linux-kernel - Re: [RFC v1 2/2] uio: Add Kconfig and Makefile support for UIO_PCI_GENERIC

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Message-ID: <2025092541-aspect-catcher-7dfa@gregkh>
Date: Thu, 25 Sep 2025 08:00:12 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Yaxing Guo <guoyaxing@...c.ac.cn>
Cc: linux-kernel@...r.kernel.org, anxu@...c.ac.cn, zhangjian@...c.ac.cn,
	wangran@...c.an.cn
Subject: Re: [RFC v1 2/2] uio: Add Kconfig and Makefile support for
 UIO_PCI_GENERIC_SVA

On Thu, Sep 25, 2025 at 12:06:37PM +0800, Yaxing Guo wrote:
> Add config symbol and build infrastructure for the UIO PCI generic
> driver with SVA (Shared Virtual Addressing) support.
> 
> This introduces:
> - A new tristate config option 'UIO_PCI_GENERIC_SVA' in Kconfig,
>   dependent on PCI and IOMMU_SVA.
> - Build rule in Makefile to compile uio_pci_generic_sva.o when enabled.


This should be part of patch 1, no need to split this apart.

> Signed-off-by: Yaxing Guo <guoyaxing@...c.ac.cn>
> ---
>  drivers/uio/Kconfig  | 5 +++++
>  drivers/uio/Makefile | 1 +
>  2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
> index b060dcd7c635..9849e53d1932 100644
> --- a/drivers/uio/Kconfig
> +++ b/drivers/uio/Kconfig
> @@ -164,4 +164,9 @@ config UIO_DFL
>  	    opae-sdk/tools/libopaeuio/
>  
>  	  If you compile this as a module, it will be called uio_dfl.
> +
> +config UIO_PCI_GENERIC_SVA
> +	tristate "Generic driver for PCI Express that supports sva"
> +	depends on PCI && IOMMU_SVA
> +

Please provide more information here, like the other entries have.

thanks,

greg k-h