Commit 84bbabc3 authored by Juergen Gross's avatar Juergen Gross Committed by Thomas Gleixner

x86/mm: Fix dump pagetables for 4 levels of page tables

Commit fdd3d8ce ("x86/dump_pagetables: Add support for 5-level
paging") introduced an error for dumping with only 4 levels by setting
PGD_LEVEL_MULT to a wrong value.

This is leading to e.g. addresses printed as "(null)" for ranges:

  x86/mm: Found insecure W+X mapping at address (null)/(null)

Make PGD_LEVEL_MULT a multiple of PTRS_PER_P4D instead of PTRS_PER_PUD

Fixes: fdd3d8ce ("x86/dump_pagetables: Add support for 5-level paging")
Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
Reviewed-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Link: http://lkml.kernel.org/r/20170412143634.6846-1-jgross@suse.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 5f2173e0
...@@ -111,7 +111,7 @@ static struct addr_marker address_markers[] = { ...@@ -111,7 +111,7 @@ static struct addr_marker address_markers[] = {
#define PMD_LEVEL_MULT (PTRS_PER_PTE * PTE_LEVEL_MULT) #define PMD_LEVEL_MULT (PTRS_PER_PTE * PTE_LEVEL_MULT)
#define PUD_LEVEL_MULT (PTRS_PER_PMD * PMD_LEVEL_MULT) #define PUD_LEVEL_MULT (PTRS_PER_PMD * PMD_LEVEL_MULT)
#define P4D_LEVEL_MULT (PTRS_PER_PUD * PUD_LEVEL_MULT) #define P4D_LEVEL_MULT (PTRS_PER_PUD * PUD_LEVEL_MULT)
#define PGD_LEVEL_MULT (PTRS_PER_PUD * P4D_LEVEL_MULT) #define PGD_LEVEL_MULT (PTRS_PER_P4D * P4D_LEVEL_MULT)
#define pt_dump_seq_printf(m, to_dmesg, fmt, args...) \ #define pt_dump_seq_printf(m, to_dmesg, fmt, args...) \
({ \ ({ \
......
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