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Subject[PATCH 2/8] x86/dump_pagetables: Fix printout of p4d level
Date
Modify printk_prot() and callers to print out additional page table
level correctly.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
arch/x86/mm/dump_pagetables.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index a824d575bb84..b371ab68f2d4 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -138,7 +138,7 @@ static void printk_prot(struct seq_file *m, pgprot_t prot, int level, bool dmsg)
{
pgprotval_t pr = pgprot_val(prot);
static const char * const level_name[] =
- { "cr3", "pgd", "pud", "pmd", "pte" };
+ { "cr3", "pgd", "p4d", "pud", "pmd", "pte" };

if (!pgprot_val(prot)) {
/* Not present */
@@ -162,12 +162,12 @@ static void printk_prot(struct seq_file *m, pgprot_t prot, int level, bool dmsg)
pt_dump_cont_printf(m, dmsg, " ");

/* Bit 7 has a different meaning on level 3 vs 4 */
- if (level <= 3 && pr & _PAGE_PSE)
+ if (level <= 4 && pr & _PAGE_PSE)
pt_dump_cont_printf(m, dmsg, "PSE ");
else
pt_dump_cont_printf(m, dmsg, " ");
- if ((level == 4 && pr & _PAGE_PAT) ||
- ((level == 3 || level == 2) && pr & _PAGE_PAT_LARGE))
+ if ((level == 5 && pr & _PAGE_PAT) ||
+ ((level == 4 || level == 3) && pr & _PAGE_PAT_LARGE))
pt_dump_cont_printf(m, dmsg, "PAT ");
else
pt_dump_cont_printf(m, dmsg, " ");
@@ -298,7 +298,7 @@ static void walk_pte_level(struct seq_file *m, struct pg_state *st, pmd_t addr,
for (i = 0; i < PTRS_PER_PTE; i++) {
prot = pte_flags(*start);
st->current_address = normalize_addr(P + i * PTE_LEVEL_MULT);
- note_page(m, st, __pgprot(prot), 4);
+ note_page(m, st, __pgprot(prot), 5);
start++;
}
}
@@ -317,13 +317,13 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st, pud_t addr,
if (!pmd_none(*start)) {
if (pmd_large(*start) || !pmd_present(*start)) {
prot = pmd_flags(*start);
- note_page(m, st, __pgprot(prot), 3);
+ note_page(m, st, __pgprot(prot), 4);
} else {
walk_pte_level(m, st, *start,
P + i * PMD_LEVEL_MULT);
}
} else
- note_page(m, st, __pgprot(0), 3);
+ note_page(m, st, __pgprot(0), 4);
start++;
}
}
@@ -362,13 +362,13 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st, p4d_t addr,
!pud_already_checked(prev_pud, start, st->check_wx)) {
if (pud_large(*start) || !pud_present(*start)) {
prot = pud_flags(*start);
- note_page(m, st, __pgprot(prot), 2);
+ note_page(m, st, __pgprot(prot), 3);
} else {
walk_pmd_level(m, st, *start,
P + i * PUD_LEVEL_MULT);
}
} else
- note_page(m, st, __pgprot(0), 2);
+ note_page(m, st, __pgprot(0), 3);

prev_pud = start;
start++;
--
2.11.0
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