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Subject: [Bug 213155] possible kernel regression when running 11.0-RELEASE on
 KVM on AMD Opterons
Date: Sun, 02 Oct 2016 07:37:37 +0000
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X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 11.0-STABLE
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: Affects Some People
X-Bugzilla-Who: martin@waschbuesch.de
X-Bugzilla-Status: New
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D213155

            Bug ID: 213155
           Summary: possible kernel regression when running 11.0-RELEASE
                    on KVM on AMD Opterons
           Product: Base System
           Version: 11.0-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: martin@waschbuesch.de
                CC: freebsd-amd64@FreeBSD.org
                CC: freebsd-amd64@FreeBSD.org

Similarly to the issues described in=20

https://forums.freebsd.org/threads/36761/
and
https://forums.freebsd.org/threads/47409/

I am unable to boot a 11.0-RELEASE guest on KVM unless I disable some CPU
features in KVM. Specifically, I have to set
     -cpu Opteron_G3
instead of
     -cpu Opteron_G5
or
     -cpu host
in order to be able to boot the VM.

If needed, I can provide access to such a VM for testing & debugging.

--=20
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