Video card passthrough success

Video card passthrough success

[Luke-Jr]

Just thought I should pop a note out here that I have been using my
Radeon 5850 for OpenCL inside KVM (fglrx) successfully for nearly a week now.

Commit: c7b3e90e20c512a992865c38db03543a654e5d12
Motherboard: Intel DQ67SW
CPU: Intel Core i5-2400
Host node: Linux 2.6.37-gentoo-r4 (untainted)

*** Script ***
#!/bin/bash
modprobe pci-stub
for id in 6899 aa50; do
    echo 1002 $id > /sys/bus/pci/drivers/pci-stub/new_id
done
for pci in 0000:01:00.{0,1}; do
    echo $pci > "/sys/bus/pci/devices/$pci/driver/unbind"
    echo $pci > /sys/bus/pci/drivers/pci-stub/bind
done
exec \
ii/bin/qemu-system-x86_64 -curses -device pci-assign,host=01:00.0 \
-drive file=minerG.hdi,if=virtio -m 256 -cpu host -balloon virtio

Re: Video card passthrough success

[Jan Kiszka]

[-- Attachment #1: Type: text/plain, Size: 1171 bytes --]

On 2011-05-13 04:25, Luke-Jr wrote:
> Just thought I should pop a note out here that I have been using my
> Radeon 5850 for OpenCL inside KVM (fglrx) successfully for nearly a week now.

Interesting. Do you also get BIOS/early boot outputs? Did you try some
Windows guest as well?

> 
> Commit: c7b3e90e20c512a992865c38db03543a654e5d12
> Motherboard: Intel DQ67SW
> CPU: Intel Core i5-2400
> Host node: Linux 2.6.37-gentoo-r4 (untainted)
> 
> *** Script ***
> #!/bin/bash
> modprobe pci-stub
> for id in 6899 aa50; do
>     echo 1002 $id > /sys/bus/pci/drivers/pci-stub/new_id
> done
> for pci in 0000:01:00.{0,1}; do
>     echo $pci > "/sys/bus/pci/devices/$pci/driver/unbind"
>     echo $pci > /sys/bus/pci/drivers/pci-stub/bind
> done
> exec \
> ii/bin/qemu-system-x86_64 -curses -device pci-assign,host=01:00.0 \
> -drive file=minerG.hdi,if=virtio -m 256 -cpu host -balloon virtio

Based on that ID I assume you passed the host's primary (or even only)
adapter as the guest's primary one, right?

Thanks for sharing this. I think we should create some wiki page to
collect these information. I'll try to look into this later.

Jan


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 259 bytes --]

Re: Video card passthrough success

[Luke-Jr]

On Friday, May 13, 2011 2:30:38 am Jan Kiszka wrote:
> On 2011-05-13 04:25, Luke-Jr wrote:
> > Just thought I should pop a note out here that I have been using my
> > Radeon 5850 for OpenCL inside KVM (fglrx) successfully for nearly a week
> > now.
> 
> Interesting. Do you also get BIOS/early boot outputs? Did you try some
> Windows guest as well?

I don't know-- never used the Radeon for video output at all. I would expect 
BIOS/early boot stuff to be on the primary emulated ncurses video card anyway. 
I have no Windows license.

> Based on that ID I assume you passed the host's primary (or even only)
> adapter as the guest's primary one, right?

No. My primary video chipset (used for actual video) is the (much superior to 
any Radeon on Linux) Intel HD Graphics 2000 built into the i5-2400.
The guest's primary is the emulated ncurses.

Re: Video card passthrough success

[Luke-Jr]

Finally decided to see just how much of the Radeon was working (eg, if it was 
*just* OpenCL or not), and I am happy to confirm that both video output and 
OpenGL acceleration are fully functional inside KVM.

Re: Video card passthrough success

[Avi Kivity]

On 05/20/2011 05:56 AM, Luke-Jr wrote:
> Finally decided to see just how much of the Radeon was working (eg, if it was
> *just* OpenCL or not), and I am happy to confirm that both video output and
> OpenGL acceleration are fully functional inside KVM.

That's really surprising (and a really good surprise, too).  We should 
have a wiki page to summarize what has been tried, with what version, 
and with what results.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.