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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.

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

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 ***

This affects all models, not just those listed.

(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.

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

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

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.

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.