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Diffstat (limited to 'arch/arm64/mm/dump.c')
-rw-r--r--arch/arm64/mm/dump.c30
1 files changed, 20 insertions, 10 deletions
diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index d54dc9ac4b70..74c256744b25 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -14,14 +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)
@@ -37,10 +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,
@@ -53,10 +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" },
@@ -246,10 +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);
+ }
}
}
@@ -261,10 +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);
+ }
}
}
@@ -276,10 +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);
+ }
}
}