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Re: [PATCH v3 1/2] xen-pciback: prepare for the split for stub and PV
- To: Oleksandr Andrushchenko <andr2000@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 23 Sep 2021 13:10:50 +0200
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- Cc: boris.ostrovsky@xxxxxxxxxx, jgross@xxxxxxxx, julien@xxxxxxx, sstabellini@xxxxxxxxxx, Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- Delivery-date: Thu, 23 Sep 2021 11:11:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 23.09.2021 11:53, Oleksandr Andrushchenko wrote:
> --- a/drivers/xen/Kconfig
> +++ b/drivers/xen/Kconfig
> @@ -180,10 +180,34 @@ config SWIOTLB_XEN
> select DMA_OPS
> select SWIOTLB
>
> +config XEN_PCI_STUB
> + bool
> +
> +config XEN_PCIDEV_STUB
> + tristate "Xen PCI-device stub driver"
> + depends on PCI && !X86 && XEN
> + depends on XEN_BACKEND
> + select XEN_PCI_STUB
> + default m
> + help
> + The PCI device stub driver provides limited version of the PCI
> + device backend driver without para-virtualized support for guests.
> + If you select this to be a module, you will need to make sure no
> + other driver has bound to the device(s) you want to make visible to
> + other guests.
> +
> + The "hide" parameter (only applicable if backend driver is compiled
> + into the kernel) allows you to bind the PCI devices to this module
> + from the default device drivers. The argument is the list of PCI BDFs:
> + xen-pciback.hide=(03:00.0)(04:00.0)
> +
> + If in doubt, say m.
> +
> config XEN_PCIDEV_BACKEND
> tristate "Xen PCI-device backend driver"
> depends on PCI && X86 && XEN
> depends on XEN_BACKEND
> + select XEN_PCI_STUB
Does kconfig not at least warn about this? The selected item has a
"depends on !X88" conflicting with the "depends on X86" here.
Jan
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