Re: [PATCH] kvm tools: add status notification hook to virtio-mmio

[Sasha Levin <sasha.levin@oracle.com>]

On 05/21/2013 08:29 AM, Marc Zyngier wrote:
> Patch e03b449cbddf (kvm tools: add status notification hook for
> virtio) converted virtio-net to use a new notification mechanism,
> but unfortunately left virtio-mmio behind.
> 
> The direct consequence is that both arm and arm64 guests are left
> without any form of networking. Not good.
> 
> Bring virtio-mmio into this brave new notified world, and feel the
> power of being able to ping again.
> 
> Cc: Sasha Levin <sasha.levin@oracle.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
> ---
>  tools/kvm/virtio/mmio.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/kvm/virtio/mmio.c b/tools/kvm/virtio/mmio.c
> index a4e4855..afa2692 100644
> --- a/tools/kvm/virtio/mmio.c
> +++ b/tools/kvm/virtio/mmio.c
> @@ -144,16 +144,21 @@ static void virtio_mmio_config_out(u64 addr, void *data, u32 len,
>  				   struct virtio_device *vdev)
>  {
>  	struct virtio_mmio *vmmio = vdev->virtio;
> +	struct kvm *kvm = vmmio->kvm;
>  	u32 val = 0;
>  
>  	switch (addr) {
>  	case VIRTIO_MMIO_HOST_FEATURES_SEL:
>  	case VIRTIO_MMIO_GUEST_FEATURES_SEL:
>  	case VIRTIO_MMIO_QUEUE_SEL:
> -	case VIRTIO_MMIO_STATUS:
>  		val = ioport__read32(data);
>  		*(u32 *)(((void *)&vmmio->hdr) + addr) = val;
>  		break;
> +	case VIRTIO_MMIO_STATUS:
> +		vmmio->hdr.status = ioport__read32(data);
> +		if (vdev->ops->notify_status)
> +			vdev->ops->notify_status(kvm, vmmio->dev, vmmio->hdr.status);
> +		break;
>  	case VIRTIO_MMIO_GUEST_FEATURES:
>  		if (vmmio->hdr.guest_features_sel == 0) {
>  			val = ioport__read32(data);
> 

Pekka, could you apply please?

	Acked-by: Sasha Levin <sasha.levin@oracle.com>


Thanks,
Sasha