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.
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Jiri Denemark 5b4a6adb5c qemu: Use more data for comparing CPUs
With QEMU older than 2.9.0 libvirt uses CPUID instruction to determine
what CPU features are supported on the host. This was later used when
checking compatibility of guest CPUs. Since QEMU 2.9.0 we ask QEMU for
the host CPU data. But the two methods we use usually provide disjoint
sets of CPU features because QEMU/KVM does not support all features
provided by the host CPU and on the other hand it can enable some
feature even if the host CPU does not support them.

So if there is a domain which requires a CPU features disabled by
QEMU/KVM, libvirt will refuse to start it with QEMU > 2.9.0 as its guest
CPU is incompatible with the host CPU data we got from QEMU. But such
domain would happily start on older QEMU (of course, the features would
be missing the guest CPU). To fix this regression, we need to combine
both CPU feature sets when checking guest CPU compatibility.

https://bugzilla.redhat.com/show_bug.cgi?id=1439933

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
2017-04-19 16:36:38 +02:00
.gnulib@94386a1366 maint: update to latest gnulib 2017-01-10 12:54:54 -06:00
build-aux annotate all mocked functions with noinline 2017-04-19 10:51:51 +01:00
daemon Split out -Wframe-larger-than warning from WARN_CLFAGS 2017-04-06 12:29:35 +02:00
docs news: update for Hyper-V 2012+ support. 2017-04-08 15:57:43 +02:00
examples lib: Introduce event for tracking disk backing file write threshold 2017-03-27 09:29:57 +02:00
gnulib build: drop hack for old mingw ssize_t 2016-07-12 08:57:13 -06:00
include/libvirt lib: Add API for setting the threshold size for VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD 2017-03-27 10:09:49 +02:00
m4 virt-storage-rbd: fix typo s/RDB/RBD/ in configure check 2017-04-19 15:01:17 +01:00
po network: Introduce virnetworkobj 2017-04-18 20:25:18 -04:00
src qemu: Use more data for comparing CPUs 2017-04-19 16:36:38 +02:00
tests qemu: Pass migratable host CPU model to virCPUUpdate 2017-04-19 16:36:38 +02:00
tools virsh: report errors in virshInit() 2017-04-19 11:42:00 +01:00
.ctags
.dir-locals.el
.gitignore Properly ignore files in build-aux directory 2017-04-07 10:08:33 +02:00
.gitmodules
.mailmap maint: update .mailmap for recent contributions 2015-03-20 06:17:55 -06:00
.travis.yml Add travis build configuration 2017-04-19 10:51:51 +01:00
AUTHORS.in Change maintainers list 2016-02-12 13:10:05 +03:00
autogen.sh maint: improve usage of autogen's --no-git 2015-02-06 11:35:29 -07:00
bootstrap maint: update to latest gnulib 2017-01-10 12:54:54 -06:00
bootstrap.conf hvsupport: use a regex instead of XML::XPath 2016-07-19 18:42:44 +02:00
cfg.mk annotate all mocked functions with noinline 2017-04-19 10:51:51 +01:00
ChangeLog-old Fix typos in src/* 2014-04-21 16:49:08 -06:00
config-post.h m4/virt-devmapper: use LIBVIRT_CHECK_(PKG|LIB) 2016-12-21 15:39:39 +01:00
configure.ac Post-release version bump to 3.3.0 2017-04-03 08:32:02 +02:00
COPYING
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
HACKING Document preferred naming conventions 2017-03-10 11:28:56 +00:00
libvirt-admin.pc.in Add libvirt-admin library 2015-06-16 13:46:20 +02:00
libvirt-lxc.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt-qemu.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.pc.in Add pkg-config files for libvirt-qemu & libvirt-lxc 2014-06-23 16:17:27 +01:00
libvirt.spec.in spec: Avoid RPM verification errors on nwfilter XMLs 2017-04-19 11:36:06 +02:00
Makefile.am Drop autobuild.sh 2017-04-13 19:03:46 +02:00
Makefile.nonreentrant cfg.mk: use a single regex for all non-reentrant functions 2016-06-15 15:00:56 +02:00
mingw-libvirt.spec.in test: fix screenshot API impl 2016-12-08 10:57:32 +00:00
README
README-hacking docs: update README-hacking 2014-05-06 16:20:24 -06:00
run.in Add PKG_CONFIG_PATH to run.in script. 2014-06-26 14:32:35 +01:00
TODO

         LibVirt : simple API for virtualization

  Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.

Daniel Veillard <veillard@redhat.com>