[RHEL6.1 Beta]KVM guest stall during installing RHEL5.x i386 .

Issue

• We tried to install RHEL5.6 (i386) KVM guest on RHEL6.1 Snapshot1 host OS , but the KVM guest stalled during installation .
• This problem did not happen on RHEL6.0 a regression.
• We found that this ploblem occurs only in following condition .
  • 1,This problem only happened when install a KVM Guest of RHEL5.x i386 .
    • It did not happen when install a RHEL5.x x86_64 OS or RHEL4.8 .
  • 2,The KVM guest OS which is going to be installed with more than one CPU .
    • It did not happen when the KVM guest has only a CPU .