Comment 12 for bug 1312199

Reviewed: https://review.openstack.org/96090
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=6b86a61fee15ce1237303fab2f7896f8c3bcad47
Submitter: Jenkins
Branch: master

commit 6b86a61fee15ce1237303fab2f7896f8c3bcad47
Author: Attila Fazekas <email address hidden>
Date: Wed May 28 09:19:29 2014 +0200

    Use no_timer_check with soft-qemu

    The Linux kernel timer check not working properly
    when the hypervisor's thread preempted by the host CPU scheduler.

    The timer check is automatically disabled with other types
    of hypervisors including the hardware accelerated kvm,
    but timer_check is not disabled when qemu used without hardware acceleration.

    This issue is frequently mischaracterized as an SSH connectivity issue and
    causes rechecks and occasional boot failures.

    This change adds no_timer_check kernel parameter when we are using
    uec images with qemu.

    Closes-Bug: #1312199
    Change-Id: I3cfdfe9048fe219fc12cdac8a399b496f237e55e