Since both Block and vhost_user::Blk implement the Migratable trait, we
can factorize the common part to simplify the code related to the disk
creation.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Extend the validate() function for both DiskConfig and NetConfig so that
we return an error if a vhost-user-block or vhost-user-net device is
expected to be placed behind the virtual IOMMU. Since these devices
don't support this feature, we can't allow iommu to be set to true in
these cases.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Reorganizing the code to leverage the same mechanics implemented for
vfio-user and aimed at supporting sparse memory mappings for a single
region.
Relying on the capabilities returned by the vfio-ioctls crate, we create
a list of sparse areas depending if we get SPARSE_MMAP or MSIX_MAPPABLE
capability, or a single sparse area in case we couldn't find any
capability.
The list of sparse areas is then used to create both the memory mappings
in the Cloud Hypervisor address space and the hypervisor user memory
regions.
This allowed for the simplification of the MmioRegion structure.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This is a cleaner approach to handling the I/O port write to 0x80.
Whilst doing this also use generate the timestamp at the start of the VM
creation. For consistency use the same timestamp for the ARM equivalent.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
We don't use the VmmOps trait directly for manipulating memory in the
core of the VMM as it's really designed for the MSHV crate to handle
instruction decoding. As I plan to make this trait MSHV specific to
allow reduced locking for MMIO and PIO handling when running on KVM this
use should be removed.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Instead of always creating a single large mmap for the MMIO region of a
BAR, we create multiple mmaps for the BARs that need multiple kvm user
memory regions. In this way, we can simplify 'unmap_mmio_regions()' (by
reusing information kept from 'MmioRegion::user_memory_region').
Signed-off-by: Bo Chen <chen.bo@intel.com>
To correctly map MMIO regions to the guest, we will need to wait for valid
MMIO region information which is generated from 'PciDevice::allocate_bars()'
(as a part of 'DeviceManager::add_pci_device()').
Signed-off-by: Bo Chen <chen.bo@intel.com>
To prepare the support of region capabilities, this commit factorizes
the `VFIO_USER_DEVICE_GET_REGION_INFO` operation in its own function. In
this process, it also removes the need of the hard-coded arbitrary value
for `vfio_region_info.argsz` (the maximum size of the reply payload).
Signed-off-by: Bo Chen <chen.bo@intel.com>
Similar to what's being supported for vfio devices, vfio-user devices
may also have BARs that need multiple kvm user memory regions,
e.g. device regions with `VFIO_REGION_INFO_CAP_SPARSE_MMAP`.
Signed-off-by: Bo Chen <chen.bo@intel.com>
For devices that cannot be named by the user use the "__" prefix to
identify them as internal devices. Check that any identifiers provided
in the config do not clash with those internal names. This prevents the
user from creating a disk such as "__serial" which would then cause a
failure in unpredictable manner.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Whenever a device (virtio, vfio, vfio-user or vdpa) is hotplugged, we
must verify the provided identifier is unique, otherwise we must return
an error.
Particularly, this will prevent issues with identifiers for serial,
console, IOAPIC, balloon, rng, watchdog, iommu and gpio since all of
these are hardcoded by the VMM.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
All hotpluggable devices were properly removed from the VmConfig when a
remove-device command was issued, except for the "fs" type. Fix this
lack of support as it is causing the integration tests to fail with the
recent addition of verifying that identifiers are unique.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The device identifiers generated from the DeviceManager were not
guaranteed to be unique since they were not taking the list of
identifiers provided through the configuration.
By returning the list of unique identifiers from the configuration, and
by providing it to the DeviceManager, the generation of new identifiers
can rely both on the DeviceTree and the list of IDs from the
configuration.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This prevents a conflict since the old API socket will not have been
cleaned up (due to the use of SIGKILL.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The socket will safely deleted on shutdown and so it is not necessary to
delete the API socket when starting the HTTP server.
Fixes: #4026
Signed-off-by: LiHui <andrewli@kubesphere.io>
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Start loading the kernel as possible in the VM in a separate thread.
Whilst it is loading other work can be carried out such as initialising
the devices.
The biggest performance improvement is seen with a more complex set of
devices. If using e.g. four virtio-net devices then the time to start the
kernel improves by 20-30ms. With the simplest configuration the
improvement was of the order of 2-3ms.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
