Bug 200125

Summary:	x86 guest creation fails
Product:	[Fedora] Fedora	Reporter:	Jeremy Katz <katzj>
Component:	kernel	Assignee:	Xen Maintainance List <xen-maint>
Status:	CLOSED RAWHIDE	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	markmc, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2006-10-28 05:40:19 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:	200124

Description Jeremy Katz 2006-07-25 16:29:51 UTC

Creation of guests (both PV and FV) fails with all 2.6.18-rcX based Xen kernels
(2.6.17-1.2439.fc6xen is the one currently on my test box)

The guest creation gives an "Error creating guest OS".  Looking in xm dmesg, the
reason is related to
  (XEN) DOM0: (file=mm.c, line=822) PAE L3 3rd slot is empty
  (XEN) DOM0: (file=mm.c, line=1053) Failure in alloc_l3_table: entry 4
  (XEN) DOM0: (file=mm.c, line=1732) Error while validating mfn e1d4 (pfn 2b5bf)
for type 60000000: caf=80000002 taf=60000001
  (XEN) DOM0: (file=mm.c, line=2004) Error while pinning mfn e1d4

Comment 1 Jeremy Katz 2006-07-25 18:05:24 UTC

Building a HV from unstable with pae=y debug=n verbose=n doesn't help this
(although there isn't helpful spew about the problem anymore and I had to hack
up libxenguest to figure out why the guest creation was failing)

Comment 2 Mark McLoughlin 2006-07-27 10:15:19 UTC

See #200004 - the patch there could well fix this too, there's nothing arch
specific about the problem causing #200004

Comment 3 Jeremy Katz 2006-07-27 19:48:54 UTC

This is better with 2462