Re: [PATCH-for-5.0 v2 6/6] hw/pci-host: Add Kconfig entry to select the IGD Passthrough Host Bridge

[Alex Williamson <alex.williamson@redhat.com>]

On Fri,  6 Dec 2019 18:25:14 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> Add the INTEL_IGD_PASSTHROUGH Kconfig option.
> 
> Since it is implied by the PCI_I440FX option, this does not change
> the default selection. However users are now able to deselelect it.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>  hw/pci-host/Kconfig       | 4 ++++
>  hw/pci-host/Makefile.objs | 2 +-
>  2 files changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/pci-host/Kconfig b/hw/pci-host/Kconfig
> index b0aa8351c4..8c88a7b9dd 100644
> --- a/hw/pci-host/Kconfig
> +++ b/hw/pci-host/Kconfig
> @@ -1,6 +1,9 @@
>  config PAM
>      bool
>  
> +config INTEL_IGD_PASSTHROUGH
> +    bool

I'd be tempted to suggest a 'depends on XEN' here and maybe use XEN in
the config name and perhaps the file name in patch 5/6 as well.
There's already confusion as to the extent that this is used
generically between both Xen and vfio assignment (it's not), so might as
well take this opportunity.  Thanks,

Alex

> +
>  config PREP_PCI
>      bool
>      select PCI
> @@ -32,6 +35,7 @@ config PCI_I440FX
>      bool
>      select PCI
>      select PAM
> +    imply INTEL_IGD_PASSTHROUGH
>  
>  config PCI_EXPRESS_Q35
>      bool
> diff --git a/hw/pci-host/Makefile.objs b/hw/pci-host/Makefile.objs
> index 5affd21899..9dbd0f9042 100644
> --- a/hw/pci-host/Makefile.objs
> +++ b/hw/pci-host/Makefile.objs
> @@ -14,7 +14,7 @@ common-obj-$(CONFIG_VERSATILE_PCI) += versatile.o
>  common-obj-$(CONFIG_PCI_SABRE) += sabre.o
>  common-obj-$(CONFIG_FULONG) += bonito.o
>  common-obj-$(CONFIG_PCI_I440FX) += i440fx.o
> -common-obj-$(CONFIG_PCI_I440FX) += igd_pt.o
> +common-obj-$(CONFIG_INTEL_IGD_PASSTHROUGH) += igd_pt.o
>  common-obj-$(CONFIG_PCI_EXPRESS_Q35) += q35.o
>  common-obj-$(CONFIG_PCI_EXPRESS_GENERIC_BRIDGE) += gpex.o
>  common-obj-$(CONFIG_PCI_EXPRESS_XILINX) += xilinx-pcie.o