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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.
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Paolo Bonzini b66d1bef14 qemu: parse and create -cpu ...,-kvmclock 
QEMU supports a bunch of CPUID features that are tied to the kvm CPUID
nodes rather than the processor's.  They are "kvmclock",
"kvm_nopiodelay", "kvm_mmu", "kvm_asyncpf".  These are not known to
libvirt and their CPUID leaf might move if (for example) the Hyper-V
extensions are enabled. Hence their handling would anyway require some
special-casing.

However, among these the most useful is kvmclock; an additional
"property" of this feature is that a <timer> element is a better model
than a CPUID feature.  Although, creating part of the -cpu command-line
from something other than the <cpu> XML element introduces some
ugliness.

Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-01-27 16:51:50 +01:00
.gnulib@dd6b2d751b build: fix bootstrap on fresh clone 2012-01-16 11:23:34 -07:00
daemon build: allow for 64-bit pid in daemon 2012-01-26 16:47:04 -07:00
docs conf: add kvmclock timer 2012-01-27 16:51:50 +01:00
examples Permission change for systemtap examples. 2012-01-17 15:42:01 -07:00
gnulib build: update to latest gnulib 2012-01-12 15:47:54 -07:00
include storage: Support different wiping algorithms 2012-01-26 13:59:30 +01:00
m4 build: silence some compiler warnings from gnulib 2012-01-19 13:14:10 -07:00
po Rename hash.h and hash.c to virhash.h and virhash.c 2012-01-26 14:11:13 +00:00
python API: make declaration of _LAST enum values conditional 2012-01-20 16:05:51 -07:00
src qemu: parse and create -cpu ...,-kvmclock 2012-01-27 16:51:50 +01:00
tests qemu: parse and create -cpu ...,-kvmclock 2012-01-27 16:51:50 +01:00
tools storage: Support different wiping algorithms 2012-01-26 13:59:30 +01:00
.dir-locals.el maint: let emacs avoid tabs in rng files 2011-08-13 08:56:26 -06:00
.gitignore hash: minor touchups 2012-01-26 15:27:10 -07:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: use mailmap, not AUTHORS, for secondary addresses 2011-11-11 08:56:19 -07:00
AUTHORS Update VIRT_CONTROL audit record with pid. 2012-01-26 16:49:02 -07:00
autobuild.sh Disable python explicitly in mingw32 autobuild 2011-12-19 13:44:18 +00:00
autogen.sh build: allow for local gnulib diffs 2011-11-09 09:03:33 -07:00
bootstrap build: fix bootstrap on fresh clone 2012-01-16 11:23:34 -07:00
bootstrap.conf Replace hashing algorithm with murmurhash 2012-01-26 14:18:53 +00:00
cfg.mk Remove tabs from libvirt_public.syms & enforce it 2012-01-26 15:03:43 +00:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac storage: Support different wiping algorithms 2012-01-26 13:59:30 +01:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Document STREQ_NULLABLE and STRNEQ_NULLABLE 2011-10-06 16:50:38 +02:00
libvirt.pc.in * libvirt.pc.in: applied patch from Daniel Berrange to fix --cflags 2006-03-24 13:18:12 +00:00
libvirt.spec.in Remove dmidecode dependancy outside PC arches 2012-01-18 00:22:17 +08:00
Makefile.am maint: add missing copyright notices 2011-07-28 15:01:17 -06:00
Makefile.nonreentrant Ban use of all inet_* functions 2010-10-22 11:59:23 +01:00
mingw32-libvirt.spec.in spec: make it easier to autoreconf when building rpm 2011-12-08 09:49:50 -07:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
README-hacking maint: relax git minimum version 2010-02-24 14:29:27 -05:00
TODO Update todo list file to point at bugzilla/website 2010-10-13 16:45:26 +01:00

README 

         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>