hw/virtio: Introduce VHOST_VSOCK_COMMON symbol in Kconfig

Instead of adding 'vhost-vsock-common.c' twice (for VHOST_VSOCK
and VHOST_USER_VSOCK), have it depend on VHOST_VSOCK_COMMON,
selected by both symbols.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230524093744.88442-6-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>

Author: philmd

hw/virtio/Kconfig

@@ -56,14 +56,20 @@ config VIRTIO_MEM
     depends on VIRTIO_MEM_SUPPORTED
     select MEM_DEVICE
 
+config VHOST_VSOCK_COMMON
+    bool
+    depends on VIRTIO
+
 config VHOST_VSOCK
     bool
     default y
+    select VHOST_VSOCK_COMMON
     depends on VIRTIO && VHOST_KERNEL
 
 config VHOST_USER_VSOCK
     bool
     default y
+    select VHOST_VSOCK_COMMON
     depends on VIRTIO && VHOST_USER
 
 config VHOST_USER_I2C

hw/virtio/meson.build

@@ -23,8 +23,9 @@ specific_virtio_ss.add(when: 'CONFIG_VIRTIO_BALLOON', if_true: files('virtio-bal
 specific_virtio_ss.add(when: 'CONFIG_VIRTIO_CRYPTO', if_true: files('virtio-crypto.c'))
 specific_virtio_ss.add(when: 'CONFIG_VHOST_USER_FS', if_true: files('vhost-user-fs.c'))
 specific_virtio_ss.add(when: 'CONFIG_VIRTIO_PMEM', if_true: files('virtio-pmem.c'))
-specific_virtio_ss.add(when: 'CONFIG_VHOST_VSOCK', if_true: files('vhost-vsock.c', 'vhost-vsock-common.c'))
-specific_virtio_ss.add(when: 'CONFIG_VHOST_USER_VSOCK', if_true: files('vhost-user-vsock.c', 'vhost-vsock-common.c'))
+specific_virtio_ss.add(when: 'CONFIG_VHOST_VSOCK_COMMON', if_true: files('vhost-vsock-common.c'))
+specific_virtio_ss.add(when: 'CONFIG_VHOST_VSOCK', if_true: files('vhost-vsock.c'))
+specific_virtio_ss.add(when: 'CONFIG_VHOST_USER_VSOCK', if_true: files('vhost-user-vsock.c'))
 specific_virtio_ss.add(when: 'CONFIG_VIRTIO_RNG', if_true: files('virtio-rng.c'))
 specific_virtio_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu.c'))
 specific_virtio_ss.add(when: 'CONFIG_VIRTIO_MEM', if_true: files('virtio-mem.c'))