CPU core quantity info is not correct on RHEL5.7+ x64 (XEN) with 6-core CPU

Solution Unverified - Updated -

Issue

  • When booting the x64 Xen kernel on a RHEL5.7+ system with 6-core CPUs, the “cpu cores” field of /proc/cpuinfo always shows 1 on whatever the number of cores is detected on the system.

Environment

  • Red Hat Enterprise Linux 5.7
  • Red Hat Enterprise Linux 5.8
  • Red Hat Enterprise Linux 5.9
  • Xen

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