Comment 2 for bug 1670481

Revision history for this message
Jon Grimm (jgrimm) wrote : Re: [Bug 1670481] [NEW] Backport "populate PCI DT in reverse order" patch

Yeah, already saw that go through. That being said, we'd probably reject
unless accepted upstream.

On Mon, Mar 6, 2017 at 2:31 PM, Michael Hohnbaum <
<email address hidden>> wrote:

> Jon,
>
> A QEMU backport request. Please have the Server team evaluate.
>
> Thanks.
>
> Michael
>
>
> On 03/06/2017 12:19 PM, Launchpad Bug Tracker wrote:
>
>> bugproxy (bugproxy) has assigned this bug to you for Ubuntu:
>>
>> == Comment: #0 - MIKHAIL S. MEDVEDEV <email address hidden> - 2017-03-03
>> 14:21:43 ==
>> ---Problem Description---
>> On ppc64el qemu the order of device scanning was recently changed,
>> causing device names to be in reverse order compared to e.g. x86. This is
>> creating a need for all sorts of work arounds to make the code that assumes
>> certain order of devices to work on Power.
>>
>> The fix has been proposed and it appears it would go into Qemu 2.9, see
>> [1]. It might be awhile until qemu 2.9 gets widely adopted as default. It
>> would be beneficial if the fix can be backported to an earlier versions of
>> Qemu.
>> [1] http://patchwork.ozlabs.org/patch/731061/
>>
>> ---uname output---
>> Linux devstack-xenial-ppc64-84615 4.8.0-39-generic #42~16.04.1-Ubuntu SMP
>> Mon Feb 20 15:09:38 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux
>> Machine Type = 8247-21L
>> ---Debugger---
>> A debugger is not configured
>> ---Steps to Reproduce---
>>
>> Contact Information = Mikhail Medvedev <email address hidden> / Tiago
>> Rodrigues de Mello <email address hidden>
>>
>> ** Affects: ubuntu
>> Importance: Undecided
>> Assignee: Taco Screen team (taco-screen-team)
>> Status: New
>>
>>
>> ** Tags: architecture-ppc64le bugnameltc-152251 severity-medium
>> targetmilestone-inin16042
>>
>
> --
> Michael Hohnbaum
> OIL Program Manager
> Power (ppc64el) Development Project Manager
> Canonical, Ltd.
>
>

--
Jon Grimm
Engineering Manager, Ubuntu Server
Canonical Ltd