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Bug 1004743

Summary:	XSAVE migration format not compatible between RHEL6 and RHEL7
Product:	Red Hat Enterprise Linux 7	Reporter:	Paolo Bonzini <pbonzini>
Component:	qemu-kvm	Assignee:	Eduardo Habkost <ehabkost>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.0	CC:	acathrow, hhuang, huding, juzhang, michen, pbonzini, qzhang, virt-maint, xfu
Target Milestone:	rc	Keywords:	Reopened
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-1.5.3-11.el7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1004773 1016736 (view as bug list)		Environment:
Last Closed:	2014-06-13 09:36:33 UTC	Type:	Bug
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:	1016736
Bug Blocks:	889670, 915399

Description Paolo Bonzini 2013-09-05 11:50:57 UTC

VMState format for XSAVE data is incompatible between RHEL6 and RHEL7.

RHEL6 used a subsection, RHEL7 bumped the version number.  As a result, SandyBridge, Haswell, Opteron_G4 and Opteron_G5 CPU models cannot be migrated to RHEL7.

Comment 2 Paolo Bonzini 2013-09-06 15:19:04 UTC

*** Bug 997702 has been marked as a duplicate of this bug. ***

Comment 3 huiqingding 2013-09-11 02:04:29 UTC

I duplicate this bug to bug 997702, as talked to Paolo:

https://bugzilla.redhat.com/show_bug.cgi?id=997702#c11

*** This bug has been marked as a duplicate of bug 997702 ***

Comment 4 Paolo Bonzini 2013-10-10 09:44:08 UTC

This affects all models, not just those listed.

Comment 5 Eduardo Habkost 2013-10-17 14:44:00 UTC

(In reply to Paolo Bonzini from comment #4)
> This affects all models, not just those listed.

Does it? If xsave is not enabled on CPUID, the xsave section will be skipped.

Comment 7 Paolo Bonzini 2013-10-18 07:20:48 UTC

See bug 1016736 comment 4.  But it is possible that for non-XSAVE models the problem is the ACPI one.

Comment 8 Miroslav Rezanina 2013-10-31 07:56:21 UTC

Fix included in qemu-kvm-1.5.3-11.el7

Comment 10 FuXiangChun 2013-11-11 08:10:12 UTC

Verify this bug with qemu-kvm-1.5.3-18.el7.x86_64.rpm

Testd four cpu model(include xsave flag)
1. Opteron_G5 2. Opteron_G4 3. Hasswell 4. SandyBridge

Tested seven cpu models(not include xsave flag)

AMD cpu model: Opteron_G1,Opteron_G2 and Opteron_G3
Intel cpu model:Westmere,Nehalem,Penryn and Conroe

All cpu model above works well when migrating from rhel6.5 to rhel7.0 host.


Base on this result above. This bug is fixed.

Comment 12 Ludek Smid 2014-06-13 09:36:33 UTC

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.