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Description of problem:
If a RHEL KVM guest is currently run on a POWER8NVL host, it ends up in POWER7 compatibility mode (according to /proc/cpuinfo). This happens because the guests currently do not announce support for POWER8NVL directly (see BZ 1340445 for details), and because QEMU does not support the PowerISA 2.07 compatibility mode in the "ibm,client-architecture-support" firmware call. So the guests end up in PowerISA 2.06 mode, which equals to POWER7.
While BZ 1340445 tracks the modifications to the guest kernel, this ticket here is used to track the fixes for QEMU to properly provide the PowerISA 2.07 compatibility mode for guests, too.
Version-Release number of selected component (if applicable):
qemu-kvm-rhev-2.6.0-4.el7.ppc64le
How reproducible:
100%
Steps to Reproduce:
1. Boot a RHEL 7.2 on a POWER8NVL KVM host
2. Check /proc/cpuinfo.
Actual results:
If /proc/cpuinfo contains POWER7, it is the wrong setting.
Expected results:
/proc/cpuinfo should say something about POWER8 instead.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2016-2673.html