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Re: [Xen-devel] questions about xen device pass-through.
Thanks Jean.I got it resolved.
But now I am facing an issue at the next step. After I assign the device back to Dom0,
there is an issue in DomU reverting back to the virtual mode.
Initially I start an Windows 7 HVM DomU and give it virtualized access to various devices.
After that I unbind some devices (Ethernet in this case), assign them to pciback and attach them to DomU (using xm pci-attach). At this stage DomU recognizes the hotplugging and I get passthrough IO. Afterwards I detach the device from DomU (using xm pci-detach). At this stage the device gets assigned to pciback. So I unbind it from pciback and bind the device back to Dom0 using sysfs mechanisms. So Dom0 gets direct access to the device. Dom0 network works fine after this.
But after this DomU does not revert back to the virtual interface it was using earlier. In case of ethernet, I can still see a vif1.0 interface if I do a ifconfig in Dom0. But there is no network access in DomU. I tried to reconfigure the network/connection etc. inside Windows7 DomU, but could not get it working.
Please tell me I am missing some thing or should be doing it some other way.
Let me know if I need to give some more information.
(I am just testing for ethernet right now..I am planning to try this for other kinds of devices also like VGA,USB, Wireless etc.)
On Wed, Aug 17, 2011 at 6:27 PM, Jean Guyader <jean.guyader@xxxxxxxxx> wrote:
On 17 August 2011 20:55, Dushmanta Mohapatra
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