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Bug 645745

Summary:	Xen fails to boot: sequencer: The MCA was NOT corrected. A cold boot is required.
Product:	Red Hat Enterprise Linux 5	Reporter:	Alexander Todorov <atodorov>
Component:	kernel-xen	Assignee:	Xen Maintainance List <xen-maint>
Status:	CLOSED DUPLICATE	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	high	Docs Contact:
Priority:	high
Version:	5.6	CC:	mrezanin, pbonzini, xen-maint
Target Milestone:	rc
Target Release:	---
Hardware:	ia64
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-10-22 12:15:57 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	638638

Description Alexander Todorov 2010-10-22 11:10:32 UTC

Description of problem:
hp-rx8640-03.rhts.eng.bos.redhat.com fails to boot Xen with the following message:

(XEN) Xen command line: BOOT_IMAGE=scsi0:EFI\redhat\xen.gz-2.6.18-227.el5  
(XEN) xen image pstart: 0x4000000, xenheap pend: 0x8000000
(XEN) Xen patching physical address access by offset: 0x0
(XEN) find_memory: efi_memmap_walk returns max_page=221feff9
(XEN) Before xen_heap_start: f0000000041e0c80
(XEN) After xen_heap_start: f000000008624000
(XEN) warning: skipping physical page 0
(XEN) Init boot pages: 0x4000 -> 0x4000000.
(XEN) Init boot pages: 0x8000000 -> 0x1fffc000.
(XEN) Init boot pages: 0x70020000000 -> 0x705fb000000.
(XEN) Init boot pages: 0x78000000000 -> 0x787fc000000.
(XEN) Init boot pages: 0x80000000000 -> 0x807fc000000.
(XEN) Init boot pages: 0x88000000000 -> 0x887f9b61000.
(XEN) Init boot pages: 0x887fa602fd0 -> 0x887fa994018.
(XEN) Init boot pages: 0x887fa994078 -> 0x887fa997fb6.
(XEN) Init boot pages: 0x887fa997fea -> 0x887fa99b000.
(XEN) Init boot pages: 0x887faf97d09 -> 0x887faf9e018.
(XEN) Init boot pages: 0x887faf9edf8 -> 0x887fbd9c000.
(XEN) Init boot pages: 0x887fbe80000 -> 0x887fbfe4000.
(XEN) System RAM: 122606MB (125549552kB)
(XEN) size of virtual frame_table: 306736kB
(XEN) virtual machine to physical table: f3fffffeef008038 size: 61488kB
(XEN) max_page: 0x221feff9
(XEN) Xen heap: 17592186044409MB (18014398509475696kB)
(XEN) Cannot handle page request order 1!
(XEN) Xen BUG at page_alloc.c:343
(XEN) FIXME: implement ia64 dump_execution_state()
 MCA event occurred ....

 Unable to handoff: OS_MCA handler not registered.

sequencer: The MCA was NOT corrected. A cold boot is required.
sequencer: Resetting...



After waiting for some 5 o rmore minutes the system rebooted by itself and hit the same error again.


Version-Release number of selected component (if applicable):
kernel-xen-2.6.18-227
xen-3.0.3-117

How reproducible:
Always on that system

Steps to Reproduce:
1. Install latest 5.6 with kernel-xen and reboot
2.
3.
  
Actual results:
System fails to boot.

Expected results:
System boots correctly.

Additional info:

Comment 1 Alexander Todorov 2010-10-22 11:18:26 UTC

No luck after power off, power on.

Comment 2 Paolo Bonzini 2010-10-22 12:15:57 UTC

You need xenheap_megabytes=128 to boot on 128GB ia64 machines, see technotes in the duplicate bug.

*** This bug has been marked as a duplicate of bug 521865 ***