x86/process/64: Move cpu_current_top_of_stack out of TSS

[linux-2.6-microblaze.git] / arch / x86 / kernel / cpu / common.c

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index ab640ab..3401078 100644 (file)
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -482,7 +482,7 @@ static __always_inline void setup_pku(struct cpuinfo_x86 *c)
        if (pk)
                pk->pkru = init_pkru_value;
        /*
-        * Seting X86_CR4_PKE will cause the X86_FEATURE_OSPKE
+        * Setting X86_CR4_PKE will cause the X86_FEATURE_OSPKE
         * cpuid bit to be set.  We need to ensure that we
         * update that bit in this CPU's "cpu_info".
         */
@@ -1404,7 +1404,7 @@ static void detect_null_seg_behavior(struct cpuinfo_x86 *c)
         * where GS is unused by the prev and next threads.
         *
         * Since neither vendor documents this anywhere that I can see,
-        * detect it directly instead of hardcoding the choice by
+        * detect it directly instead of hard-coding the choice by
         * vendor.
         *
         * I've designated AMD's behavior as the "bug" because it's
@@ -1748,6 +1748,8 @@ DEFINE_PER_CPU(bool, hardirq_stack_inuse);
 DEFINE_PER_CPU(int, __preempt_count) = INIT_PREEMPT_COUNT;
 EXPORT_PER_CPU_SYMBOL(__preempt_count);
 
+DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) = TOP_OF_INIT_STACK;
+
 /* May not be marked __init: used by software suspend */
 void syscall_init(void)
 {