x86/power/64: Do not refer to __PAGE_OFFSET from assembly code

[cascardo/linux.git] / arch / x86 / power / hibernate_64.c

diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index f2b5e6a..f0b5f2d 100644 (file)
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -37,11 +37,11 @@ unsigned long jump_address_phys;
  */
 unsigned long restore_cr3 __visible;
 
-pgd_t *temp_level4_pgt __visible;
+unsigned long temp_level4_pgt __visible;
 
 unsigned long relocated_restore_code __visible;
 
-static int set_up_temporary_text_mapping(void)
+static int set_up_temporary_text_mapping(pgd_t *pgd)
 {
        pmd_t *pmd;
        pud_t *pud;
@@ -71,7 +71,7 @@ static int set_up_temporary_text_mapping(void)
                __pmd((jump_address_phys & PMD_MASK) | __PAGE_KERNEL_LARGE_EXEC));
        set_pud(pud + pud_index(restore_jump_address),
                __pud(__pa(pmd) | _KERNPG_TABLE));
-       set_pgd(temp_level4_pgt + pgd_index(restore_jump_address),
+       set_pgd(pgd + pgd_index(restore_jump_address),
                __pgd(__pa(pud) | _KERNPG_TABLE));
 
        return 0;
@@ -90,15 +90,16 @@ static int set_up_temporary_mappings(void)
                .kernel_mapping = true,
        };
        unsigned long mstart, mend;
+       pgd_t *pgd;
        int result;
        int i;
 
-       temp_level4_pgt = (pgd_t *)get_safe_page(GFP_ATOMIC);
-       if (!temp_level4_pgt)
+       pgd = (pgd_t *)get_safe_page(GFP_ATOMIC);
+       if (!pgd)
                return -ENOMEM;
 
        /* Prepare a temporary mapping for the kernel text */
-       result = set_up_temporary_text_mapping();
+       result = set_up_temporary_text_mapping(pgd);
        if (result)
                return result;
 
@@ -107,13 +108,12 @@ static int set_up_temporary_mappings(void)
                mstart = pfn_mapped[i].start << PAGE_SHIFT;
                mend   = pfn_mapped[i].end << PAGE_SHIFT;
 
-               result = kernel_ident_mapping_init(&info, temp_level4_pgt,
-                                                  mstart, mend);
-
+               result = kernel_ident_mapping_init(&info, pgd, mstart, mend);
                if (result)
                        return result;
        }
 
+       temp_level4_pgt = (unsigned long)pgd - __PAGE_OFFSET;
        return 0;
 }