Re: [PATCH] arm64/ptdump:display the Linear Mapping start marker

[Randy Dunlap]

On 2/2/21 7:07 AM, Hailong Liu wrote:
> From: Hailong Liu <liu.hailong6@xxxxxxxxxx>
> 
> The current /sys/kernel/debug/kernel_page_tables does not display the
> *Linear Mapping start* marker on arm64, which I think should be paired
> with the *Linear Mapping start* marker.

paired with itself?  just asking...

> 
> Since *Linear Mapping start* is the first marker, use level=-1 to display it.
> 
> Signed-off-by: Hailong Liu <liu.hailong6@xxxxxxxxxx>
> ---
>  arch/arm64/mm/ptdump.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c
> index 04137a8f3d2d..0e050d76b83a 100644
> --- a/arch/arm64/mm/ptdump.c
> +++ b/arch/arm64/mm/ptdump.c
> @@ -324,6 +324,7 @@ void ptdump_walk(struct seq_file *s, struct ptdump_info *info)
>  	st = (struct pg_state){
>  		.seq = s,
>  		.marker = info->markers,
> +		.level = -1,
>  		.ptdump = {
>  			.note_page = note_page,
>  			.range = (struct ptdump_range[]){
> 


-- 
~Randy