RHBA-2019:0209 - Bug Fix Advisory

Topic

An updated qemu-kvm-rhev packages that fix several bugs are now available for Red Hat Virtualization Host 7.

Description

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

This update fixes the following bug:

• Previously, Windows guest use too much cpu during idle state due to missing timer device. This updates re-enable hyper-v enlightment so the Windows behave correctly during idle state (BZ1638835)

Users of qemu-kvm are advised to upgrade to these updated packages. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

Solution

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

For details on how to apply this update, refer to:

https://access.redhat.com/articles/2974891

Affected Products

• Red Hat Virtualization Manager 4.2 x86_64
• Red Hat Virtualization 4 for RHEL 7 x86_64
• Red Hat Virtualization for IBM Power LE 4 for RHEL 7 ppc64le

Fixes

• BZ - 1638835 - High Host CPU load for Windows 10 Guests (Update 1803) when idle [rhel-7.6.z]
• BZ - 1647719 - boot guest with q35+vIOMMU+ device assignment, qemu crash when return assigned network devices from vfio driver to ixgbe in guest [rhel-7.6.z]
• BZ - 1650175 - block-commit can't be used with -blockdev [rhel-7.6.z]
• BZ - 1654963 - Qemu core dump when do migration after hot plugging a backend image with 'blockdev-add'(without the frontend) [rhel-7.6.z]

CVEs

(none)

References

(none)