diff options
Diffstat (limited to 'arch/i386/power')
| -rw-r--r-- | arch/i386/power/cpu.c | 1 | ||||
| -rw-r--r-- | arch/i386/power/suspend.c | 14 |
2 files changed, 15 insertions, 0 deletions
diff --git a/arch/i386/power/cpu.c b/arch/i386/power/cpu.c index 2c15500f8713..998fd3ec0d68 100644 --- a/arch/i386/power/cpu.c +++ b/arch/i386/power/cpu.c @@ -21,6 +21,7 @@ unsigned long saved_context_eflags; void __save_processor_state(struct saved_context *ctxt) { + mtrr_save_fixed_ranges(NULL); kernel_fpu_begin(); /* diff --git a/arch/i386/power/suspend.c b/arch/i386/power/suspend.c index db5e98d2eb73..a0020b913f31 100644 --- a/arch/i386/power/suspend.c +++ b/arch/i386/power/suspend.c @@ -16,6 +16,9 @@ /* Defined in arch/i386/power/swsusp.S */ extern int restore_image(void); +/* References to section boundaries */ +extern const void __nosave_begin, __nosave_end; + /* Pointer to the temporary resume page tables */ pgd_t *resume_pg_dir; @@ -156,3 +159,14 @@ int swsusp_arch_resume(void) 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); +} |