Re: [PATCH] arm: Add Kconfig entry to select CONFIG_DTB_FILE

[Jan Beulich <jbeulich@xxxxxxxx>]

On 08.03.2021 10:52, Michal Orzel wrote:
> --- a/xen/common/Kconfig
> +++ b/xen/common/Kconfig
> @@ -400,6 +400,20 @@ config DOM0_MEM
>  
>         Leave empty if you are not sure what to specify.
>  
> +config LINK_DTB
> +     bool "Link DTB into Xen image"
> +     depends on ARM
> +     default n

I don't think this last line is needed.

> +config DTB_FILE
> +     string "Absolute path to device tree blob"
> +     default ""
> +     depends on LINK_DTB
> +     ---help---
> +       When using a bootloader that has no device tree support or when there
> +       is no bootloader at all, use this option to specify the absolute path
> +       to a device tree that will be linked directly inside Xen binary.

How is selecting LINK_DTB but leaving DTB_FILE at an empty string
different from not having a LINK_DTB setting at all?

Jan