Re: [PATCH v2 0/5] pci-ids: virtio cleanup

[Gerd Hoffmann]

On Fri, Sep 30, 2022 at 04:22:21PM +0200, David Hildenbrand wrote:
> On 30.09.22 15:58, Gerd Hoffmann wrote:
> > Drop legacy ids for virtio 1.0 devices, they are not needed
> > and will be overridden anyway by generic virtio pci code.
> > 
> > Improve modern virtio id documentation.
> > 
> > Gerd Hoffmann (5):
> >    pci-ids: drop PCI_DEVICE_ID_VIRTIO_IOMMU
> >    pci-ids: drop PCI_DEVICE_ID_VIRTIO_MEM
> 
> I remember that for some weird reason, this was required for Linux to
> actually make use of the device. I never figured out why -- maybe that
> changed.

Looking at 'info pci' the mem + pmem devices look identical with and
without this series ...

  Bus  0, device   3, function 0:
    Class 0255: PCI device 1af4:1058
      PCI subsystem 1af4:1100
      IRQ 11, pin A
      BAR4: 64 bit prefetchable memory at 0xfe000000 [0xfe003fff].
      id ""
  Bus  0, device   4, function 0:
    Class 0255: PCI device 1af4:105b
      PCI subsystem 1af4:1100
      IRQ 10, pin A
      BAR4: 64 bit prefetchable memory at 0xfe004000 [0xfe007fff].
      id ""

... and the PCI ID conforms virtio 1.0 (aka 0x1040 + virtio id).

take care,
  Gerd