After we fix the build issue reported on bug #533059, we can make KVM use the new native smp_call_function_many() and smp_call_function_single() functions (added for bug #526043) on RHEL-5.5, instead of using compat versions of those functions.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.