diff options
Diffstat (limited to 'arch/x86/power/hibernate_32.c')
| -rw-r--r-- | arch/x86/power/hibernate_32.c | 52 |
1 files changed, 38 insertions, 14 deletions
diff --git a/arch/x86/power/hibernate_32.c b/arch/x86/power/hibernate_32.c index afc4ed7b1578..15695e30f982 100644 --- a/arch/x86/power/hibernate_32.c +++ b/arch/x86/power/hibernate_32.c @@ -14,9 +14,7 @@ #include <asm/pgtable.h> #include <asm/mmzone.h> #include <asm/sections.h> - -/* Defined in hibernate_asm_32.S */ -extern int restore_image(void); +#include <asm/suspend.h> /* Pointer to the temporary resume page tables */ pgd_t *resume_pg_dir; @@ -145,6 +143,32 @@ static inline void resume_init_first_level_page_table(pgd_t *pg_dir) #endif } +static int set_up_temporary_text_mapping(pgd_t *pgd_base) +{ + pgd_t *pgd; + pmd_t *pmd; + pte_t *pte; + + pgd = pgd_base + pgd_index(restore_jump_address); + + pmd = resume_one_md_table_init(pgd); + if (!pmd) + return -ENOMEM; + + if (boot_cpu_has(X86_FEATURE_PSE)) { + set_pmd(pmd + pmd_index(restore_jump_address), + __pmd((jump_address_phys & PMD_MASK) | pgprot_val(PAGE_KERNEL_LARGE_EXEC))); + } else { + pte = resume_one_page_table_init(pmd); + if (!pte) + return -ENOMEM; + set_pte(pte + pte_index(restore_jump_address), + __pte((jump_address_phys & PAGE_MASK) | pgprot_val(PAGE_KERNEL_EXEC))); + } + + return 0; +} + asmlinkage int swsusp_arch_resume(void) { int error; @@ -154,22 +178,22 @@ asmlinkage int swsusp_arch_resume(void) return -ENOMEM; resume_init_first_level_page_table(resume_pg_dir); + + error = set_up_temporary_text_mapping(resume_pg_dir); + if (error) + return error; + error = resume_physical_mapping_init(resume_pg_dir); if (error) return error; + temp_pgt = __pa(resume_pg_dir); + + error = relocate_restore_code(); + if (error) + return error; + /* We have got enough memory and from now on we cannot recover */ restore_image(); return 0; } - -/* - * pfn_is_nosave - check if given pfn is in the 'nosave' section - */ - -int pfn_is_nosave(unsigned long pfn) -{ - unsigned long nosave_begin_pfn = __pa_symbol(&__nosave_begin) >> PAGE_SHIFT; - unsigned long nosave_end_pfn = PAGE_ALIGN(__pa_symbol(&__nosave_end)) >> PAGE_SHIFT; - return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn); -} |