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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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Laine Stump abb7a4bd6b qemu: set/use proper pciConnectFlags during hotplug 
Before now, all the qemu hotplug functions assumed that all devices to
be hotplugged were legacy PCI endpoint devices
(VIR_PCI_CONNECT_TYPE_PCI_DEVICE). This worked out "okay", because all
devices *are* legacy PCI endpoint devices on x86/440fx machinetypes,
and hotplug didn't work properly on machinetypes using PCIe anyway
(hotplugging onto a legacy PCI slot doesn't work, and until commit
b87703cf any attempt to manually specify a PCIe address for a
hotplugged device would be erroneously rejected).

This patch makes all qemu hotplug operations honor the pciConnectFlags
set by the single all-knowing function
qemuDomainDeviceCalculatePCIConnectFlags(). This is done in 3 steps,
but in a single commit since we would have to touch the other points
at each step anyway:

1) add a flags argument to the hypervisor-agnostic
virDomainPCIAddressEnsureAddr() (previously it hardcoded
..._PCI_DEVICE)

2) add a new qemu-specific function qemuDomainEnsurePCIAddress() which
gets the correct pciConnectFlags for the device from
qemuDomainDeviceConnectFlags(), then calls
virDomainPCIAddressEnsureAddr().

3) in qemu_hotplug.c replace all calls to
virDomainPCIAddressEnsureAddr() with calls to
qemuDomainEnsurePCIAddress()

So in effect, we're putting a "shim" on top of all calls to
virDomainPCIAddressEnsureAddr() that sets the right pciConnectFlags.
2016-11-14 14:09:10 -05:00
.gnulib@5ddd9d713d build: update to latest gnulib 2016-11-12 14:51:52 -06:00
build-aux prohibit-duplicate-header: print file name and line 2016-06-23 12:48:40 +02:00
daemon daemon: Fix crash during daemon cleanup 2016-10-27 15:58:47 -04:00
docs storage.html.in: Kill useless spaces in <pre/> 2016-11-14 11:03:34 +01:00
examples examples: Distribute all systemtap scripts. 2016-10-10 15:02:38 +08:00
gnulib build: drop hack for old mingw ssize_t 2016-07-12 08:57:13 -06:00
include/libvirt qemu: Add length for bps/iops throttling parameters to driver 2016-10-25 17:20:13 -04:00
m4 wireshark: Use ${exec_prefix} instead of ${prefix} 2016-11-07 10:16:06 +01:00
po datatypes: Introduce some admin-related close callback handling helpers 2016-11-14 10:18:56 +01:00
src qemu: set/use proper pciConnectFlags during hotplug 2016-11-14 14:09:10 -05:00
tests qemu: Generate memory device aliases according to slot number 2016-11-10 17:36:55 +01:00
tools tools: Replace vshPrint with vshPrintExtra on places we forgot about 2016-11-14 12:14:11 +01:00
.ctags maint: Make ctags work out of the box 2013-07-18 08:47:21 +02:00
.dir-locals.el build: avoid tabs that failed syntax-check 2012-09-06 09:43:46 -06:00
.gitignore tests: Self test virt-admin 2016-09-14 13:18:07 +02:00
.gitmodules make .gnulib a submodule 2009-07-08 16:17:51 +02:00
.mailmap maint: update .mailmap for recent contributions 2015-03-20 06:17:55 -06:00
AUTHORS.in Change maintainers list 2016-02-12 13:10:05 +03:00
autobuild.sh maint: Switch to xz compressed PAX release archives 2016-06-15 18:53:34 +02:00
autogen.sh maint: improve usage of autogen's --no-git 2015-02-06 11:35:29 -07:00
bootstrap build: update to latest gnulib 2016-11-12 14:51:52 -06:00
bootstrap.conf hvsupport: use a regex instead of XML::XPath 2016-07-19 18:42:44 +02:00
cfg.mk docs: rewrite content on front page to be more useful 2016-11-11 12:15:05 +00:00
ChangeLog-old Fix typos in src/* 2014-04-21 16:49:08 -06:00
config-post.h config-post.h:fix a typo 2016-09-21 09:35:51 +02:00
configure.ac configure: remove fallback check for parted 2016-11-10 16:00:02 +00:00
COPYING maint: follow recommended practice for using LGPL 2013-05-20 14:15:21 -06:00
COPYING.LESSER maint: Remove control characters from LGPL license file 2015-09-25 09:16:24 +02:00
HACKING docs: remove outdated suggestion to make patches with "diff -urp"/"git diff" 2016-07-01 12:41:10 -04:00
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 docs: redo style of front page 2016-11-11 12:15:03 +00:00
Makefile.am dist: Speed up distribution compression 2016-06-30 16:05:24 +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 docs: redo style of front page 2016-11-11 12:15:03 +00:00
README Correct typos in the documentation (Atsushi SAKAI) 2008-01-24 10:15:13 +00:00
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 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>