We can integrate the kernel loading into the VM start method.
The VM start flow is then: Vm::new() -> vm.start(), which feels more
natural.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Convert Path to PathBuf and remove the associated lifetime.
Now we can remove the VmConfig associated lifetime.
Fixes#298
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since vhost-user-blk use same error definition with vhost-user-net,
those errors need define to common usage.
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Probe for the size of the host physical address range and use that to
establish the address range for the VM. This removes the limitation on
the size of the VM RAM and gives more space for the devices.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
After the 32-bit gap the memory is shared between the devices and the
RAM. Ensure that the ACPI tables correctly indicate where the RAM ends
and the device area starts by patching the precompiled tables. We get
the following valid output now from the PCI bus probing (8GiB guest)
[ 0.317757] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 0.319035] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 0.320215] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 0.321431] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfffff window]
[ 0.322613] pci_bus 0000:00: resource 8 [mem 0x240000000-0xfffffffff window]
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rerrange "use" statements and make rename variables and fields to
indicate they might be unused.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This removes the register_devices() function with all that functionality
spread across the places where the devices are created.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Mark exit_evt with an underscore it may be unused (it is ignored if the
"acpi" feature is not turned on.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add (non-default) support for using MMIO for virtio devices. This can be
tested by:
cargo build --no-default-features --features "mmio"
All necessary options will be included injected into the kernel
commandline.
Fixes: #243
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rather than calling it at the very start of the VM execution (i.e. when
the VCPUs are created) do it as part of the DeviceManager creation.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Create the virtio devices independently of adding them to the PCI bus.
Instead accrue the devices in a vector and add them to the bus en-masse.
This will allow the virtio device creation to be used independently of
PCI based transport.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Rather than sending a signal to the signal handler used for handling
SIGWINCH calls instead use the crate provided termination method. This
also unregisters the signal handler which also means that there won't be
a leaked signal handler remaining.
This leaked signal handler is what was causing a failure to cleanup up
the thread on subsequent requests breaking two reboots in a row.
Fixes: #252
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
With ACPI disabled there is no way to support both reset and shutdown so
make the VMM exit if the VM is rebootet (via i8042 or triple-fault
reset.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit relies on the new vsock::unix module to create the backend
that will be used from the virtio-vsock device.
The concept of backend is interesting here as it would allow for a vhost
kernel backend to be plugged if that was needed someday.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on previous patch introducing the new flag "--vsock", this commit
creates a new virtio-vsock device based on the presence of this flag.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The new flag vsock is meant to be used in order to create a VM with a
virtio-vsock device attached to it. Two parameters are needed with this
device, "cid" representing the guest context ID, and "sock" representing
the UNIX socket path which can be accessed from the host.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The default number of MSI-X vector allocated was 2, which is the minimum
defined by the virtio specification. The reason for this minimum is that
virtio needs at least one interrupt to signal that configuration changed
and at least one to specify something happened regarding the virtqueues.
But this current implementation is not optimal because our VMM supports
as many MSI-X vectors as allowed by the MSI-X specification (2048 max).
For that reason, the current patch relies on the number of virtqueues
needed by the virtio device to determine the right amount of MSI-X
vectors needed. It's important not to forget the dedicated vector for
any configuration change too.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Refactor out DeviceManager into it's own file. This is part of a bigger
effort to reduce complexity in the vm.rs file but will also allow future
separation to allow making PCI support optional.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The command "cargo build --no-default-features" does not recursively
disable the default features across the workspace. Instead add an acpi
feature at the top-level, making it default, and then make that feature
conditional on all the crate acpi features.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
For virtio-fs and virtio-pmem regions of memory are manually mapped into
the address space of the VMM. In order to cleanly reboot we need to
unmap those regions.
Fixes: #223
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Do this by using the same mechanism as the vCPU threads by sending a
signal to the thread. As this is the same mechanism reuse the same code
and rename the "vcpus" member to "threads" to indicate this represents
both the vCPU threads and also the signal handler thread.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Put the ACPI support behind a feature and ensure that the code compiles
without that feature by adding an extra build to Travis.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
As part of the cleanup of the VM shutdown all the vCPU threads. This is
achieved by toggling a shared atomic boolean variable which is checked
in the vCPU loop. To trigger the vCPU code to look at this boolean it is
necessary to send a signal to the vCPU which will interrupt the running
KVM_RUN ioctl.
Fixes: #229
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Being able to reboot requires us to identify all the resources we are
leaking and cleaning those up before we can enable reboot. For now if
the user requests a reboot then shutdown instead.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Sadly only the first few characters of the thread name is preserved so
use a shorter name for the vCPU thread for now. Also give the signal
handling thread a name.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add an I/O port "device" to handle requests from the kernel to shutdown
or trigger a reboot, borrowing an I/O used for ACPI on the Q35 platform.
The details of this I/O port are included in the FADT
(SLEEP_STATUS_REG/SLEEP_CONTROL_REG/RESET_REG) with the details of the
value to write in the FADT for reset (RESET_VALUE) and in the DSDT for
shutdown (S5 -> 0x05)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add a 2nd EventFd to the VM to control resetting (rebooting) the VM this
supplements the EventFd used for managing shutdown of the VM.
The default behaviour on i8042 or triple-fault based reset is currently
unchanged i.e. it will trigger a shutdown.
In order to support restarting the VM it was necessary to make start()
function take a reference to the config.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Only add the ACPI PNP device for the COM1 serial port if it is not
turned off with "--serial off"
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Currently when the VCPU thread exits on an error the VMM continues to
run with no way of shutting down the main thread.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add a revision 2 RSDP table only supporting an XSDT along with support
for creating generic SDT based tables.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This patch factorizes the existing virtio-fs code by relying onto the
common code part of the vhost_user module in the vm-virtio crate.
In details, it factorizes the vhost-user setup, and reuses the error
types defined by the module instead of defining its own types.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
