1 files changed, 11 insertions, 8 deletions

diff --git a/arch/x86/mm/ident_map.c b/arch/x86/mm/ident_map.c
index ec21796ac5fd..4473cb4f8b90 100644
--- a/arch/x86/mm/ident_map.c
+++ b/arch/x86/mm/ident_map.c
@@ -3,15 +3,17 @@
  * included by both the compressed kernel and the regular kernel.
  */
 
-static void ident_pmd_init(unsigned long pmd_flag, pmd_t *pmd_page,
+static void ident_pmd_init(struct x86_mapping_info *info, pmd_t *pmd_page,
                            unsigned long addr, unsigned long end)
 {
         addr &= PMD_MASK;
         for (; addr < end; addr += PMD_SIZE) {
                 pmd_t *pmd = pmd_page + pmd_index(addr);
 
-                if (!pmd_present(*pmd))
-                        set_pmd(pmd, __pmd(addr | pmd_flag));
+                if (pmd_present(*pmd))
+                        continue;
+
+                set_pmd(pmd, __pmd((addr - info->offset) | info->pmd_flag));
         }
 }
 
@@ -30,13 +32,13 @@ static int ident_pud_init(struct x86_mapping_info *info, pud_t *pud_page,
 
                 if (pud_present(*pud)) {
                         pmd = pmd_offset(pud, 0);
-                        ident_pmd_init(info->pmd_flag, pmd, addr, next);
+                        ident_pmd_init(info, pmd, addr, next);
                         continue;
                 }
                 pmd = (pmd_t *)info->alloc_pgt_page(info->context);
                 if (!pmd)
                         return -ENOMEM;
-                ident_pmd_init(info->pmd_flag, pmd, addr, next);
+                ident_pmd_init(info, pmd, addr, next);
                 set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE));
         }
 
@@ -44,14 +46,15 @@ static int ident_pud_init(struct x86_mapping_info *info, pud_t *pud_page,
 }
 
 int kernel_ident_mapping_init(struct x86_mapping_info *info, pgd_t *pgd_page,
-                              unsigned long addr, unsigned long end)
+                              unsigned long pstart, unsigned long pend)
 {
+        unsigned long addr = pstart + info->offset;
+        unsigned long end = pend + info->offset;
         unsigned long next;
         int result;
-        int off = info->kernel_mapping ? pgd_index(__PAGE_OFFSET) : 0;
 
         for (; addr < end; addr = next) {
-                pgd_t *pgd = pgd_page + pgd_index(addr) + off;
+                pgd_t *pgd = pgd_page + pgd_index(addr);
                 pud_t *pud;
 
                 next = (addr & PGDIR_MASK) + PGDIR_SIZE;