diff options
Diffstat (limited to 'arch/x86/kernel/cpu/common.c')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index cafb6bd90d10..408245c2eead 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -2015,6 +2015,7 @@ __setup("clearcpuid=", setup_clearcpuid); DEFINE_PER_CPU_ALIGNED(struct pcpu_hot, pcpu_hot) = { .current_task = &init_task, .preempt_count = INIT_PREEMPT_COUNT, + .top_of_stack = TOP_OF_INIT_STACK, }; EXPORT_PER_CPU_SYMBOL(pcpu_hot); @@ -2026,8 +2027,6 @@ EXPORT_PER_CPU_SYMBOL_GPL(fixed_percpu_data); DEFINE_PER_CPU(void *, hardirq_stack_ptr); DEFINE_PER_CPU(bool, hardirq_stack_inuse); -DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) = TOP_OF_INIT_STACK; - static void wrmsrl_cstar(unsigned long val) { /* @@ -2078,15 +2077,6 @@ void syscall_init(void) #else /* CONFIG_X86_64 */ -/* - * On x86_32, vm86 modifies tss.sp0, so sp0 isn't a reliable way to find - * the top of the kernel stack. Use an extra percpu variable to track the - * top of the kernel stack directly. - */ -DEFINE_PER_CPU(unsigned long, cpu_current_top_of_stack) = - (unsigned long)&init_thread_union + THREAD_SIZE; -EXPORT_PER_CPU_SYMBOL(cpu_current_top_of_stack); - #ifdef CONFIG_STACKPROTECTOR DEFINE_PER_CPU(unsigned long, __stack_chk_guard); EXPORT_PER_CPU_SYMBOL(__stack_chk_guard); |