diff options
Diffstat (limited to 'arch/i386/power/cpu.c')
| -rw-r--r-- | arch/i386/power/cpu.c | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/arch/i386/power/cpu.c b/arch/i386/power/cpu.c index cf337c673d92..0e6b45b61251 100644 --- a/arch/i386/power/cpu.c +++ b/arch/i386/power/cpu.c @@ -22,9 +22,11 @@ #include <linux/device.h> #include <linux/suspend.h> #include <linux/acpi.h> + #include <asm/uaccess.h> #include <asm/acpi.h> #include <asm/tlbflush.h> +#include <asm/processor.h> static struct saved_context saved_context; @@ -33,8 +35,6 @@ unsigned long saved_context_esp, saved_context_ebp; unsigned long saved_context_esi, saved_context_edi; unsigned long saved_context_eflags; -extern void enable_sep_cpu(void *); - void __save_processor_state(struct saved_context *ctxt) { kernel_fpu_begin(); @@ -44,7 +44,6 @@ void __save_processor_state(struct saved_context *ctxt) */ asm volatile ("sgdt %0" : "=m" (ctxt->gdt_limit)); asm volatile ("sidt %0" : "=m" (ctxt->idt_limit)); - asm volatile ("sldt %0" : "=m" (ctxt->ldt)); asm volatile ("str %0" : "=m" (ctxt->tr)); /* @@ -94,20 +93,19 @@ static void fix_processor_context(void) * Now maybe reload the debug registers */ if (current->thread.debugreg[7]){ - loaddebug(¤t->thread, 0); - loaddebug(¤t->thread, 1); - loaddebug(¤t->thread, 2); - loaddebug(¤t->thread, 3); - /* no 4 and 5 */ - loaddebug(¤t->thread, 6); - loaddebug(¤t->thread, 7); + set_debugreg(current->thread.debugreg[0], 0); + set_debugreg(current->thread.debugreg[1], 1); + set_debugreg(current->thread.debugreg[2], 2); + set_debugreg(current->thread.debugreg[3], 3); + /* no 4 and 5 */ + set_debugreg(current->thread.debugreg[6], 6); + set_debugreg(current->thread.debugreg[7], 7); } } void __restore_processor_state(struct saved_context *ctxt) { - /* * control registers */ @@ -117,6 +115,13 @@ void __restore_processor_state(struct saved_context *ctxt) asm volatile ("movl %0, %%cr0" :: "r" (ctxt->cr0)); /* + * now restore the descriptor tables to their proper values + * ltr is done i fix_processor_context(). + */ + asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); + asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); + + /* * segment registers */ asm volatile ("movw %0, %%es" :: "r" (ctxt->es)); @@ -125,18 +130,10 @@ void __restore_processor_state(struct saved_context *ctxt) asm volatile ("movw %0, %%ss" :: "r" (ctxt->ss)); /* - * now restore the descriptor tables to their proper values - * ltr is done i fix_processor_context(). - */ - asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); - asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); - asm volatile ("lldt %0" :: "m" (ctxt->ldt)); - - /* * sysenter MSRs */ if (boot_cpu_has(X86_FEATURE_SEP)) - enable_sep_cpu(NULL); + enable_sep_cpu(); fix_processor_context(); do_fpu_end(); |