[Bug 795717] Re: 32bit rhel and centos 5.(5|6) hangs on boot on natty

gdahlman 795717 at bugs.launchpad.net
Thu Oct 13 00:33:50 UTC 2011


Sorry after installing Serge's test kernel I did not have the time to
test the proposed version but his did fix the issue.

Unfortunately it appears that the Ubuntu kernel in 11.04 also has this
issue.

                if (tsc_delta < 0)
                        mark_tsc_unstable("KVM discovered backwards TSC");
                if (check_tsc_unstable()) {
                        kvm_x86_ops->adjust_tsc_offset(vcpu, -tsc_delta);
                        vcpu->arch.tsc_catchup = 1;
                }
                kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);
                if (vcpu->cpu != cpu)
                        kvm_migrate_timers(vcpu);
                vcpu->cpu = cpu;
        }
}


I have made the same diff change I added above and the issue goes away.

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Title:
  32bit rhel and centos 5.(5|6) hangs on boot on natty

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