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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.
a0a2c8ab73
CFPC (Cache Flush on Privilege Change) is one of the capabilities added to QEMU to mitigate Spectre vulnerabilities in Power chips. It was implemented in QEMU 2.12 by commit 6898aed77f46. This capability is still used today due to differences in how the host setup (hardware and firmware/kernel) can handle this mitigation. Its default value also varies with the pseries machine version of the time. There's also certain OSes, like AIX, that might not support the default value of the pseries machine the guest uses. Exposing this in the Libvirt XML as a feature will allow users to tune CFPC values in a cleaner way, instead of hacking parameters in <qemu:commandline> elements. Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Reviewed-by: Michal Privoznik <mprivozn@redhat.com> |
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examples | ||
include/libvirt | ||
m4 | ||
po | ||
scripts | ||
src | ||
tests | ||
tools | ||
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.gitignore | ||
.gitlab-ci.yml | ||
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.gitpublish | ||
.mailmap | ||
.travis.yml | ||
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ABOUT-NLS | ||
AUTHORS.in | ||
autogen.sh | ||
ChangeLog | ||
config-post.h | ||
configure.ac | ||
CONTRIBUTING.rst | ||
COPYING | ||
COPYING.LESSER | ||
gitdm.config | ||
GNUmakefile | ||
libvirt-admin.pc.in | ||
libvirt-lxc.pc.in | ||
libvirt-qemu.pc.in | ||
libvirt.pc.in | ||
libvirt.spec.in | ||
Makefile.am | ||
Makefile.nonreentrant | ||
mingw-libvirt.spec.in | ||
README | ||
README.rst | ||
run.in |
.. image:: https://gitlab.com/libvirt/libvirt/badges/master/pipeline.svg :target: https://gitlab.com/libvirt/libvirt/pipelines :alt: GitLab CI Build Status .. image:: https://travis-ci.org/libvirt/libvirt.svg :target: https://travis-ci.org/libvirt/libvirt :alt: Travis CI Build Status .. image:: https://bestpractices.coreinfrastructure.org/projects/355/badge :target: https://bestpractices.coreinfrastructure.org/projects/355 :alt: CII Best Practices ============================== 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: https://libvirt.org 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 ============ Libvirt uses the GNU Autotools build system, so in general can be built and installed with the usual commands, however, we mandate to have the build directory different than the source directory. For example, to build in a manner that is suitable for installing as root, use: :: $ mkdir build && cd build $ ../configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var $ make $ sudo make install While to build & install as an unprivileged user :: $ mkdir build && cd build $ ../configure --prefix=$HOME/usr $ make $ make install The libvirt code relies on a large number of 3rd party libraries. These will be detected during execution of the ``configure`` script and a summary printed which lists any missing (optional) dependencies. 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: https://libvirt.org/contact.html