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== Comment: #0 - Mauricio Faria De Oliveira <> - 2017-05-17 
09:22:57 ==
Backport request for 16.04.3 HWE (via 17.04).

Commit list:

6b3edefefa67  powerpc/powernv: POWER9 support for msgsnd/doorbell IPI 
a5adf282461f  powerpc/64s: Avoid a branch for ppc_msgsnd 
b87ac0218355  powerpc: Introduce msgsnd/doorbell barrier primitives 
b866cc2199d6  powerpc: Change the doorbell IPI calling convention 
9b7ff0c6586b  powerpc/64s: Add SCV FSCR bit for ISA v3.0 
794464f4dea0  powerpc/64s: Add msgp facility unavailable log string  

Contacts (in CC list):
- Breno Leitao <>

== Comment: #1 - Mauricio Faria De Oliveira <> - 2017-05-17 
09:25:16 ==
Gustavo has been working on this request, and has identified other commits 

He has a working patched kernel and is performing stress test for
validating it before submission.

== Comment: #2 - Gustavo Luiz Ferreira Walbon <> - 2017-05-18 
15:48:52 ==
I will submit a patch set in the kernel-team mailing list.

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
         Status: New

** Tags: architecture-ppc64le bugnameltc-154777 severity-medium 
Ubuntu16.04.03: POWER9 XIVE: msgsnd/doorbell IPI support (backport)
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