diff options
Diffstat (limited to 'arch/i386/power/cpu.c')
-rw-r--r-- | arch/i386/power/cpu.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/arch/i386/power/cpu.c b/arch/i386/power/cpu.c index 6f521cf19a13..0e6b45b61251 100644 --- a/arch/i386/power/cpu.c +++ b/arch/i386/power/cpu.c | |||
@@ -22,9 +22,11 @@ | |||
22 | #include <linux/device.h> | 22 | #include <linux/device.h> |
23 | #include <linux/suspend.h> | 23 | #include <linux/suspend.h> |
24 | #include <linux/acpi.h> | 24 | #include <linux/acpi.h> |
25 | |||
25 | #include <asm/uaccess.h> | 26 | #include <asm/uaccess.h> |
26 | #include <asm/acpi.h> | 27 | #include <asm/acpi.h> |
27 | #include <asm/tlbflush.h> | 28 | #include <asm/tlbflush.h> |
29 | #include <asm/processor.h> | ||
28 | 30 | ||
29 | static struct saved_context saved_context; | 31 | static struct saved_context saved_context; |
30 | 32 | ||
@@ -33,8 +35,6 @@ unsigned long saved_context_esp, saved_context_ebp; | |||
33 | unsigned long saved_context_esi, saved_context_edi; | 35 | unsigned long saved_context_esi, saved_context_edi; |
34 | unsigned long saved_context_eflags; | 36 | unsigned long saved_context_eflags; |
35 | 37 | ||
36 | extern void enable_sep_cpu(void *); | ||
37 | |||
38 | void __save_processor_state(struct saved_context *ctxt) | 38 | void __save_processor_state(struct saved_context *ctxt) |
39 | { | 39 | { |
40 | kernel_fpu_begin(); | 40 | kernel_fpu_begin(); |
@@ -44,7 +44,6 @@ void __save_processor_state(struct saved_context *ctxt) | |||
44 | */ | 44 | */ |
45 | asm volatile ("sgdt %0" : "=m" (ctxt->gdt_limit)); | 45 | asm volatile ("sgdt %0" : "=m" (ctxt->gdt_limit)); |
46 | asm volatile ("sidt %0" : "=m" (ctxt->idt_limit)); | 46 | asm volatile ("sidt %0" : "=m" (ctxt->idt_limit)); |
47 | asm volatile ("sldt %0" : "=m" (ctxt->ldt)); | ||
48 | asm volatile ("str %0" : "=m" (ctxt->tr)); | 47 | asm volatile ("str %0" : "=m" (ctxt->tr)); |
49 | 48 | ||
50 | /* | 49 | /* |
@@ -107,7 +106,6 @@ static void fix_processor_context(void) | |||
107 | 106 | ||
108 | void __restore_processor_state(struct saved_context *ctxt) | 107 | void __restore_processor_state(struct saved_context *ctxt) |
109 | { | 108 | { |
110 | |||
111 | /* | 109 | /* |
112 | * control registers | 110 | * control registers |
113 | */ | 111 | */ |
@@ -117,6 +115,13 @@ void __restore_processor_state(struct saved_context *ctxt) | |||
117 | asm volatile ("movl %0, %%cr0" :: "r" (ctxt->cr0)); | 115 | asm volatile ("movl %0, %%cr0" :: "r" (ctxt->cr0)); |
118 | 116 | ||
119 | /* | 117 | /* |
118 | * now restore the descriptor tables to their proper values | ||
119 | * ltr is done i fix_processor_context(). | ||
120 | */ | ||
121 | asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); | ||
122 | asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); | ||
123 | |||
124 | /* | ||
120 | * segment registers | 125 | * segment registers |
121 | */ | 126 | */ |
122 | asm volatile ("movw %0, %%es" :: "r" (ctxt->es)); | 127 | asm volatile ("movw %0, %%es" :: "r" (ctxt->es)); |
@@ -125,18 +130,10 @@ void __restore_processor_state(struct saved_context *ctxt) | |||
125 | asm volatile ("movw %0, %%ss" :: "r" (ctxt->ss)); | 130 | asm volatile ("movw %0, %%ss" :: "r" (ctxt->ss)); |
126 | 131 | ||
127 | /* | 132 | /* |
128 | * now restore the descriptor tables to their proper values | ||
129 | * ltr is done i fix_processor_context(). | ||
130 | */ | ||
131 | asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit)); | ||
132 | asm volatile ("lidt %0" :: "m" (ctxt->idt_limit)); | ||
133 | asm volatile ("lldt %0" :: "m" (ctxt->ldt)); | ||
134 | |||
135 | /* | ||
136 | * sysenter MSRs | 133 | * sysenter MSRs |
137 | */ | 134 | */ |
138 | if (boot_cpu_has(X86_FEATURE_SEP)) | 135 | if (boot_cpu_has(X86_FEATURE_SEP)) |
139 | enable_sep_cpu(NULL); | 136 | enable_sep_cpu(); |
140 | 137 | ||
141 | fix_processor_context(); | 138 | fix_processor_context(); |
142 | do_fpu_end(); | 139 | do_fpu_end(); |