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arm64/ptdump:display the Linear Mapping start marker

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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 end* marker.

Since *Linear Mapping start* is the first marker, use initialise 'level'
to -1 in order to display it.

Signed-off-by: Hailong Liu <liu.hailong6@zte.com.cn>
Link: https://lore.kernel.org/r/20210202150749.10104-1-liuhailongg6@163.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Hailong Liu 2021-02-02 23:07:49 +08:00 committed by Will Deacon
parent 12fc428840
commit b9ba680969
1 changed files with 1 additions and 0 deletions
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arch/arm64/mm/ptdump.c
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@ -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[]){