Bug 739823

Summary: 2.6.18-238.1.1.el5 or newer won't boot under Xen HVM due to linux-2.6-virt-nmi-don-t-print-nmi-stuck-messages-on-guests.patch [rhel-5.7.z]
Product: Red Hat Enterprise Linux 5 Reporter: RHEL Program Management <pm-rhel>
Component: kernel-xenAssignee: Phillip Lougher <plougher>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: high Docs Contact:
Priority: urgent    
Version: 5.5CC: ajb, cww, dhoward, drjones, dzickus, honza801, jkt, jzheng, leiwang, lersek, mrezanin, pbonzini, pcao, pm-eus, qguan, qwan, sforsber, xen-maint
Target Milestone: rcKeywords: Regression, ZStream
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: 2.6.18-274.6.1.el5 Doc Type: Bug Fix
Doc Text:
A previously applied patch to help clean-up a failed nmi_watchdog check by disabling various registers caused single-vcpu Xen HVM guests to become unresponsive during boot when the host CPU was an Intel Xeon Processor E5405 or an Intel Xeon Processor E5420, and the VM configuration did not have the apic = 1 parameter set. With this update, NMI_NONE is the default watchdog on AMD64 HVM guests, thus, fixing this issue.
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-10-20 17:31:26 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 707966    
Bug Blocks:    

Description RHEL Program Management 2011-09-20 07:20:17 UTC
This bug has been copied from bug #707966 and has been proposed
to be backported to 5.7 z-stream (EUS).

Comment 5 Don Howard 2011-09-26 20:09:37 UTC
Patch(es) for this issue have been committed in kernel 2.6.18-274.6.1.el5.

Comment 7 Qin Guan 2011-09-29 09:17:45 UTC
Verify this problem with guest kernel 2.6.18-274.6.1.el5.

Host kernel: 2.6.18-274.el5xen
Host CPU model: Intel Xeon E5405

Steps:
1. Reproduce this problem with x86_64 guest:
 guest kernel: 2.6.18-274.5.1.el5
 guest conf: apic=0

2. Verify this problem with x86_64 guest:
 guest kernel: 2.6.18-274.6.1.el5
 guest conf: works both with apic=0 and apic=1

Repeat above steps after updating host kernel to 2.6.18-274.6.1.el5xen.

Also test 32b guest with normal and pae kernel, this problem does not exists(even with kernel 2.6.18-274.5.1.el5).

Comment 8 errata-xmlrpc 2011-10-20 17:31:26 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2011-1386.html

Comment 9 Martin Prpič 2011-10-27 09:19:22 UTC
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
A previously applied patch to help clean-up a failed nmi_watchdog check by disabling various registers caused single-vcpu Xen HVM guests to become unresponsive during boot when the host CPU was an Intel Xeon Processor E5405 or an Intel Xeon Processor E5420, and the VM configuration did not have the apic = 1 parameter set. With this update, NMI_NONE is the default watchdog on AMD64 HVM guests, thus, fixing this issue.