Re: [Xen-devel] Xen-unstable: Xen panic when shutting down HVM guest with PCI passthrough: RIP: e008:[<ffff82d0801099b1>] evtchn_move_pirqs+0x90/0xbf

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 06.06.14 at 12:14, <linux@xxxxxxxxxxxxxx> wrote:
>>> 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia 
>>> (Intel HDA) (rev 40)
>>>         Subsystem: Micro-Star International Co., Ltd. Device 7640
>>>         Flags: bus master, slow devsel, latency 64, IRQ 16
>>>         Memory at fddf8000 (64-bit, non-prefetchable) [size=16K]
>>>         Capabilities: [50] Power Management version 2
>>>         Kernel driver in use: snd_hda_intel
> 
>> That the in-Dom0 device was a sound controller was clear from the
>> kernel messages. The question was what IRQ(s) the passed through
>> device is using.
> 
> 07:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI 
> Turks [Radeon HD 6570] (prog-if 00 [VGA controller])
>         Subsystem: PC Partner Limited Device e193
>         Flags: fast devsel, IRQ 32
>         Memory at a0000000 (64-bit, prefetchable) [disabled] [size=256M]
>         Memory at fe1c0000 (64-bit, non-prefetchable) [disabled] [size=128K]
>         I/O ports at a000 [disabled] [size=256]
>         Expansion ROM at fe1a0000 [disabled] [size=128K]
>         Capabilities: [50] Power Management version 3
>         Capabilities: [58] Express Legacy Endpoint, MSI 00
>         Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+
>         Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 
> Len=010 <?>
>         Capabilities: [150] Advanced Error Reporting
>         Kernel driver in use: pciback

Okay, different IRQ indeed. So either vectors collided badly (which
shouldn't happen), or some other (likely kernel side) issue popped
up at exactly the wrong moment.

Jan


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