RE: [PATCH] vfio: fix virtio-pci dependency

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> From: Arnd Bergmann <arnd@xxxxxxxxxx>
> Sent: Tuesday, January 9, 2024 3:57 PM
> 
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> The new vfio-virtio driver already has a dependency on
> VIRTIO_PCI_ADMIN_LEGACY,
> but that is a bool symbol and allows vfio-virtio to be built-in even if
> virtio-pci itself is a loadable module. This leads to a link failure:
> 
> aarch64-linux-ld: drivers/vfio/pci/virtio/main.o: in function
> `virtiovf_pci_probe':
> main.c:(.text+0xec): undefined reference to `virtio_pci_admin_has_legacy_io'
> aarch64-linux-ld: drivers/vfio/pci/virtio/main.o: in function
> `virtiovf_pci_init_device':
> main.c:(.text+0x260): undefined reference to
> `virtio_pci_admin_legacy_io_notify_info'
> aarch64-linux-ld: drivers/vfio/pci/virtio/main.o: in function
> `virtiovf_pci_bar0_rw':
> main.c:(.text+0x6ec): undefined reference to
> `virtio_pci_admin_legacy_common_io_read'
> aarch64-linux-ld: main.c:(.text+0x6f4): undefined reference to
> `virtio_pci_admin_legacy_device_io_read'
> aarch64-linux-ld: main.c:(.text+0x7f0): undefined reference to
> `virtio_pci_admin_legacy_common_io_write'
> aarch64-linux-ld: main.c:(.text+0x7f8): undefined reference to
> `virtio_pci_admin_legacy_device_io_write'
> 
> Add another explicit dependency on the tristate symbol.
> 
> Fixes: eb61eca0e8c3 ("vfio/virtio: Introduce a vfio driver over virtio devices")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>





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