Konrad Rzeszutek Wilk
2011-Oct-25 19:33 UTC
Re: [Xen-devel] pci passthrough and live migration
On Tue, Oct 25, 2011 at 03:33:10PM +0800, Tommy wrote:> Hello, everybody! > > I''ve done some research on Xenlive migration recently.XenLive? What is that? Oh, is that the CentOS4..> > I''ve checked the maillist for pci passthrough and live migration, I > can''t figure out the current progress on them.Did you check the Wiki?> > Does Xen support live migration with pci passthrough? How about that > with vga passthrough?You can do it with SR-IOV, but normal PCI passthrough would not work that well.> > If it is supported now, what extra configurations do I need?It definitly is supported in the kernel.. you need to use ''pci-attach'' command and hardware that can do IOMMU if you want to do it with HVM. If you want to do with PV, you need to pass ''iommu=soft'' on the Linux command line. However, before the migration, you _must_ hot-unplug the pci-device - you can use ''pci-detach'' and then on the other end do ''pci-attach''. I am not sure if the tools do this automatically but they might.> > If not, could anyone give some ideas on what is the main difficulties > for it? > > At last, does anyone have some documents about this area?Just search for SR-IOV and Xen.> > Thanks! > > > -- > > Yours Sincerely! > >> _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel