Xen Virtualization: Hypervisor (aka VMM aka Microkernel)
Xen is a virtual machine monitor for x86 that supports execution of
multiple guest operating systems with unprecedented levels of
performance and resource isolation.
This package contains the Xen Hypervisor. (tm)
Modern computers are sufficiently powerful to use virtualization to
present the illusion of many smaller virtual machines (VMs), each
running a separate operating system instance. Successful partitioning
of a machine to support the concurrent execution of multiple operating
systems poses several challenges. Firstly, virtual machines must be
isolated from one another: It is not acceptable for the execution of
one to adversely affect the performance of another. This is
particularly true when virtual machines are owned by mutually
untrusting users. Secondly, it is necessary to support a variety of
different operating systems to accommodate the heterogeneity of popular
applications. Thirdly, the performance overhead introduced by
virtualization should be small.
Xen uses a technique called paravirtualization: The guest OS is
modified, mainly to enhance performance.
The Xen hypervisor (microkernel) does not provide device drivers for
your hardware (except for CPU and memory). This job is left to the
kernel that's running in domain 0. Thus the domain 0 kernel is
privileged; it has full hardware access. It's started immediately after
Xen starts up. Other domains have no access to the hardware; instead
they use virtual interfaces that are provided by Xen (with the help of
the domain 0 kernel).
Xen does support booting other Operating Systems; ports of NetBSD
(Christian Limpach), FreeBSD (Kip Macy), and Plan 9 (Ron Minnich)
exist. A port of Windows XP was developed for an earlier version of
Xen, but is not available for release due to license restrictions.
In addition to this package you need to install the kernel-xen and
xen-tools to use Xen. Xen 3 also supports running unmodified guests
using full virtualization, if appropriate hardware is present. Install
xen-tools-ioemu if you want to use this.
[Hypervisor is a trademark of IBM]
- Developed at Virtualization
- Sources inherited from project openSUSE:Factory
-
11
derived packages
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Source Files
Revision 162 (latest revision is 346)
(to fix build with linux-3.6) - pygrub: always append --args 25941-pygrub_always_append_--args.patch - use BuildRequires: gcc46 only in sles11sp2 or 12.1 to fix build in 11.4 - Upstream patches from Jan 25833-32on64-bogus-pt_base-adjust.patch 25835-adjust-rcu-lock-domain.patch 25836-VT-d-S3-MSI-resume.patch 25850-tmem-xsa-15-1.patch 25851-tmem-xsa-15-2.patch 25852-tmem-xsa-15-3.patch 25853-tmem-xsa-15-4.patch 25854-tmem-xsa-15-5.patch 25855-tmem-xsa-15-6.patch 25856-tmem-xsa-15-7.patch 25857-tmem-xsa-15-8.patch 25858-tmem-xsa-15-9.patch 25859-tmem-missing-break.patch 25860-tmem-cleanup.patch 25861-x86-early-fixmap.patch 25862-sercon-non-com.patch 25863-sercon-ehci-dbgp.patch 25864-sercon-unused.patch 25866-sercon-ns16550-pci-irq.patch 25867-sercon-ns16550-parse.patch 25874-x86-EFI-chain-cfg.patch 25909-xenpm-consistent.patch - Fixed the 32bit build. - Update to Xen 4.2.0 FCS c/s 25844 - unmodified_drivers: handle IRQF_SAMPLE_RANDOM, it was removed in 3.6-rc1 - bnc#778105 - first XEN-PV VM fails to spawn xend: Increase wait time for disk to appear in host bootloader Modified existing xen-domUloader.diff - Disable the snapshot patches. Snapshot only supported the qcow2 image format which was poorly implemented qemu 0.10.2. Snapshot support may be restored in the future when the newer upstream qemu is used by Xen. - bnc#776995 - attaching scsi control luns with pvscsi - xend/pvscsi: fix passing of SCSI control LUNs xen-bug776995-pvscsi-no-devname.patch - xend/pvscsi: fix usage of persistant device names for SCSI devices xen-bug776995-pvscsi-persistent-names.patch - xend/pvscsi: update sysfs parser for Linux 3.0 xen-bug776995-pvscsi-sysfs-parser.patch - Update to Xen 4.2.0 RC3+ c/s 25779 - Update to Xen 4.2.0 RC2+ c/s 25765
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