Re: [PATCH] virtio-pci: don't touch pci on virtio reset

[Claudio Fontana <cfontana@suse.de>]

testing it now...

Thanks!

C


On 7/27/22 18:14, Michael S. Tsirkin wrote:
> virtio level reset should not affect pci express
> registers such as PM, error or link.
> 
> Fixes: 27ce0f3afc ("hw/virtio: fix Power Management Control Register for PCI Express virtio devices")
> Fixes: d584f1b9ca ("hw/virtio: fix Link Control Register for PCI Express virtio devices")
> Fixes: c2cabb3422 ("hw/virtio: fix error enabling flags in Device Control register")
> Cc: "Marcel Apfelbaum" <marcel@redhat.com>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> ---
>  hw/virtio/virtio-pci.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
> index 45327f0b31..3189ec014d 100644
> --- a/hw/virtio/virtio-pci.c
> +++ b/hw/virtio/virtio-pci.c
> @@ -1955,6 +1955,13 @@ static void virtio_pci_reset(DeviceState *qdev)
>          proxy->vqs[i].avail[0] = proxy->vqs[i].avail[1] = 0;
>          proxy->vqs[i].used[0] = proxy->vqs[i].used[1] = 0;
>      }
> +}
> +
> +static void virtio_pci_bus_reset(DeviceState *qdev)
> +{
> +    PCIDevice *dev = PCI_DEVICE(qdev);
> +
> +    virtio_pci_reset(qdev);
>  
>      if (pci_is_express(dev)) {
>          pcie_cap_deverr_reset(dev);
> @@ -2022,7 +2029,7 @@ static void virtio_pci_class_init(ObjectClass *klass, void *data)
>      k->class_id = PCI_CLASS_OTHERS;
>      device_class_set_parent_realize(dc, virtio_pci_dc_realize,
>                                      &vpciklass->parent_dc_realize);
> -    dc->reset = virtio_pci_reset;
> +    dc->reset = virtio_pci_bus_reset;
>  }
>  
>  static const TypeInfo virtio_pci_info = {