On 4/28/2018 12:50 AM, Jiri Pirko wrote:
> Fri, Apr 27, 2018 at 07:06:57PM CEST,sridhar.samudrala@intel.com  wrote:
>> This feature bit can be used by hypervisor to indicate virtio_net device to
>> act as a standby for another device with the same MAC address.
>>
>> VIRTIO_NET_F_STANDBY is defined as bit 62 as it is a device feature bit.
>>
>> Signed-off-by: Sridhar Samudrala<sridhar.samudrala@intel.com>
>> ---
>> drivers/net/virtio_net.c        | 2 +-
>> include/uapi/linux/virtio_net.h | 3 +++
>> 2 files changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>> index 3b5991734118..51a085b1a242 100644
>> --- a/drivers/net/virtio_net.c
>> +++ b/drivers/net/virtio_net.c
>> @@ -2999,7 +2999,7 @@ static struct virtio_device_id id_table[] = {
>> 	VIRTIO_NET_F_GUEST_ANNOUNCE, VIRTIO_NET_F_MQ, \
>> 	VIRTIO_NET_F_CTRL_MAC_ADDR, \
>> 	VIRTIO_NET_F_MTU, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, \
>> -	VIRTIO_NET_F_SPEED_DUPLEX
>> +	VIRTIO_NET_F_SPEED_DUPLEX, VIRTIO_NET_F_STANDBY
> This is not part of current qemu master (head 6f0c4706b35dead265509115ddbd2a8d1af516c1)
> Were I can find the qemu code?
>
> Also, I think it makes sense to push HW (qemu HW in this case) first
> and only then the driver.

I had sent qemu patch with a couple of earlier versions of this patchset.
Will include it when i send out v10.