Ubuntu18.10 - Bring ocxl driver in 18.10 to same level as 18.04.1

[bugproxy]

== Comment: #0 - Frederic Barrat <email address hidden> - 2018-08-31 02:41:58 ==
---Problem Description---
bring ocxl driver in 18.10 to same level as in 18.04.1

---uname output---
Linux zaiuslp14 4.15.0-24-generic #26-Ubuntu SMP Wed Jun 13 08:43:33 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux

---Additional Hardware Info---
opencapi adapter needed to use ocxl driver

Machine Type = power9

---Debugger---
A debugger is not configured

---Steps to Reproduce---

Contact Information = <email address hidden>

Stack trace output:
 no

Oops output:
 no

System Dump Info:
  The system is not configured to capture a system dump.

*Additional Instructions for <email address hidden>:
-Attach sysctl -a output output to the bug.

== Comment: #1 - Frederic Barrat <email address hidden> - 2018-08-31 02:48:24 ==
An important fix for the ocxl driver (opencapi driver for POWER9) is missing in kernel 4.18. It was merged during the 4.19 merge window. The fix is already in 18.04.1, so it needs to be added to the 18.10 kernel to avoid regression.

The commit ID is:
d497ebf5fb3a026c0817f8c96cde578787f24093
    ocxl: Fix page fault handler in case of fault on dying process

Could you add it to the kernel for 18.10? Thanks

[Joseph Salisbury (jsalisbury)]

The requested commit is in 18.10 as of kernel version: Ubuntu-4.18.0-7

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the proposed kernel and post back if it resolves this bug?
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2018-09-11 12:57 EDT-------
I've tested the ocxl driver found in proposed ( 4.18.0-7-generic ) and things look good.
Thanks!

[Andrew Cloke (andrew-cloke)]

Apologies, incorrectly marked the root series ("Linux (Ubuntu)"), representing Disco, as Fix Released, while this patch is only in Disco -proposed.