Re: [PATCH 12/12] vfio/pci: Introduce vfio_pci_core.ko

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On Wed, Jul 28, 2021 at 2:47 PM Jason Gunthorpe <jgg@xxxxxxxxxx> wrote:
>
> On Wed, Jul 28, 2021 at 02:29:56PM +0200, Christoph Hellwig wrote:
>
> > So not really an issue here.  VFIO_PCI_CORE really is underlying
> > infrastructure a user should not care about.
>
> So then we can write it like below? Unfortunately it deletes the nice
> menu structure that groups all the PCI drivers together like platform
> (and mdev in future). Not sure this loss is worth the backwards compat

I think you can get back some structure by adding a 'menu "VFIO PCI drivers"'
and 'endmenu' around it.

> @@ -17,6 +15,7 @@ config VFIO_PCI_INTX
>
>  config VFIO_PCI
>         tristate "Generic VFIO support for any PCI device"
> +       select VFIO_PCI_CORE
>         help
>           Support for the generic PCI VFIO bus driver which can connect any
>           PCI device to the VFIO framework.
> @@ -50,6 +49,7 @@ endif
>  config MLX5_VFIO_PCI
>         tristate "VFIO support for MLX5 PCI devices"
>         depends on MLX5_CORE
> +       select VFIO_PCI_CORE
>         help

These two now have to get a 'depends on MMU' if they don't already inherit
that from elsewhere.

       Arnd



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