This bugzilla has Keywords: Regression.  

Since no regressions are allowed between releases, 
it is also being proposed as a blocker for this release.  

Please resolve ASAP.

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 the 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.

http://rhn.redhat.com/errata/RHSA-2007-0939.html

Our machine has problem when accessing phisical address of 38 bit .
can I get the patch which is the only one to solve this problem?
because we have already modified the old kernel  kernel-2.6.9-34.EL.src.rpm.It is too difficult for us to maintain two different kernel.
If I can solve the problem by only apply one patch (), we can spend less time on it.
Now I decompress the by execute:
rpm -ivh kernel-2.6.9-55.0.12.EL.src.rpm
and get a lot of patches , but I don't know which one can solve the problem.

I know it has something to do with cpuinfo_x86
so I type

grep cpuinfo -l -r kernel-2.6.9-55.0.12.EL

kernel-2.6.9-55.0.12.EL/linux-2.6.9-x8664-core.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.8-4g4g-backout.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-dualcore.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-xen-rebase.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-xen-newfiles.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-x86-enable-apic-up.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-x86-share-cachedescriptors.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-powernow-k8.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-acpi-powernow-fix.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-i2c.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-ia64-sn2-update.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-x86-disable-ht.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-x8664-mce.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.13-ia64-multi-core.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.0-exec-shield.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-x86-cpuid4.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-proc-devices.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-x86_64-phys_proc_id-only-when-initialised.patch
kernel-2.6.9-55.0.12.EL/linux-2.6.9-x86-enhanced-speedstep.patch


grep cpuinfo -l -r kernel-2.6.9-34.EL/

kernel-2.6.9-34.EL/linux-2.6.8-4g4g-backout.patch
kernel-2.6.9-34.EL/linux-2.6.9-x86-share-cachedescriptors.patch
kernel-2.6.9-34.EL/linux-2.6.9-powernow-k8.patch
kernel-2.6.9-34.EL/linux-2.6.9-intel-dualcore.patch
kernel-2.6.9-34.EL/linux-2.6.9-ia64-sn2-update.patch
kernel-2.6.9-34.EL/linux-2.6.9-x86-disable-ht.patch
kernel-2.6.9-34.EL/linux-2.6.13-ia64-multi-core.patch
kernel-2.6.9-34.EL/linux-2.6.0-exec-shield.patch
kernel-2.6.9-34.EL/linux-2.6.9-x86-cpuid4.patch
kernel-2.6.9-34.EL/linux-2.6.9-x86_64-phys_proc_id-only-when-initialised.patch
kernel-2.6.9-34.EL/linux-2.6.9-x86-enhanced-speedstep.patch


but the number of file is still very large.
can anyone give some advice?
thank you very much!