Re: [Xen-devel] Xen 4.4 trunk: device [xxxx:yyyy] has invalid IRQ; check vendor BIOS

[Mark Hurenkamp <mark.hurenkamp@xxxxxxxxx>]

On 2013-11-25 20:16, Mark Hurenkamp wrote:
> Looking at the output of dmesg, there is a clear hint of what might be
> wrong; it lists several (>10) of the following messages:
> [    3.957006] pcieport 0000:00:01.0: device [8086:0d01] has invalid
> IRQ; check vendor BIOS
> [    3.957018] pcieport 0000:00:01.0: can't find IRQ for PCI INT A;
> please try using pci=biosirq
Additionally, i found some more strangeness in the dmesg output:
[    3.725793] pci 0000:06:00.0: BAR 15: can't assign mem pref (size 
0x200000)
[    3.725796] pci 0000:06:04.0: BAR 14: can't assign mem (size 
0x200000)
Also repeating several times for multiple devices.
Could this be related to the problems i see?

> This while booting the same kernel (3.13-rc1) without xen works fine.
>
> I'm not sure where this problem originates, the suggestion to use
> 'pci=biosirq' (which i also tried adding to the kernel commandline to
> no avail) seems to indicate that the Bios (or in this case EFI, or
> Xen?) is not setting up the proper interrupts for these devices. Note
> that I'm not using boot-camp, I'm booting xen.efi directly from
> refind.
>
> Is there anything i can do to remedy this? I've built Xen from
> (recent) trunk, and would be happy to help debug/analyse this problem,
> just don't know quite where to start...
>
> I can provide dmesg; xl dmesg, or lspci output if so desired, just let
> me know what is of interest.
>
>
> Warm regards,
> Mark.
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