Re: Fwd: Re: Xen 4.3 / 4.4 - concurrent APIs, VGA Passthru

[Georg Bege <therion@ninth-art.de>]

Hi

Am 29.07.2014 12:38, schrieb Gordan Bobic:
> BTW, why off-list?
>
> Replies inline below.
Oh sorry, my mistake.

>
> On 2014-07-29 08:39, Georg Bege wrote:
>> Hi
>>
>> Am 29.07.2014 09:10, schrieb Gordan Bobic:
>>> On 07/29/2014 02:12 AM, Georg Bege wrote:
>>>> Hi Again,
>>>>
>>>> no with Xen 4.3 its not working to me, in Win XP64 I get kinda
>>>> abstract
>>>> distortions in the screen,
>>>
>>> That sounds suspiciously like the IOMEM memory stomp I see with my
>>> motherboard.
>>>
>>>> not much later then I get a kernel panic on Dom0 regarding IRQ16 (like
>>>> sth IRC16: no body cared.. oops) the kernel gets damaged by it and
>>>> then
>>>> the whole machine works like in slow-motion (everything X11, moving of
>>>> the mouse etc.) all I can do then is hard reboot...
>>>
>>> I have seen the interrupt issue before but _only_ when I xl destroy
>>> the domUs. It never happened on a clean shutdown/reboot of domUs. The
>>> interrupt you mention - does it happen to be the IRQ used by your USB
>>> controller?
>> Im not sure but the IRQ 16 is used by:
>>  16:    2065542          0          0          0          0
>> 0          0          0  xen-pirq-ioapic-level  ehci_hcd:usb1,
>> snd_emu10k1, nouveau
>
> ehci_hcd:usb1 sounds like USB.
>
> If you look at lspci -vvv, look for "IRQ 16". It should match.
>
Yes you're right, it is - however Im quite suprised how many devices
share that same Interrupt.

Interrupt: pin A routed to IRQ 16:

00:1a.0 USB controller: Intel Corporation C600/X79 series chipset USB2
Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
02:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host
Controller (rev 04) (prog-if 30 [XHCI])
03:00.0 VGA compatible controller: NVIDIA Corporation GF100GL [Quadro
5000] (rev a3) (prog-if 00 [VGA controller])
04:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce
210] (rev a2) (prog-if 00 [VGA controller])
05:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic
SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03)
0a:00.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 04)

Is this normal?
I've to check out the other stuff, I'll reply again once I did that -
but might take till tomorrow.

Georg