xen September 2012

xen@lists.fedoraproject.org

4 participants
4 discussions

execute commands from dom0 into domU
by silviu d 06 Jun '15

06 Jun '15

Hello, I was wondering if there is a way to execute commands from dom0 into domU without loging into domU with ssh. thanks

3 2

[Xen-devel] [ANNOUNCE] Xen 4.2 released!
by Pasi Kärkkäinen 20 Oct '12

20 Oct '12

----- Forwarded message from Keir Fraser <keir(a)xen.org> ----- From: Keir Fraser <keir(a)xen.org> To: xen-devel(a)lists.xen.org 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 Xen-devel(a)lists.xen.org http://lists.xen.org/xen-devel ----- End forwarded message -----

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Re: [Fedora-xen] [Xen-devel] Xen PCI passthru supported reset methods (d3d0, FLR, bus reset, link reset)
by Robin Axelsson 18 Sep '12

18 Sep '12

On 2012-09-17 21:15, Konrad Rzeszutek Wilk wrote: > On Mon, Sep 17, 2012 at 01:42:54PM +0100, Ian Campbell wrote: >> On Mon, 2012-09-17 at 13:32 +0100, Pasi Kärkkäinen wrote: >>> 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. >> With a pvops dom0 Xen resets devices by writing to its "reset" node in >> sysfs so it will reset the device using whatever method the dom0 kernel >> supports for that device. > And if you use Xen PCI-back it has this enabled so you don't even > need the 'reset' functionality. >> The version of Linux I have to hand has, in __pci_dev_reset, calls to >> the following in this order and stops after the first one which >> succeeds: >> * pci_dev_specific_reset (AKA per device quirks) >> * pcie_flr >> * pci_af_flr >> * pci_pm_reset >> * pci_parent_bus_reset >> >> See drivers/pci/pci.c in the kernel for more info. >> >> IIRC classic Xen kernels had similar code in pciback, although I don't >> know which specific sets of actions or in which order they were tried. >> >> Ian. >> >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel(a)lists.xen.org >> http://lists.xen.org/xen-devel >> > . > That sounds like great news, that means that FLR is not a requirement to successfully pass through hardware without errors, as is stated in the VTdHowTo page. So it seems that the VTdHowTo page needs to be updated with this information.

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4.2.0-rc4 available to test
by M A Young 07 Sep '12

07 Sep '12

I have a temporary build of what will probably be the final 4.2.0 release candidate for testing at http://koji.fedoraproject.org/koji/taskinfo?taskID=4466244 Michael Young

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xen September 2012