Subject: Re: [vhost:vhost 11/15] warning: (VOP && ..) selects VHOST_RING which has unmet direct dependencies (NETDEVICES && ..)

From: "Michael S. Tsirkin" <[email-masked]>
Date: Tue, 2 Aug 2016 00:18:46 +0300

On Tue, Aug 02, 2016 at 04:56:54AM +0800, kbuild test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost
> head:   c4ea43c2c1779f5dde3ff5645b830c90f75ccc15
> commit: efd7eb77f631e1ed3533db7725df157a379c78ef [11/15] VSOCK: Add Makefile and Kconfig
> config: x86_64-randconfig-x005-201631 (attached as .config)
> compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
> reproduce:
>         git checkout efd7eb77f631e1ed3533db7725df157a379c78ef
>         # save the attached .config to linux build tree
>         make ARCH=x86_64 
> 
> All warnings (new ones prefixed by >>):
> 
> warning: (VOP && CAIF_VIRTIO && VHOST_NET && VHOST_SCSI && VHOST_VSOCK && VHOST_NET && VHOST_SCSI && VHOST_VSOCK) selects VHOST_RING which has unmet direct dependencies (NETDEVICES && CAIF_VIRTIO || VIRTUALIZATION)

I don't see what is going on here.

VHOST_RING is in the same config file as VHOST_NET so it
has the same dependencies. How can one set VHOST_NET without
enabling dependencies for VHOST_RING?

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