Huge PCI BAR support needed for Ubuntu 14.10
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Tim Gardner | ||
Utopic |
Fix Released
|
Medium
|
Tim Gardner |
Bug Description
== Comment: #0 - Brian Hart <email address hidden> - 2014-08-04 17:26:34 ==
---Problem Description---
Our project requires Huge BAR Support (i.e. support for PCI BAR spaces > 1G) in Ubuntu 14.10. Guo and Gavin are working on the kernel changes (and Sapphire/OPAL changes?) and have already submitted patches. The patches did not make the 3.16 cut-off, so will need to be back-ported to the 14.10 kernel.
I believe the patches are the set described by:
https:/
Contact Information = Brian Hart (<email address hidden>), Dave Marquardt (<email address hidden>)
---uname output---
Linux tul115p1 3.16.0-6-generic #11-Ubuntu SMP Mon Jul 28 02:00:45 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux
---Additional Hardware Info---
Problem is seen with PCI adapters that request > 1G of BAR space. We've seen it with GPUs that request a BAR1 of size 16G.
Machine Type = 8286-42A
---Debugger---
A debugger is not configured
---Steps to Reproduce---
Add a PCI adapter which requests huge BAR space in the system. The huge BARs will not be assigned and the adapter will likely not initialize.
Stack trace output:
no
Oops output:
no
System Dump Info:
The system is not configured to capture a system dump.
*Additional Instructions for Brian Hart (<email address hidden>), Dave Marquardt (<email address hidden>):
-Attach sysctl -a output output to the bug.
tags: | added: architecture-ppc64le bugnameltc-114190 severity-critical targetmilestone-inin1410 |
affects: | ubuntu → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
status: | Incomplete → Confirmed |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
tags: | added: ppc64el |
Changed in linux (Ubuntu): | |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
Changed in linux (Ubuntu Utopic): | |
assignee: | Canonical Kernel Team (canonical-kernel-team) → Tim Gardner (timg-tpi) |
status: | Confirmed → Fix Committed |
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