The kernel page dump utility needs to be aware of the CONT bit before
it will break up pages ranges for display.
Signed-off-by: Jeremy Linton <jeremy.linton@xxxxxxx>
---
arch/arm64/mm/dump.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index f3d6221..5a22a11 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -67,6 +67,12 @@ static struct addr_marker address_markers[] = {
{ -1, NULL },
};
+/*
+ * The page dumper groups page table entries of the same type into a single
+ * description. It uses pg_state to track the range information while
+ * iterating over the pte entries. When the continuity is broken it then
+ * dumps out a description of the range.
+ */
struct pg_state {
struct seq_file *seq;
const struct addr_marker *marker;
@@ -114,6 +120,16 @@ static const struct prot_bits pte_bits[] = {
.set = "NG",
.clear = " ",
}, {
+ .mask = PTE_CONT,
+ .val = PTE_CONT,
+ .set = "CON",
+ .clear = " ",
+ }, {
+ .mask = PTE_TABLE_BIT,
+ .val = PTE_TABLE_BIT,
+ .set = " ",
+ .clear = "BLK",
+ }, {
.mask = PTE_UXN,
.val = PTE_UXN,
.set = "UXN",
@@ -198,7 +214,7 @@ static void note_page(struct pg_state *st, unsigned long addr, unsigned level,
unsigned long delta;
if (st->current_prot) {
- seq_printf(st->seq, "0x%16lx-0x%16lx ",
+ seq_printf(st->seq, "0x%016lx-0x%016lx ",
st->start_address, addr);
delta = (addr - st->start_address) >> 10;
--
2.4.3
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