[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

We were able to install this qemu from the PPA on different machines. We
didn't find any regression, and DDW worked as expected.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

Filing FFe while waiting on final testing by IBM on ppc64el.

For release team:
Rationale: Request from partner for improved performance with KVM/QMU GPU 
passthru on ppc64el arch.
All patches from upstream 2.7, backports provided by IBM above. 
Regression tests from qa-regression-testing tested by hallyn on amd64.  
PPA available: https://launchpad.net/~jgrimm/+archive/ubuntu/qemu-1541902
  (amd64, i386, arm64, ppc64el)

Seeking FFe.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

** Changed in: qemu (Ubuntu)
 Assignee: Taco Screen team (taco-screen-team) => Jon Grimm (jgrimm)

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

qa-regression-testing tests reported successful against my PPA by
hallyn.

Waiting on reporter to test of functionality working as expected as I do
not have hardware to test.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

Package built successfully across arm64, ppc64el, amd64, and i386.

As I do not have the required hardware to test the specific use-case,
would you be able to kindly test the GPU passthru?

Please document the steps and tests done.   Thank you.

To get the fixed package:
 sudo add-apt-repository ppa:jgrimm/qemu-1541902
 sudo apt update
 sudo apt dist-upgrade

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

Patch set applied clean, thanks.  
Uploaded to PPA here for testing (not finished building yet), to allow for some 
testing.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

Always helps to post the URL. 
https://launchpad.net/~jgrimm/+archive/ubuntu/qemu-1541902

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

Hi Ryan,
Leonardo will provide the details regarding GPU pass-through here soon.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Ryan Harper]

Can you provide some details on how to test the GPU pass-through?  I'm
working on the SRU text for this and would like to include those
details.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[bugproxy]

** Tags added: bugnameltc-136627 severity-high

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

Tested on IBM and the package in the PPA works fine. Thanks

We can migrate it from the PPA to the main archive.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

Just an update:

We are still working to validate and debug the PPA fixes...

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Re: [Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Ryan Harper]

On Mon, Jun 13, 2016 at 8:06 AM, Breno Leitão <1541...@bugs.launchpad.net>
wrote:

> Hi Serge,
>
> yes, no ppc64el binaries so far:
>

Working on it.  Reconfigured PPA to enable PPC64le, and re-triggered the
package build.
I'll follow up and make sure we see the ppc64le build show up.

Ryan


>
> $ apt-cache madison qemu
>   qemu | 1:2.6+dfsg-1ubuntu1 |
> http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/universe ppc64el
> Packages
>   qemu | 1:2.6+dfsg-1ubuntu1 |
> http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/main Sources
>   qemu | 1:2.6+dfsg-1ubuntu1ddw1 |
> http://ppa.launchpad.net/ubuntu-virt/ppa/ubuntu yakkety/main Sources
>
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> Title:
>   Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM
>
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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

Hi Serge,

yes, no ppc64el binaries so far:

$ apt-cache madison qemu
  qemu | 1:2.6+dfsg-1ubuntu1 | 
http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/universe ppc64el Packages
  qemu | 1:2.6+dfsg-1ubuntu1 | 
http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/main Sources
  qemu | 1:2.6+dfsg-1ubuntu1ddw1 | 
http://ppa.launchpad.net/ubuntu-virt/ppa/ubuntu yakkety/main Sources

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Re: [Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Serge Hallyn]

I've enabled ppc64le builds for that ppa.  Hopefully it proceeds to
automatically build the packages now, though I suspect the pkgs will
need to be re-pushed.

On Fri, Jun 10, 2016 at 5:14 PM, Breno Leitão
<1541...@bugs.launchpad.net> wrote:
> Hi Jon, Serge,
>
> I think the PPA is somehow corrupted. I am not able to see the ddw
> package on ppc64el arch. It shows up in amd64 (and the source) but not
> on ppc64el. Take a look:
>
> $ apt-cache madison qemu
>   qemu | 1:2.6+dfsg-1ubuntu1 | 
> http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/universe ppc64el 
> Packages
>   qemu | 1:2.6+dfsg-1ubuntu1 | 
> http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/main Sources
>   qemu | 1:2.6+dfsg-1ubuntu1ddw1 | 
> http://ppa.launchpad.net/ubuntu-virt/ppa/ubuntu yakkety/main Sources
>
> It is missing the binary for ppc64el. I looked at repository itself, and
> the Packages file for yakkety in ppc64el is empty. Take a look:
>
> http://ppa.launchpad.net/ubuntu-virt/ppa/ubuntu/dists/yakkety/main
> /binary-ppc64el/Packages.xz
>
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> https://bugs.launchpad.net/bugs/1541902
>
> Title:
>   Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM
>
> Status in qemu package in Ubuntu:
>   Confirmed
>
> Bug description:
>   == Comment: #0 - Breno Henrique Leitao  - 2016-02-04 
> 10:48:25 ==
>   This is a feature to track DDW support on Qemu/kvm passthrough. This is a 
> feature to improve performance when using GPUs on virtual machines.
>
>   The kernel pieces are already on version 4.2, and now we need the
>   pieces on qemu.
>
>   This should be sent upstream in 2 weeks, and submission URL pasted
>   here.
>
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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

Hi Jon, Serge,

I think the PPA is somehow corrupted. I am not able to see the ddw
package on ppc64el arch. It shows up in amd64 (and the source) but not
on ppc64el. Take a look:

$ apt-cache madison qemu
  qemu | 1:2.6+dfsg-1ubuntu1 | 
http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/universe ppc64el Packages
  qemu | 1:2.6+dfsg-1ubuntu1 | 
http://www.las.ic.unicamp.br/pub/ubuntu-ports yakkety/main Sources
  qemu | 1:2.6+dfsg-1ubuntu1ddw1 | 
http://ppa.launchpad.net/ubuntu-virt/ppa/ubuntu yakkety/main Sources

It is missing the binary for ppc64el. I looked at repository itself, and
the Packages file for yakkety in ppc64el is empty. Take a look:

http://ppa.launchpad.net/ubuntu-virt/ppa/ubuntu/dists/yakkety/main
/binary-ppc64el/Packages.xz

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

We should try to get this in for 16.04.1.  IBM can you give this PPA a
spin?

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Serge Hallyn]

Pushed a package to ppa:ubuntu-virt/ppa with the patchset.

** Summary changed:

- [FFE] Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM
+ Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

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

** Summary changed:

- Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM
+ [FFE] Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

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

** Summary changed:

- Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM
+ [FFE] Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

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Re: [Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Serge Hallyn]

> The patches were just sent upstream.
> 
> http://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg00057.html

Thanks.  The feedback also seems generally good, so I'm comfortable
with this.  The main problem now is timing, since we are well past
feature freeze for 16.04.  So if we want this in time for 16.04
we'll need a strong justification for its high priority, and to
mark this bug [FFE] in the Subject and subscribe the ubuntu-release
team per https://wiki.ubuntu.com/FreezeExceptionProcess .

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Re: [Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Serge Hallyn]

> The patches were just sent upstream.
> 
> http://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg00057.html

Thanks.  The feedback also seems generally good, so I'm comfortable
with this.  The main problem now is timing, since we are well past
feature freeze for 16.04.  So if we want this in time for 16.04
we'll need a strong justification for its high priority, and to
mark this bug [FFE] in the Subject and subscribe the ubuntu-release
team per https://wiki.ubuntu.com/FreezeExceptionProcess .

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

The patches were just sent upstream.

http://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg00057.html

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

The patches were just sent upstream.

http://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg00057.html

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

We should be able to send this patches soon.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Breno Leitão]

We should be able to send this patches soon.

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Serge Hallyn]

** Changed in: qemu (Ubuntu)
   Status: New => Incomplete

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Serge Hallyn]

** Changed in: qemu (Ubuntu)
   Status: New => Incomplete

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

What's the status on these patches?  Have they been accepted upstream
yet?

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Jon Grimm]

What's the status on these patches?  Have they been accepted upstream
yet?

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Title:
  Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Steve Langasek]

** Package changed: ubuntu => qemu (Ubuntu)

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Title:
  Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Steve Langasek]

** Package changed: ubuntu => qemu (Ubuntu)

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Title:
  Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

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[Bug 1541902] Re: Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

[Ubuntu Foundations Team Bug Bot]

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
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Title:
  Enable DDW on qemu aiming GPU passthrough performance on Ubuntu KVM

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