Re: [PATCH] configure: Fix build dependencies with vhost-vdpa.

[Philippe Mathieu-Daudé]

On 9/24/20 11:00 PM, Laurent Vivier wrote:
> Following the same logic as for vhost-net-user and vhost-kernel,
> enable vhost-net if vhost-net-vdpa is enabled and vhost-net is not
> explicitly disabled.
> See 299e6f19b3e2 ("vhost-net: revamp configure logic")
> 
> Autoselect VHOST if VHOST_VDPA is set
> See 21c6b0c87e85 ("configure: simplify vhost condition with Kconfig")
> See 2becc36a3e53 ("meson: infrastructure for building emulators"
> 
> Problems can be triggered using;
> ... --enable-vhost-vdpa --disable-vhost-user --disable-vhost-kernel ...
> 
> Fixes: 108a64818e69 ("vhost-vdpa: introduce vhost-vdpa backend")
> Cc: lulu@redhat.com
> Cc: pbonzini@redhat.com
> Cc: marcandre.lureau@redhat.com
> Signed-off-by: Laurent Vivier <lvivier@redhat.com>

Superfluous trailing '.' in subject.

Otherwise:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  Kconfig.host | 4 ++++
>  configure    | 3 ++-
>  meson.build  | 1 +
>  3 files changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/Kconfig.host b/Kconfig.host
> index 4af19bf70ef9..a9a55a9c315c 100644
> --- a/Kconfig.host
> +++ b/Kconfig.host
> @@ -24,6 +24,10 @@ config VHOST_USER
>      bool
>      select VHOST
>  
> +config VHOST_VDPA
> +    bool
> +    select VHOST
> +
>  config VHOST_KERNEL
>      bool
>      select VHOST
> diff --git a/configure b/configure
> index e8e8e984f245..8ee15810c882 100755
> --- a/configure
> +++ b/configure
> @@ -2494,9 +2494,10 @@ if test "$vhost_net_vdpa" = "yes" && test 
> "$vhost_vdpa" = "no"; then
>    error_exit "--enable-vhost-net-vdpa requires --enable-vhost-vdpa"
>  fi
>  
> -# OR the vhost-kernel and vhost-user values for simplicity
> +# OR the vhost-kernel, vhost-vdpa and vhost-user values for simplicity
>  if test "$vhost_net" = ""; then
>    test "$vhost_net_user" = "yes" && vhost_net=yes
> +  test "$vhost_net_vdpa" = "yes" && vhost_net=yes
>    test "$vhost_kernel" = "yes" && vhost_net=yes
>  fi
>  
> diff --git a/meson.build b/meson.build
> index f4d1ab109680..488ca205fad2 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -521,6 +521,7 @@ kconfig_external_symbols = [
>    'CONFIG_OPENGL',
>    'CONFIG_X11',
>    'CONFIG_VHOST_USER',
> +  'CONFIG_VHOST_VDPA',
>    'CONFIG_VHOST_KERNEL',
>    'CONFIG_VIRTFS',
>    'CONFIG_LINUX',
>