Re: pci_passthru: unmap_pptdev_mmio failed: No such file or directory

On Fri, 22 May 2026, Bjoern A. Zeeb wrote:

> On Fri, 22 May 2026, Bjoern A. Zeeb wrote:
>
>> Hi,
>> 
>> after updating my current base system (unknown from what anymore)
>> I was restarting one of my development bhyves which has two
>> passthru (one wifi card and one full pci xhci).
>> 
>> I am now getting:
>> 
>> pci_passthru: unmap_pptdev_mmio failed: No such file or directory
>> pci_passthru: unmap_pptdev_mmio failed: No such file or directory
>> pci_passthru: unmap_pptdev_mmio failed: No such file or directory
>> 
>> which is a fairly unhelpful message.  Could at least tell the device
>> if not more...
>> 
>> Anyone any ideas where this is from (or how to fix it)?
>
> So this comes from ppt.c in the kernel ppt_find().
>
> I am a bit buffled given:
>
> [1.001385] ppt0 mem 0xe1320000-0xe132ffff at device 20.0 on pci0
> [1.001386] ppt0: attached
> [1.001445] ppt1 mem 0xe1000000-0xe10fffff,0xe1100000-0xe1107fff at device 0.0 
> on pci2
> [1.001446] ppt1: attached
>
> % pciconf -l | grep ppt
> ppt0@pci0:0:20:0:       class=0x0c0330 rev=0x21 hdr=0x00 vendor=0x8086 
> device=0x9d2f subvendor=0x17aa subdevice=0x5062
> ppt1@pci0:3:0:0:        class=0x028000 rev=0x00 hdr=0x00 vendor=0x14c3 
> device=0x0616 subvendor=0x14c3 subdevice=0xe616
>
> % sysctl hw.vmm.ppt
> hw.vmm.ppt.devices: 2
>
>
> The config syas:
>
> pci.0.1.0.device=passthru
> pci.0.1.0.bus=0
> pci.0.1.0.slot=20
> pci.0.1.0.func=0
>
> pci.0.2.0.device=passthru
> pci.0.2.0.bus=3
> pci.0.2.0.slot=0
> pci.0.2.0.func=0
>
> pci.0.10.0.device=virtio-net
> pci.0.10.0.backend=tap3
>
> Funny enough not even the network interface is available to netboot upon 
> start.
>
> I'll keep digging but if someone has a clue to save me some time that would 
> be appreciated.

Never mind, not ppt_find but the other function; it's a bug in 36b855f189257.
I'll follow-up on the ocmmit.

-- 
Bjoern A. Zeeb                                                     r15:7