1 files changed, 21 insertions, 10 deletions

diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index cf33f33333cc..74c256744b25 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -14,13 +14,18 @@
  * of the License.
  */
 #include <linux/debugfs.h>
+#include <linux/errno.h>
 #include <linux/fs.h>
+#include <linux/io.h>
+#include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/seq_file.h>
 
 #include <asm/fixmap.h>
+#include <asm/memory.h>
 #include <asm/pgtable.h>
+#include <asm/pgtable-hwdef.h>
 
 #define LOWEST_ADDR	(UL(0xffffffffffffffff) << VA_BITS)
 
@@ -36,10 +41,10 @@ enum address_markers_idx {
 	VMEMMAP_START_NR,
 	VMEMMAP_END_NR,
 #endif
-	PCI_START_NR,
-	PCI_END_NR,
 	FIXADDR_START_NR,
 	FIXADDR_END_NR,
+	PCI_START_NR,
+	PCI_END_NR,
 	MODULES_START_NR,
 	MODUELS_END_NR,
 	KERNEL_SPACE_NR,
@@ -52,10 +57,10 @@ static struct addr_marker address_markers[] = {
 	{ 0,			"vmemmap start" },
 	{ 0,			"vmemmap end" },
 #endif
-	{ (unsigned long) PCI_IOBASE,		"PCI I/O start" },
-	{ (unsigned long) PCI_IOBASE + SZ_16M,	"PCI I/O end" },
 	{ FIXADDR_START,	"Fixmap start" },
 	{ FIXADDR_TOP,		"Fixmap end" },
+	{ PCI_IO_START,		"PCI I/O start" },
+	{ PCI_IO_END,		"PCI I/O end" },
 	{ MODULES_VADDR,	"Modules start" },
 	{ MODULES_END,		"Modules end" },
 	{ PAGE_OFFSET,		"Kernel Mapping" },
@@ -245,10 +250,12 @@ static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
 
 	for (i = 0; i < PTRS_PER_PMD; i++, pmd++) {
 		addr = start + i * PMD_SIZE;
-		if (pmd_none(*pmd) || pmd_sect(*pmd) || pmd_bad(*pmd))
+		if (pmd_none(*pmd) || pmd_sect(*pmd)) {
 			note_page(st, addr, 3, pmd_val(*pmd));
-		else
+		} else {
+			BUG_ON(pmd_bad(*pmd));
 			walk_pte(st, pmd, addr);
+		}
 	}
 }
 
@@ -260,10 +267,12 @@ static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
 
 	for (i = 0; i < PTRS_PER_PUD; i++, pud++) {
 		addr = start + i * PUD_SIZE;
-		if (pud_none(*pud) || pud_sect(*pud) || pud_bad(*pud))
+		if (pud_none(*pud) || pud_sect(*pud)) {
 			note_page(st, addr, 2, pud_val(*pud));
-		else
+		} else {
+			BUG_ON(pud_bad(*pud));
 			walk_pmd(st, pud, addr);
+		}
 	}
 }
 
@@ -275,10 +284,12 @@ static void walk_pgd(struct pg_state *st, struct mm_struct *mm, unsigned long st
 
 	for (i = 0; i < PTRS_PER_PGD; i++, pgd++) {
 		addr = start + i * PGDIR_SIZE;
-		if (pgd_none(*pgd) || pgd_bad(*pgd))
+		if (pgd_none(*pgd)) {
 			note_page(st, addr, 1, pgd_val(*pgd));
-		else
+		} else {
+			BUG_ON(pgd_bad(*pgd));
 			walk_pud(st, pgd, addr);
+		}
 	}
 }