From: "Phil (list)" <pbpublist@gmail.com>
To: kvm@vger.kernel.org
Subject: PCI passthrough problem
Date: Thu, 01 Oct 2015 03:27:22 -0400 [thread overview]
Message-ID: <1443684442.3440.32.camel@gmail.com> (raw)
If this isn't the right place to ask, any pointers to the correct place
are appreciated...
I'm trying to see if I can get PCI passthrough working for a video
capture card (Hauppauge Colossus 1x PCIe) under a Windows XP guest (32
-bit). Things appear to be somewhat working (Windows is seeing the
device, the drivers successfully installed, and device manager
indicates everything is working) however when I fire up the capture
application, it is not able to find the device despite Windows
recognizing it (no errors, it just doesn't 'see' any installed capture
devices). There is also a secondary capture/viewer application that
won't even install due to not being able to find a capture card. Since
that wasn't the behavior when running it natively under Windows, I'm
assuming that the issue is related to PCI passthrough but it's
difficult to be certain since I'm not seeing any errors beyond the
capture applications not being able to find the device.
Some details on my setup: i7-2600 running on a Q77 motherboard with VT
-d enabled in bios. I'm running Debian Linux (testing) with qemu-kvm
1:2.4+dfsg-3 and am passing intel_iommu=on as a kernel parameter on
boot. These are the main details I can think of to share, but if there
is any additional info that would be useful, please let me know and
I'll be happy to provide it.
Having read through a few different posts around the 'net on how to do
PCI passthrough (pretty much everything I've found was discussing GPUs,
and almost always on a different distro), the only thing that jumps out
as a potential problem is that the card in question does not appear to
support FLR. However, I'm not clear if that's an absolute requirement
for PCI passthrough or something that is specific to GPU support?
Beyond that, I'm at a loss as to what the issue could be...
Thanks,
Phil
next reply other threads:[~2015-10-01 7:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 7:27 Phil (list) [this message]
2015-10-01 12:32 ` PCI passthrough problem Mauricio Tavares
2015-10-02 2:38 ` Phil (list)
2015-10-02 3:00 ` Alex Williamson
2015-10-02 20:09 ` Phil (list)
-- strict thread matches above, loose matches on Subject: below --
2010-01-22 5:24 PCI Passthrough Problem Aaron Clausen
2010-01-22 5:47 ` Yolkfull Chow
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