Issued:
2010-03-19
Updated:
2010-03-19

RHBA-2010:0158 - kvm bug fix update

Synopsis

kvm bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated kvm packages that resolved two issues are now available.

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. KVM can run multiple unmodified, virtualized guest Windows and Linux operating systems.

These updated packages fix the following bug:

  • high loads could cause Microsoft Windows 7 32 bit guests to crash with a Blue Screen error that contained the "HAL_RTC_IRQF_WILL_NOT_CLEAR" error code. The updated package resolves this issue and Windows 7 32 bit guests should not crash under high loads.

All KVM users should upgrade to these updated packages, which contain backported patches to resolve these issues. Note that the procedure in the Solution section must be performed before this update takes effect.

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 This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

To enable the updated kvm package, follow this procedure:

  1. Stop all KVM virtualized guests.

  2. Either reboot the hypervisor machine, or, as the superuser: a. find the running modules with the "lsmod {kvm,ksm,kvm-intel,kvm-amd}" command. b. remove the running kvm modules with the "modprobe -r {kvm,ksm,kvm-intel,kvm-amd}" command. b. reload the modules using "modprobe {kvm,ksm}" and, "modprobe kvm-intel" or "modprobe kvm-amd" depending on the system architecture.

  3. Restart required KVM virtualized guests.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Extended Update Support5.4x86_64
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Server5x86_64

Updated Packages

  • kvm-tools-83-105.el5_4.28.x86_64.rpm
  • kvm-83-105.el5_4.28.src.rpm
  • kmod-kvm-83-105.el5_4.28.x86_64.rpm
  • kvm-83-105.el5_4.28.x86_64.rpm
  • kvm-qemu-img-83-105.el5_4.28.x86_64.rpm

Fixes

CVEs

(none)

References

(none)

Additional information