linux-kernel - Re: [PATCH v2 2/3] uio: Add Kconfig and Makefile support for UIO_PCI_GENERIC

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Message-ID: <2025092524-boneless-sultry-f575@gregkh>
Date: Thu, 25 Sep 2025 14:30:32 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Yaxing Guo <guoyaxing@...c.ac.cn>
Cc: linux-kernel@...r.kernel.org, wangran@...c.ac.cn, zhangjian@...c.ac.cn,
	anxu@...c.ac.cn
Subject: Re: [PATCH v2 2/3] uio: Add Kconfig and Makefile support for
 UIO_PCI_GENERIC_SVA

On Thu, Sep 25, 2025 at 06:40:17PM +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.
> 
> Signed-off-by: Yaxing Guo <guoyaxing@...c.ac.cn>
> ---
> Changes in v2:
>   -- Add help info in Kconfig
> 
>  drivers/uio/Kconfig  | 12 ++++++++++++
>  drivers/uio/Makefile |  1 +
>  2 files changed, 13 insertions(+)
> 
> diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig
> index b060dcd7c635..ae59e3d8a99b 100644
> --- a/drivers/uio/Kconfig
> +++ b/drivers/uio/Kconfig
> @@ -164,4 +164,16 @@ 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
> +	help
> +	  Userspace I/O driver for PCI devices that support Shared Virtual
> +          Addressing (SVA), enabling direct use of user-space virtual
> +          addresses in device DMA operations via IOMMU hardware.
> +
> +          This driver binds to PCI devices and exposes them to userspace
> +          via the UIO framework.

What is the module name?