Re: [Xen-devel] [RFC PATCH 1/7] build: add debug menu to Kconfig

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Sun, May 01, 2016 at 11:10:40PM -0500, Doug Goldstein wrote:
> There are a number of debugging options for Xen so the idea is to have a
> menu to group them all together. Enabling this menu item will also
> disable NDEBUG which will result in more debug prints. This was
> previously wired into the 'debug=y' command line option.
> 
> Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx>
> ---
> CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> CC: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
> CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> CC: Jan Beulich <jbeulich@xxxxxxxx>
> CC: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> CC: Tim Deegan <tim@xxxxxxx>
> CC: Wei Liu <wei.liu2@xxxxxxxxxx>
> ---
>  xen/Kconfig              | 2 ++
>  xen/Kconfig.debug        | 7 +++++++
>  xen/include/xen/config.h | 4 ++++
>  3 files changed, 13 insertions(+)
>  create mode 100644 xen/Kconfig.debug
> 
> diff --git a/xen/Kconfig b/xen/Kconfig
> index fa8b27c..0fe7a1a 100644
> --- a/xen/Kconfig
> +++ b/xen/Kconfig
> @@ -26,3 +26,5 @@ config DEFCONFIG_LIST
>  config EXPERT
>       string
>       option env="XEN_CONFIG_EXPERT"
> +
> +source "Kconfig.debug"
> diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
> new file mode 100644
> index 0000000..d14d758
> --- /dev/null
> +++ b/xen/Kconfig.debug
> @@ -0,0 +1,7 @@
> +
> +menuconfig DEBUG
> +     bool "Debugging Options"
> +     ---help---
> +       If you want to debug Xen say Y and select any additional debugging
> +       support options. This enables additional debugging through Xen
> +       and as a result enabling this option results in no security 
> guarantees.

Maybe that's because I'm not a native speaker, this doesn't sound right
to me -- it implies debugging option makes xen insecure.

I think you mean "results in no security support"?

Wei.

> diff --git a/xen/include/xen/config.h b/xen/include/xen/config.h
> index ef6e5ee..473c5e8 100644
> --- a/xen/include/xen/config.h
> +++ b/xen/include/xen/config.h
> @@ -81,4 +81,8 @@
>  /* allow existing code to work with Kconfig variable */
>  #define NR_CPUS CONFIG_NR_CPUS
>  
> +#ifndef CONFIG_DEBUG
> +#define NDEBUG
> +#endif
> +
>  #endif /* __XEN_CONFIG_H__ */
> -- 
> 2.7.3
> 

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