------- Comment From [email protected] 2018-03-26 08:50 EDT-------
Gustavo is already involved on the email thread that originated this; assigning 
to him.

In the thread Paul Mackerras also mentions others fixes. Pasting here
for reference.

"""
I went through all the KVM PPC patches since 4.15 and checked whether each one 
was in Ubuntu as of the Ubuntu-4.15.0-12.13 tag. The ones that aren't in there 
that we want are:

* Allow HPT guests on P9 DD2.2 without requiring indep_threads_mode=N.

6964e6a4e489 KVM: PPC: Book3S HV: Do SLB load/unload with guest LPCR value 
loaded
cda4a1473313 KVM: PPC: Book3S HV: Fix duplication of host SLB entries (needed 
once 6964e6a4e489 is in)
00608e1f007e KVM: PPC: Book3S HV: Allow HPT and radix on the same core for 
POWER9 v2.2

* Memory management fixes.

c3856aeb2940 KVM: PPC: Book3S HV: Fix handling of large pages in radix page 
fault handler
debd574f4195 KVM: PPC: Book3S HV: Fix VRMA initialization with 2MB or 1GB 
memory backing

* Emulation of VMX loads and stores for MMIO.

09f984961c13 KVM: PPC: Book3S: Add MMIO emulation for VMX instructions
6df3877fc962 KVM: PPC: Book3S: Fix compile error that occurs with some gcc 
versions (needed once 09f984961c13 is in)

* Other important fixes.

05f2bb0313a2 KVM: PPC: Book3S HV: Fix handling of secondary HPTEG in HPT 
resizing code
790a9df5fbef KVM: PPC: Book3S HV: Make HPT resizing work on POWER9
a8b48a4dccea KVM: PPC: Book3S HV: Fix trap number return from 
__kvmppc_vcore_entry
Paul.
"""

** Changed in: ubuntu
     Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage 
(ubuntu-power-triage)

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https://bugs.launchpad.net/bugs/1758910

Title:
  Important Kernel fixes to be backported for Power9 (kvm)

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