Bug 1004743 - XSAVE migration format not compatible between RHEL6 and RHEL7
XSAVE migration format not compatible between RHEL6 and RHEL7
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
: rc
: ---
Assigned To: Eduardo Habkost
Virtualization Bugs
: Reopened
Depends On: 1016736
Blocks: 889670 915399
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Reported: 2013-09-05 07:50 EDT by Paolo Bonzini
Modified: 2014-06-17 23:35 EDT (History)
9 users (show)

See Also:
Fixed In Version: qemu-kvm-1.5.3-11.el7
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 1004773 1016736 (view as bug list)
Last Closed: 2014-06-13 05:36:33 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Paolo Bonzini 2013-09-05 07:50:57 EDT
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 11:19:04 EDT
*** Bug 997702 has been marked as a duplicate of this bug. ***
Comment 3 huiqingding 2013-09-10 22:04:29 EDT
I duplicate this bug to bug 997702, as talked to Paolo:


*** This bug has been marked as a duplicate of bug 997702 ***
Comment 4 Paolo Bonzini 2013-10-10 05:44:08 EDT
This affects all models, not just those listed.
Comment 5 Eduardo Habkost 2013-10-17 10:44:00 EDT
(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 03:20:48 EDT
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 03:56:21 EDT
Fix included in qemu-kvm-1.5.3-11.el7
Comment 10 FuXiangChun 2013-11-11 03:10:12 EST
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 05:36:33 EDT
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.

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