[Xen-devel] [ANNOUNCE] Xen 4.2 released!

[Pasi Kärkkäinen]

----- Forwarded message from Keir Fraser  -----

From: Keir Fraser 
To: [e-mail]
Date: Mon, 17 Sep 2012 12:34:00 +0100
Subject: [Xen-devel] [ANNOUNCE] Xen 4.2 released!

The Xen team is pleased to announce the release of Xen 4.2.

The result of *18 months* of development, new features include:
 * Paging/sharing improvements for high-density VM environments (eg. VDI)
 * Enhancements to PV-HVM guest performance
 * Improved memaccess (guest introspection) support
 * EFI boot support, replacing the legacy BIOS boot environment
 * Improved RAS support
 * XL as the default toolstack; XEND officially deprecated
 * Upstream QEMU support, with its up-to-date feature list

Detailed release notes, including a more extensive feature list:
  http://wiki.xen.org/wiki/Xen_4.2_Release_Notes

To download tarballs:
  http://xen.org/download/index_4.2.0.html
Or the Mercurial source repository (tag 'RELEASE-4.2.0'):
  http://xenbits.xen.org/hg/staging/xen-4.2-testing.hg

And the announcement on the Xen blog:
  http://blog.xen.org/index.php/2012/09/17/xen-4-2-0-released/

Thanks to the many people who have contributed to this release!

Regards,
 The Xen Team

_______________________________________________
Xen-devel mailing list
[e-mail]
http://lists.xen.org/xen-devel

----- End forwarded message -----

[Robin Axelsson]

Congratulations, it's always good to see the development moving forward!

There is one thing I wonder though when it comes to PCI passthrough:

Can Xen reset hardware through the d3d0 in the ACPI interface and/or 
through a 'bus reset' or a 'link reset'? Or can it reset hardware that 
is marked for passthrough only through FLR?

For details see e.g.
http://www.vmware.com/files/pdf/techpaper/vsp_4_vmdirectpath_host.pdf

Regards

Robin.

On 2012-09-17 13:38, Pasi Kärkkäinen wrote:
> ----- Forwarded message from Keir Fraser  -----
>
> From: Keir Fraser
> To: [e-mail]
> Date: Mon, 17 Sep 2012 12:34:00 +0100
> Subject: [Xen-devel] [ANNOUNCE] Xen 4.2 released!
>
> The Xen team is pleased to announce the release of Xen 4.2.
>
> The result of *18 months* of development, new features include:
> Paging/sharing improvements for high-density VM environments (eg. VDI)
> Enhancements to PV-HVM guest performance
> Improved memaccess (guest introspection) support
> EFI boot support, replacing the legacy BIOS boot environment
> Improved RAS support
> XL as the default toolstack; XEND officially deprecated
> Upstream QEMU support, with its up-to-date feature list
>
> Detailed release notes, including a more extensive feature list:
>    http://wiki.xen.org/wiki/Xen_4.2_Release_Notes
>
> To download tarballs:
>    http://xen.org/download/index_4.2.0.html
> Or the Mercurial source repository (tag 'RELEASE-4.2.0'):
>    http://xenbits.xen.org/hg/staging/xen-4.2-testing.hg
>
> And the announcement on the Xen blog:
>    http://blog.xen.org/index.php/2012/09/17/xen-4-2-0-released/
>
> Thanks to the many people who have contributed to this release!
>
> Regards,
>   The Xen Team
>
> Xen-devel mailing list
> [e-mail]
> http://lists.xen.org/xen-devel
> ----- End forwarded message -----
>
> xen mailing list
> [e-mail]
> https://admin.fedoraproject.org/mailman/listinfo/xen

Xen PCI passthru supported reset methods (d3d0, FLR, bus reset, link reset)

[Pasi Kärkkäinen]

On Mon, Sep 17, 2012 at 01:51:03PM +0200, Robin Axelsson wrote:
> There is one thing I wonder though when it comes to PCI passthrough:
>
> Can Xen reset hardware through the d3d0 in the ACPI interface and/or
> through a 'bus reset' or a 'link reset'? Or can it reset hardware
> that is marked for passthrough only through FLR?
>
> For details see e.g.
> http://www.vmware.com/files/pdf/techpaper/vsp_4_vmdirectpath_host.pdf

I added xen-devel to the CC-list.
Hopefully someone there can reply this question.

-- Pasi
> Regards
>
> Robin.

[Konrad Rzeszutek Wilk]

On Mon, Sep 17, 2012 at 01:51:03PM +0200, Robin Axelsson wrote:
> Congratulations, it's always good to see the development moving forward!
>
> There is one thing I wonder though when it comes to PCI passthrough:
>
> Can Xen reset hardware through the d3d0 in the ACPI interface and/or
> through a 'bus reset' or a 'link reset'? Or can it reset hardware
> that is marked for passthrough only through FLR?

It does it using whatever Linux does. Which means FLR, then for good
measure also D3->D0.
> For details see e.g.
> http://www.vmware.com/files/pdf/techpaper/vsp_4_vmdirectpath_host.pdf
>
> Regards
>
> Robin.
>
> On 2012-09-17 13:38, Pasi Kärkkäinen wrote:
> > ----- Forwarded message from Keir Fraser  -----
> >
> > From: Keir Fraser
> > To: [e-mail]
> > Date: Mon, 17 Sep 2012 12:34:00 +0100
> > Subject: [Xen-devel] [ANNOUNCE] Xen 4.2 released!
> >
> > The Xen team is pleased to announce the release of Xen 4.2.
> >
> > The result of *18 months* of development, new features include:
> > Paging/sharing improvements for high-density VM environments (eg. VDI)
> > Enhancements to PV-HVM guest performance
> > Improved memaccess (guest introspection) support
> > EFI boot support, replacing the legacy BIOS boot environment
> > Improved RAS support
> > XL as the default toolstack; XEND officially deprecated
> > Upstream QEMU support, with its up-to-date feature list
> >
> > Detailed release notes, including a more extensive feature list:
> >   http://wiki.xen.org/wiki/Xen_4.2_Release_Notes
> >
> > To download tarballs:
> >   http://xen.org/download/index_4.2.0.html
> > Or the Mercurial source repository (tag 'RELEASE-4.2.0'):
> >   http://xenbits.xen.org/hg/staging/xen-4.2-testing.hg
> >
> > And the announcement on the Xen blog:
> >   http://blog.xen.org/index.php/2012/09/17/xen-4-2-0-released/
> >
> > Thanks to the many people who have contributed to this release!
> >
> > Regards,
> >  The Xen Team
> >
> > Xen-devel mailing list
> > [e-mail]
> > http://lists.xen.org/xen-devel
> > ----- End forwarded message -----
> >
> > xen mailing list
> > [e-mail]
> > https://admin.fedoraproject.org/mailman/listinfo/xen
>
> --
> xen mailing list
> [e-mail]
> https://admin.fedoraproject.org/mailman/listinfo/xen

[M A Young]

I have a temporary build of xen-4.2.0 at 
http://koji.fedoraproject.org/koji/taskinfo?taskID=4493396
I would like to know a bit more about libvirt support for 4.2 before I do 
any proper releases as I know a lot of people use xen via libvirt.

Michael Young

[Pasi Kärkkäinen]

On Mon, Sep 17, 2012 at 10:21:51PM +0100, M A Young wrote:
> I have a temporary build of xen-4.2.0 at
> http://koji.fedoraproject.org/koji/taskinfo?taskID=4493396
> I would like to know a bit more about libvirt support for 4.2 before
> I do any proper releases as I know a lot of people use xen via
> libvirt.

Great, thanks! That was fast :)

-- Pasi

[Andy Burns]

On 17 September 2012 22:21, M A Young  wrote:
> I have a temporary build of xen-4.2.0 at
> http://koji.fedoraproject.org/koji/taskinfo?taskID=4493396
> I would like to know a bit more about libvirt support for 4.2 before I do
> any proper releases as I know a lot of people use xen via libvirt.

Have the RPMs from this test build been removed? I can't find any
linked from the koji page.

I'd like to test Xen 4.2 with FC17 to see if the improvements in XL
help with a PCI passthrough problem I'm having ...

[Andy Burns]

On 20 October 2012 12:44, Andy Burns  wrote:
> On 17 September 2012 22:21, M A Young  wrote:
> > http://koji.fedoraproject.org/koji/taskinfo?taskID=4493396
>
> Have the RPMs from this test build been removed? I can't find any
> linked from the koji page.

OK, I'm building it from source at
http://pasik.reaktio.net/fedora/xen/xen-4.2.0-0.1.fc17.src.rpm

Will report results ...

[Andy Burns]

On 20 October 2012 14:51, Andy Burns  wrote:
> I'm building it from source at
> http://pasik.reaktio.net/fedora/xen/xen-4.2.0-0.1.fc17.src.rpm
>
> Will report results ...

Built ok, installed ok (after removing libvirt and friends) dom0 boots
ok, xl create has managed to pass all four devices into my domU (with
fc16 and xen 4.1.x only one of the devices was passed) lspci sees
them.

I should probably change my rmmod/unbind scripts to use the new xl
pci-assignable-add method

I've not checked if the PCI device actually functions yet ... fingers crossed.