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[Bug 1352640] patches backported from
------- Comment on attachment From brenohl@xxxxxxxxxx 2014-08-12 16:33 EDT-------
These are the patches backported over 9deefe4 UBUNTU: Ubuntu-3.16.0-7.12
** Attachment added: "patches backported from"
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Huge PCI BAR support needed for Ubuntu 14.10
Status in “linux” package in Ubuntu:
== Comment: #0 - Brian Hart <hartb@xxxxxxxxxx> - 2014-08-04 17:26:34 ==
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:
Contact Information = Brian Hart (hartb@xxxxxxxxxx), Dave Marquardt (davemarq@xxxxxxxxxx)
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
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:
System Dump Info:
The system is not configured to capture a system dump.
*Additional Instructions for Brian Hart (hartb@xxxxxxxxxx), Dave Marquardt (davemarq@xxxxxxxxxx):
-Attach sysctl -a output output to the bug.
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