** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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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:
Confirmed
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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