[PATCH] vhost: vsock: select CONFIG_VHOST

[PATCH] vhost: vsock: select CONFIG_VHOST

[Arnd Bergmann]

When building the new vsock code without vhost, we get a build error:

drivers/built-in.o: In function `vhost_vsock_flush':
:(.text+0x24d29c): undefined reference to `vhost_poll_flush'

This adds an explicit 'select' like we have for the other vhost
drivers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/vhost/Kconfig.vsock | 2 ++
 1 file changed, 2 insertions(+)

The patch causing the problem is currently in net-next, so the fix should be
applied on top of that.

diff --git a/drivers/vhost/Kconfig.vsock b/drivers/vhost/Kconfig.vsock
index 3491865d3eb9..bfb9edc4b5d6 100644
--- a/drivers/vhost/Kconfig.vsock
+++ b/drivers/vhost/Kconfig.vsock
@@ -2,6 +2,8 @@ config VHOST_VSOCK
 	tristate "vhost virtio-vsock driver"
 	depends on VSOCKETS && EVENTFD
 	select VIRTIO_VSOCKETS_COMMON
+	select VHOST
+	select VHOST_RING
 	default n
 	---help---
 	Say M here to enable the vhost-vsock for virtio-vsock guests
-- 
2.1.0.rc2

Re: [PATCH] vhost: vsock: select CONFIG_VHOST

[Michael S. Tsirkin]

On Tue, Dec 08, 2015 at 04:46:08PM +0100, Arnd Bergmann wrote:
> When building the new vsock code without vhost, we get a build error:
> 
> drivers/built-in.o: In function `vhost_vsock_flush':
> :(.text+0x24d29c): undefined reference to `vhost_poll_flush'
> 
> This adds an explicit 'select' like we have for the other vhost
> drivers.
> 
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

This will need to be done eventually, so

Acked-by: Michael S. Tsirkin <mst@redhat.com>

but I really think the right thing for now is to revert current vsock
code, or disable building it unconditionally.  Stefan, could you please
send a patch like this?

> ---
>  drivers/vhost/Kconfig.vsock | 2 ++
>  1 file changed, 2 insertions(+)
> 
> The patch causing the problem is currently in net-next, so the fix should be
> applied on top of that.
> 
> diff --git a/drivers/vhost/Kconfig.vsock b/drivers/vhost/Kconfig.vsock
> index 3491865d3eb9..bfb9edc4b5d6 100644
> --- a/drivers/vhost/Kconfig.vsock
> +++ b/drivers/vhost/Kconfig.vsock
> @@ -2,6 +2,8 @@ config VHOST_VSOCK
>  	tristate "vhost virtio-vsock driver"
>  	depends on VSOCKETS && EVENTFD
>  	select VIRTIO_VSOCKETS_COMMON
> +	select VHOST
> +	select VHOST_RING
>  	default n
>  	---help---
>  	Say M here to enable the vhost-vsock for virtio-vsock guests
> -- 
> 2.1.0.rc2
> 

Re: [PATCH] vhost: vsock: select CONFIG_VHOST

[David Miller]

From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Tue, 8 Dec 2015 18:09:44 +0200

> On Tue, Dec 08, 2015 at 04:46:08PM +0100, Arnd Bergmann wrote:
>> When building the new vsock code without vhost, we get a build error:
>> 
>> drivers/built-in.o: In function `vhost_vsock_flush':
>> :(.text+0x24d29c): undefined reference to `vhost_poll_flush'
>> 
>> This adds an explicit 'select' like we have for the other vhost
>> drivers.
>> 
>> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> 
> This will need to be done eventually, so
> 
> Acked-by: Michael S. Tsirkin <mst@redhat.com>
> 
> but I really think the right thing for now is to revert current vsock
> code, or disable building it unconditionally.  Stefan, could you please
> send a patch like this?

I'm waiting for the full single revert patch and will apply it as
soon as I receive it.