
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The way the function write_reg() was implemented, it was not keeping
the bits supposed to be read-only whenever the guest was writing to one
of those. That's why this commit takes care of protecting those bits,
preventing them from being updated.
The tricky part is about the BARs since we also need to handle the very
specific case where the BAR is being written with all 1's. In that case
we want to return the size of the BAR instead of its address.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
A BAR can be three different types: IO, 32 bits Memory, or 64 bits
Memory. The VMM needs a way to set the right type depending on its
needs.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In order to support use cases that require MSI, the pci crate is
being expanded with the description of an MSI PCI capability
structure through the new MsiCap Rust structure.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit enhances the current msi-x code hosted in the pci crate
in order to be reused by the vfio crate. Specifically, it creates
several useful methods for the MsixCap structure that can simplify
the caller's code.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The QCOW2 format is documented here:
https://git.qemu.org/?p=qemu.git;a=blob;f=docs/interop/qcow2.txt;hb=HEAD
The only difference between v2 and v3 is the addition of some extra
fields into the header in v3 for which there are default values in v2.
This introduces a new unit test for the behaviour but it has been
manually verified by the converting the image from v3 to v2
with a command like:
qemu-img convert -O qcow2 -o compat=0.10 clear-29620-cloud.img clear-29620-cloud.img.v2
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In some situations it is possible for the setting of the capabilities to
fail due to the variable naming of the build artifacts resulting in the
first parameter to setcap being rejected and thus the whole command
failing.
Use xargs -n 1 to ensure that every potential target independently has
its caps set.
Further it was observed that in some situations the binary produced by
cargo test --all --no-run would not be used and instead a new binary
would be produced when the test was run using the second method. This
again would result in test failures as that binary did not have the
desired capabilities set. Therefore build the test binaries with the
same methodology used to run them.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
On the Jenkins build slaves disk I/O is a bottlneck so make /tmp a tmpfs
which removes I/O issues when running lots of VMs at the same time.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Create a struct to handle all the details for the guest under test
including details of network and disks.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Allow replacement of the network details used for the VM. By replacing
those from the file checked into the source tree we can continue to use
the file in the tree for manual testing but adjust the network per-VM to
allow parallel testing.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In the future this will provide the basis for the ability to customise
the cloud-init file per VM.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
By sleeping more earlier this will speed up the tests as the SSH
connection will complete on the first attempt and thus alleviate timeout
and backoff delays.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Use the tempdir crate to create a temporary directory that is deleted
when the structure goes out of scope.
Use this temporary directory for all temporary test files created by the
tests. The cloud init file is still in /tmp as that is created by the
test wrapper code.
This is the first stage towards being able to run the integration tests
in parallel.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The addition of [workspace] to the top level Cargo.toml is necessary to
have the binaries colocated together.
The Cargo.lock files have also been refreshed by the change to the
Cargo.toml.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The type of interrupt_evt has changed along with the addition of an
msix_config member for the virtio device.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rather than relying on shared memory for a temporary file for QCOW
testing instead use tempfile crate to get a temporary file. The vector
cache tests also need a trivial update after the refactor.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
With the adoption for rust-vmm linux-loader crate some small changes
were needed to update the unit tests to reflect this change:
* configure_system now takes an extra parameter
* the e820 entry structure comes from the linux-loader crate
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Some refactoring has taken place since the unit tests were written:
The read/write in BusDevice now take a base address and the interrupt
handling code has changed necessitating the need for a new TestInterrupt
struct.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The older version of pnet had a bug which broke some of the behaviour
that the unit tests relied upon.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add a "--serial" command line that takes as input either "off", "tty"
(default and current behaviour) and "file=/path/to/file".
When "--serial off" is used the serial device is not added to the VM
configuration at all.
Integration tests added that check for interrupts present (or not) and
that when sending to a file the file contains the expected serial
output.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Now that cloud-hypervisor VMM supports virtio-pmem, it can directly
boot a VM from an image exposed as a persistent memory block device.
That's why there is no need to force the --disk option as being
mandatory.
Fixes#90
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Until now, the VMM was only accepting a single instance of virtio-net
device. This commit extends the virtio-net support by allowing several
devices to be created for a single VM.
Fixes#71
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
For every parameter dealing with a size as option, such as memory or
virtio-pmem, the CLI can now parse sizes with the suffixes K, M or G.
Fixes#70
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
PciConfigIo is a legacy pci bus dispatcher, which manages all pci
devices including a pci root bridge. However, it is unnecessary to
design a complex hierarchy which redirects every access by PciRoot.
Since pci root bridge is also a pci device instance, and only contains
easy config space read/write, and PciConfigIo actually acts as a pci bus
to dispatch resource based resolving when VMExit, we re-arrange to make
the pci hierarchy clean.
Signed-off-by: Jing Liu <jing2.liu@linux.intel.com>
When reading from or writing to a PCI BAR to handle a VM exit, we need
to have the BAR address itself to be able to support multiple BARs PCI
devices.
Fixes: #87
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
With the range base for the IO/MMIO vm exit address, a device with
multiple ranges has all the needed information for resolving which of
its range the exit is coming from
Fixes: #87
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
When resolving an IO address to a device, return the range base address,
the offset, and the device itself.
This is needed for devices with multiple IO regions to find out which
region an IO/MMIO exit is coming from.
We also use this change as an opportunity to rename get_device to
resolve as we're doing more than just getting a device.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Partial sync as we're not going to use the the full_addr boolean.
This is based on crosvm commit 44863792.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Until now, the VMM was only accepting a single instance of virtio-pmem
device. This commit extend the virtio-pmem support by allowing several
devices to be created for a single VM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add 2 integration tests to validate virtio-pmem works as expected.
One test takes care of checking the ability to read and write to this
persistent memory from the guest, and validates that the data is
carried over the virtualization boundary.
The other test ensures the VM can be booted directly from an image
that would be passed through virtio-pmem.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This patch plumbs the virtio-pmem device to the VMM. By adding a new
command line option "--pmem", we can now expose some persistent memory
to the guest OS, backed by the provided source.
The point of having such support in cloud-hypervisor is to be able to
share some memory between the host and the guest as DAXable.
One interesting use case is to boot directly from an image passed
through virtio-pmem, instead of going through virtio-blk. This can
allow good performances while avoiding the guest cache, which would
prevent the VM memory footprint from growing too much.
Fixes#68
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit introduces the implementation of the virtio-pmem device
based on the pending proposal of the virtio specification here:
https://lists.oasis-open.org/archives/virtio-dev/201903/msg00083.html
It is also based on the kernel patches coming along with the virtio
proposal: https://lkml.org/lkml/2019/6/12/624
And it is based off of the current crosvm implementation found in
devices/src/virtio/pmem.rs relying on commit
bb340d9a94d48514cbe310d05e1ce539aae31264
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add some documentation specific to virtio-fs and how to perform
filesystem sharing between host and guest with cloud-hypervisor.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Until now, the VMM was only accepting a single instance of a virtio-fs
device. This commit extend the virtio-fs support by allowing several
devices to be created for a single VM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
