RHBA-2010:0524 - Bug Fix Advisory

Topic

Updated libvirt packages that resolve an issue are now available.

Description

The libvirt library is a C API for managing and interacting with the
virtualization capabilities of Linux and other operating systems. In
addition, libvirt provides tools for remotely managing virtualized systems.

These updated libvirt packages fix the following bug:

• previously, libvirt set CPU affinity only for the Virtual CPU (vCPU)

threads, leaving the main QEMU thread and any I/O threads unpinned and able
to use any CPU on the host. This update corrects this: libvirt now sets CPU
affinity for the whole QEMU process and all its threads before memory
allocation occurs. (BZ#599570)

All libvirt users are advised to upgrade to these updated packages, which
resolve this issue.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 i386

Fixes

• BZ - 599570 - libvirt needs to pin all Qemu threads

CVEs

(none)

References

(none)