Subject: Re: Ping? Re: [PATCH rc] kvm: Prevent compiling virt/kvm/vfio.c unless VFIO is selected

From: Jason Gunthorpe <[email-masked]>
Date: Wed, 29 Nov 2023 08:48:21 -0400

On Tue, Nov 28, 2023 at 06:21:42PM -0800, Sean Christopherson wrote:
> diff --git a/include/linux/vfio.h b/include/linux/vfio.h
> index 454e9295970c..a65b2513f8cd 100644
> --- a/include/linux/vfio.h
> +++ b/include/linux/vfio.h
> @@ -289,16 +289,12 @@ void vfio_combine_iova_ranges(struct rb_root_cached *root, u32 cur_nodes,
>  /*
>   * External user API
>   */
> -#if IS_ENABLED(CONFIG_VFIO_GROUP)
>  struct iommu_group *vfio_file_iommu_group(struct file *file);
> +
> +#if IS_ENABLED(CONFIG_VFIO_GROUP)
>  bool vfio_file_is_group(struct file *file);
>  bool vfio_file_has_dev(struct file *file, struct vfio_device *device);
>  #else
> -static inline struct iommu_group *vfio_file_iommu_group(struct file *file)
> -{
> -       return NULL;
> -}
> -
>  static inline bool vfio_file_is_group(struct file *file)
>  {
>         return false;
> 

So you symbol get on a symbol that can never be defined? Still says to
me the kconfig needs fixing :|

But sure, as a small patch it looks fine

Thanks,
Jason