This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1352640
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1352640
Title:
Huge PCI BAR support needed for Ubuntu 14.10
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
== Comment: #0 - Brian Hart <ha...@us.ibm.com> - 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://lists.ozlabs.org/pipermail/linuxppc-dev/2014-July/119170.html
Contact Information = Brian Hart (ha...@us.ibm.com), Dave Marquardt
(davem...@us.ibm.com)
---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 (ha...@us.ibm.com), Dave Marquardt
(davem...@us.ibm.com):
-Attach sysctl -a output output to the bug.
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