Re: [Qemu-block] [PATCH v2 2/5] virtio-blk: add "discard-wzeroes" boolean property

[Stefano Garzarella]

On Fri, Feb 01, 2019 at 12:29:28PM +0800, Stefan Hajnoczi wrote:
> On Thu, Jan 31, 2019 at 04:19:11PM +0100, Stefano Garzarella wrote:
> > In order to avoid migration issues, we enable DISCARD and
> > WRITE ZEROES features only for machine type >= 4.0
> 
> Please use two separate properties that correspond to the
> VIRTIO_BLK_F_DISCARD and VIRTIO_BLK_F_WRITE_ZEROES virtio-blk feature
> bits.

Okay.
As Michael suggested, what do you think if I use a similar approach of
virtio-net, adding an host_features variable and setting a corresponding
feature bit?

Thanks,
Stefano