mirror of
https://gitlab.com/libvirt/libvirt.git
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8981d7925e
This patch adds support and documentation for the branch_misses perf event. Signed-off-by: Nitesh Konkar <nitkon12@linux.vnet.ibm.com>
130 lines
5.0 KiB
XML
130 lines
5.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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</head>
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<body>
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<h1>Releases</h1>
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<p>This is the list of official releases for libvirt, along with an
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overview of the changes introduced by each of them.</p>
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<p>For a more fine-grained view, use the
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<a href="http://libvirt.org/git/?p=libvirt.git;a=log">git log</a>.
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</p>
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<h3>v3.0.0 (<i>unreleased</i>)</h3>
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<ul>
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<li><strong>New features</strong>
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<ul>
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<li>qemu: Support QEMU group I/O throttling<br/>
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Add the capability to allow group I/O throttling via a new
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domain <disk> <iotune> subelement "group_name"
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to allow sharing I/O throttling quota between multiple drives
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</li>
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<li>nss: Introduce <code>libvirt-guest</code><br/>
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New <code>libvirt-guest</code> nss module that translates libvirt
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guest names into IP addresses
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</li>
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</ul>
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</li>
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<li><strong>Improvements</strong>
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<ul>
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<li>perf: Add more perf statistics<br/>
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Add support to get the count of branch instructions executed
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and branch misses by applications running on the platform
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</li>
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</ul>
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</li>
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<li><strong>Bug fixes</strong>
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<ul>
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<li>qemu: Correct GetBlockInfo values<br/>
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For an active domain, correct the physical value provided for
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a raw sparse file backed storage and the allocation value provided
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for a qcow2 file backed storage that hasn't yet been opened on
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the domain
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</li>
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</ul>
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</li>
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</ul>
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<h3>v2.5.0 (2016-12-04)</h3>
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<ul>
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<li><strong>New features</strong>
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<ul>
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<li>shmem: Add support for additional models<br/>
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The shmem device can now utilize QEMU's ivshmem-plain and
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ivshmem-doorbell, more modern versions of ivshmem
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</li>
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<li>vbox: Add VirtualBox 5.1 support
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</li>
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<li>libssh: New transport<br/>
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The new libssh transport allows one to connect to a running
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libvirtd via SSH, using the libssh library; for example:
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<tt>qemu+libssh://<i>server</i>/system</tt>
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</li>
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<li>vhost-scsi: Add support scsi_host hostdev passthrough<br/>
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Add the capability to pass through a scsi_host HBA and the
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associated LUNs to the guest
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</li>
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<li>qemu: Users can now enable debug logging for native gluster
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volumes in qemu using the "gluster_debug_level" option in qemu.conf
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</li>
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<li>memory hotplug: Slot numbers for memory devices are now
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automatically allocated and thus persistent. In addition slot numbers
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can be specified without providing a base address, which simplifies
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user configuration
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</li>
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<li>qemu: Express devices will be placed on PCIe bus by default<br/>
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For machine types that use a PCI Express root bus
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(e.g. x86_64/Q35 and aarch64/virt), any unaddressed PCI
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device that is an Express device (all virtio-1.0 devices,
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e1000e, nec-xhci, vfio assigned devices) will be placed on
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an Express controller (i.e. a pcie-root-port) instead of a
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legacy PCI controller (i.e. pci-bridge) with the root ports
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added as needed
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</li>
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</ul>
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</li>
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<li><strong>Improvements</strong>
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<ul>
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<li>docs: Better documentation for migration APIs and flags
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</li>
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<li>vbox: Address thread safety issues
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</li>
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<li>virsh: Add support for passing an alternative persistent XML
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to migrate command
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</li>
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<li>vhostuser: Allow hotplug of multiqueue devices
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</li>
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<li>NEWS: Switch to an improved format<br/>
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List user-visible changes instead of single commits for a better
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high-level overview of differences between libvirt releases
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</li>
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<li>website: Modernize layout and branding<br/>
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The libvirt website looked very cluttered and outdated; it has now
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been completely overhauled, resulting in a design that's better
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organized and more pleasant to look at
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</li>
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</ul>
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</li>
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<li><strong>Bug fixes</strong>
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<ul>
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<li>vz: Fix migration in P2P mode
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</li>
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<li>Forbid newline character in names of some libvirt objects
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</li>
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<li>Fix compilation on macOS
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</li>
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</ul>
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</li>
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</ul>
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<p>Releases earlier than v2.5.0 detailed their changes using a different
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format and as such are excluded from the list above.
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You can read about those older release, starting from those made in
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<a href="news-2016.html">2016</a>.
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</p>
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</body>
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</html>
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