Re: [PATCH] Documentation: DocBook: kgdb: update CONFIG_STRICT_KERNEL_RWX info

[Jonathan Corbet]

On Tue, 18 Apr 2017 18:58:45 -0700
Li Qiang <liq3ea@xxxxxxxxx> wrote:

> CONFIG_STRICT_KERNEL_RWX is no longer selectable on most architectures.
> Update this info to the documentation.
> 
> Signed-off-by: Li Qiang <liqiang6-s@xxxxxx>
> ---
>  Documentation/DocBook/kgdb.tmpl | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/DocBook/kgdb.tmpl b/Documentation/DocBook/kgdb.tmpl
> index 856ac20..ef0b67b 100644
> --- a/Documentation/DocBook/kgdb.tmpl
> +++ b/Documentation/DocBook/kgdb.tmpl
> @@ -121,7 +121,9 @@
>      If kgdb supports it for the architecture you are using, you can
>      use hardware breakpoints if you desire to run with the
>      CONFIG_STRICT_KERNEL_RWX option turned on, else you need to turn off
> -    this option.
> +    this option. In most architectures, this option is not selectable.
> +    For this situation, it can be turned off by adding a runtime parameter
> +    'rodata=off'.

So this is an improvement, I guess, though the paragraph remains kind of
confusing.  Is there any chance we could actually just say which
architectures can use hardware breakpoints, and which should boot with
rodata=off?

Thanks,

jon