Re: PCI passthrough resource remapping

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* Kenni Lund (kenni@xxxxxxx) wrote:
> Client dmesg: http://pastebin.com/uNG4QK5j
> Host dmesg: http://pastebin.com/jZu3WKZW
> 
> I just verified it and I do get the call trace in the host (which
> disables IRQ 19, used by the PCI USB card), exactly at the same second

It looks like IRQ 19 is shared between the ehci controller and the
ivtv tuner.  What do you see in /proc/interrupts on the host (before
you unbind and after you bind to pci stub)?

The host dmesg shows other possible devices sharing that interrupt:

$ grep "IRQ 19" jZu3WKZW
   482. ahci 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) -> IRQ 19
   578. ehci_hcd 0000:02:01.3: PCI INT A -> GSI 19 (level, low) -> IRQ 19
   623. uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19
   795. ivtv 0000:03:09.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
   814. IRQ 19/ivtv1: IRQF_DISABLED is not guaranteed on shared IRQs
   955. pci-stub 0000:02:01.3: PCI INT A -> GSI 19 (level, low) -> IRQ 19

thanks,
-chris
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