In vir-host-validate we do two checks related to IOMMU: 1) hardware support, and 2) kernel support. While users are usually interested in the latter, the former also makes sense. And for the former (hardware support) we have this huge if-else block for nearly every architecture, except ARM. Now, IOMMU is called SMMU in ARM world, and while there's certainly a definitive way of detecting SMMU support (e.g. via dumping some registers in asm), we can work around this - just like we do for Intel and AMD - and check for an ACPI table presence. In ARM world, there's I/O Remapping Table (IORT) which describes SMMU capabilities on given host and is exposed in sysfs (regardless of arm_smmu module). Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2178885 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
Libvirt API for virtualization
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the website:
License
The libvirt C API is distributed under the terms of GNU Lesser General Public License, version 2.1 (or later). Some parts of the code that are not part of the C library may have the more restrictive GNU General Public License, version 2.0 (or later). See the files COPYING.LESSER
and COPYING
for full license terms & conditions.
Installation
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
The libvirt project has two primary mailing lists:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: