[Bug 213155] possible kernel regression when running 11.0-RELEASE on KVM on AMD Opterons

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213155

Mark Linimon  changed:

   What|Removed |Added

   Keywords||regression
 CC|freebsd-amd64@FreeBSD.org   |

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[Bug 213155] possible kernel regression when running 11.0-RELEASE on KVM on AMD Opterons

[bugzilla-noreply]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213155

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-b...@freebsd.org
  Reporter: mar...@waschbuesch.de
CC: freebsd-amd64@FreeBSD.org
CC: freebsd-amd64@FreeBSD.org

Similarly to the issues described in 

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.

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