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Message #74322
[Bug 1352640] Comment bridged from LTC Bugzilla
------- Comment From hellerda@xxxxxxxxxx 2014-08-05 15:18 EDT-------
(In reply to comment #4)
> Thank you for taking the time to report this bug and helping to make Ubuntu
> better. It seems that your bug report is not filed about a specific source
> package though, rather it is just filed against Ubuntu in general. It is
> important that bug reports be filed about source packages so that people
> interested in the package can find the bugs about it. You can find some
> hints about determining what package your bug might be about at
> https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help
> in the #ubuntu-bugs irc channel on Freenode.
>
Thanks. It was not clear what package to select since there is none named "kernel". I see now, per above like, the correct package for kernel is "linux".
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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 <hartb@xxxxxxxxxx> - 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 (hartb@xxxxxxxxxx), Dave Marquardt (davemarq@xxxxxxxxxx)
---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 (hartb@xxxxxxxxxx), Dave Marquardt (davemarq@xxxxxxxxxx):
-Attach sysctl -a output output to the bug.
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