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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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e8d6c28955
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Daniel P. Berrange e8d6c28955 Support VCPU hotplug in QEMU guests 
QEMU has a monitor command 'set_cpu' which allows a specific
CPU to be toggled between online& offline state. libvirt CPU
hotplug does not work in terms of individual indexes CPUs.
Thus to support this, we iteratively toggle the online state
when the total number of vCPUs is adjusted via libvirt

NB, currently untested since QEMU segvs when running this!

* src/qemu/qemu_driver.c: Toggle online state for CPUs when
  doing hotplug
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
  src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_json.h,
  src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h: Add
  monitor API for toggling a CPU's online status via 'set_cpu
2010-03-04 13:19:29 +00:00
.gnulib@80cd995cdc build: update gnulib submodule to latest 2010-02-26 17:14:01 +01:00
build-aux maint: sort .gitignore 2010-02-23 21:32:04 +01:00
daemon Remote driver implementation for the virDomainAbortJob APi 2010-03-02 16:23:31 +00:00
docs maint: convert leading TABs in *.rng files to equivalent spaces 2010-03-01 20:19:20 +01:00
examples maint: avoid excess parens in STREQ 2010-02-01 17:21:26 +01:00
include Introduce public API for cancelling async domain jobs 2010-03-02 16:23:31 +00:00
m4 remove all .cvsignore files 2009-07-08 16:17:51 +02:00
po Update of indian, spanish and russian translations 2010-03-01 12:14:23 +01:00
proxy Fix compile error in Xen proxy from virConnectPtr changes 2010-02-10 12:51:41 +00:00
python Introduce public API for domain async job handling 2010-03-02 16:22:30 +00:00
src Support VCPU hotplug in QEMU guests 2010-03-04 13:19:29 +00:00
tests Allow configurable timezones with QEMU 2010-03-01 18:43:04 +00:00
tools virsh: silence compiler warning 2010-03-03 10:17:31 +01:00
.gitignore maint: sort .gitignore 2010-02-23 21:32:04 +01:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.hgignore Add qemuhelptest to .*ignore files 2009-06-16 14:06:48 +00:00
.x-sc_avoid_ctype_macros exempt gnulib from ctype-macros prohibition 2008-10-28 17:36:31 +00:00
.x-sc_avoid_if_before_free avoid a "make syntax-check" failure 2009-07-09 20:00:37 +02:00
.x-sc_avoid_write Fully asynchronous monitor I/O processing 2009-11-10 13:27:18 +00:00
.x-sc_m4_quote_check syntax-check: enable more checks 2009-02-03 13:08:36 +00:00
.x-sc_prohibit_asprintf add .x-sc_prohibit_asprintf 2008-12-23 13:40:42 +00:00
.x-sc_prohibit_gethostby Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_prohibit_gethostname Add a new syntax-check rule for gethostname. 2009-10-26 10:34:27 +01:00
.x-sc_prohibit_have_config_h maint: sync from coreutils 2009-01-29 18:06:19 +00:00
.x-sc_prohibit_HAVE_MBRTOWC maint: sync from coreutils 2009-01-29 18:06:19 +00:00
.x-sc_prohibit_nonreentrant Tighten up nonreentrant syntax-check. 2009-10-26 10:33:42 +01:00
.x-sc_prohibit_readlink Add a rule to check for uses of readlink. 2010-01-22 09:42:35 -05:00
.x-sc_prohibit_strcmp exempt gnulib/ from "make syntax-check" strcmp prohibition 2008-05-14 21:18:27 +00:00
.x-sc_prohibit_strcmp_and_strncmp Ignore docs/ directory for strcmp() syntax check 2009-11-23 11:58:13 +00:00
.x-sc_prohibit_strncpy Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_prohibit_VIR_ERR_NO_MEMORY Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_require_config_h Various syntax-check fixes. 2009-10-26 10:34:05 +01:00
.x-sc_require_config_h_first Misc syntax-check fixes 2009-09-21 14:41:47 +01:00
.x-sc_trailing_blank build: exempt *.ico files from the trailing blank check 2008-10-16 13:28:07 +00:00
acinclude.m4 remove all trailing blank lines 2009-07-16 15:06:42 +02:00
AUTHORS Add Jiri Denemark <jdenemar@redhat.com> to commiters 2010-01-19 14:41:19 +01:00
autobuild.sh Enable ESX driver build on Mingw32 2009-07-31 16:15:51 +01:00
autogen.sh build: make git submodule checking more reliable 2010-02-25 13:35:03 +01:00
bootstrap maint: relax git minimum version 2010-02-24 14:29:27 -05:00
bootstrap.conf maint: relax git minimum version 2010-02-24 14:29:27 -05:00
cfg.mk maint: disallow TAB-in-indentation also in *.rng files 2010-03-01 20:19:20 +01:00
ChangeLog-old generate ChangeLog from git logs into distribution tarball 2009-07-08 16:17:51 +02:00
configure.ac Revert fs pool formatting 2010-02-26 03:33:27 -05:00
COPYING.LIB remove all trailing blank lines 2009-07-16 15:06:42 +02:00
HACKING Remove conn parameter from virReportOOMError 2010-02-09 01:04:54 +01:00
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 Revert fs pool formatting 2010-02-26 03:33:27 -05:00
Makefile.am build: avoid non-srcdir "make distcheck" failures (srcdir vs wildcard) 2010-02-25 10:50:18 +01:00
Makefile.nonreentrant syntax-check: enable prohibit_nonreentrant 2009-02-05 16:28:41 +00:00
mingw32-libvirt.spec.in Make pki_check.sh into an installed & supported tool 2009-09-21 14:41:46 +01:00
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 Remove all trailing blanks; turn on the rule to detect them. 2008-02-05 19:27:37 +00:00

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>