This bug has been copied from bug #504988 and has been proposed to be backported to 4.8 z-stream (EUS).
Committed in 89.0.25.
reproduced on: Machine: Dell R900 (128G memory) Host : RHEL-Server-5.4 x86_64 PV guest : RHEL-AS-4.8 32bit kernel-xenU-2.6.9-89.EL after update kernel-xenU-2.6.9-89.0.25.EL.i686.rpm, guest can boot up successfully. 32bit Dom0 can't support > 64G memory , so didn't test on it. Change status to "VERIFIED"
Created attachment 410397 [details] reproduce log (kernel-xenU-2.6.9-89.EL)
Created attachment 410399 [details] update kernel and boot up, dmesg log
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. http://rhn.redhat.com/errata/RHSA-2010-0394.html