I was reading the Wiki page here: http://wiki.xen.org/wiki/VTd_HowTo
don't know how updated it is, BUT at the top it said:
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Xen 4.1 xl tools notes
- Only devices with FLR capabilities are supported.
- Passing through a PCI card without FLR capability will result
an error.
To check if your PCI devices have FLR function, check in this
wiki, [How can I check if PCI device supports FLR
(Function Level Reset) ?]
If you see output with "FLReset-" then your PCI device don't
support FLR function. If output have "FLReset+" then it does.
As this time of writing, June 2012, there are very very few PCI
devices support FLR function.
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THAN was reading here:
http://wiki.xen.org/wiki/Xen_PCI_Passthrough#How_can_I_check_if_PCI_device_supports_FLR_.28Function_Level_Reset.29_.3F
at the bottom of the page where it says:
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How can I check if PCI
device supports FLR (Function Level Reset)?
Run "lspci -vv" (in dom0) and check if the device has "FLReset+"
in the DevCap
field.
If you are Ubuntu/Debian user don't forget to add sudo at front,
otherwise, you won't get the result you should get.
sudo lspci -vv | egrep -i --colour flreset
The above line should get root access for lspci program and show
colour with flreset it found from output
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I did that and ALL of my devices it listed showed "FLReset-",
there were only 3x "Etron Technology, Inc. EJ168 USB3.0"
controllers that showed "FLReset+"
SO, I have been trying to get my ATI FirePro V7900 Video Card to
passthru to a Windows 7 Ultimate DomU with no luck so far AND was
wondering how critical was for that device to show as "FLReset+"?
1.) Since my VGA card and AUDIO component of it, shows up as
"FLReset-", does that mean it is impossible to get it fully
working in a Win7 DomU?
2.) Does having the feature "FLReset+" depend on the motherboard
BIOS, motherboard hardware or the BIOS onboard the Video Card that
could be updated to get back the "FLReset+" so you can have the
FLR reset functionality?
I just spent a lot of time and money building this computer for
the purpose of getting Xen to work (So far still working on that),
i would just hate to see all of that go to waste, SO hoping
someone could answer the above concerns... :)
Thank you as always
