diff options
Diffstat (limited to 'arch/x86/mm/cpu_entry_area.c')
| -rw-r--r-- | arch/x86/mm/cpu_entry_area.c | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/arch/x86/mm/cpu_entry_area.c b/arch/x86/mm/cpu_entry_area.c index 076ebdce9bd4..12d7e7fb4efd 100644 --- a/arch/x86/mm/cpu_entry_area.c +++ b/arch/x86/mm/cpu_entry_area.c @@ -15,7 +15,6 @@ static DEFINE_PER_CPU_PAGE_ALIGNED(struct entry_stack_page, entry_stack_storage) #ifdef CONFIG_X86_64 static DEFINE_PER_CPU_PAGE_ALIGNED(char, exception_stacks [(N_EXCEPTION_STACKS - 1) * EXCEPTION_STKSZ + DEBUG_STKSZ]); -static DEFINE_PER_CPU(struct kcore_list, kcore_entry_trampoline); #endif struct cpu_entry_area *get_cpu_entry_area(int cpu) @@ -83,8 +82,6 @@ static void percpu_setup_debug_store(int cpu) static void __init setup_cpu_entry_area(int cpu) { #ifdef CONFIG_X86_64 - extern char _entry_trampoline[]; - /* On 64-bit systems, we use a read-only fixmap GDT and TSS. */ pgprot_t gdt_prot = PAGE_KERNEL_RO; pgprot_t tss_prot = PAGE_KERNEL_RO; @@ -146,43 +143,10 @@ static void __init setup_cpu_entry_area(int cpu) cea_map_percpu_pages(&get_cpu_entry_area(cpu)->exception_stacks, &per_cpu(exception_stacks, cpu), sizeof(exception_stacks) / PAGE_SIZE, PAGE_KERNEL); - - cea_set_pte(&get_cpu_entry_area(cpu)->entry_trampoline, - __pa_symbol(_entry_trampoline), PAGE_KERNEL_RX); - /* - * The cpu_entry_area alias addresses are not in the kernel binary - * so they do not show up in /proc/kcore normally. This adds entries - * for them manually. - */ - kclist_add_remap(&per_cpu(kcore_entry_trampoline, cpu), - _entry_trampoline, - &get_cpu_entry_area(cpu)->entry_trampoline, PAGE_SIZE); #endif percpu_setup_debug_store(cpu); } -#ifdef CONFIG_X86_64 -int arch_get_kallsym(unsigned int symnum, unsigned long *value, char *type, - char *name) -{ - unsigned int cpu, ncpu = 0; - - if (symnum >= num_possible_cpus()) - return -EINVAL; - - for_each_possible_cpu(cpu) { - if (ncpu++ >= symnum) - break; - } - - *value = (unsigned long)&get_cpu_entry_area(cpu)->entry_trampoline; - *type = 't'; - strlcpy(name, "__entry_SYSCALL_64_trampoline", KSYM_NAME_LEN); - - return 0; -} -#endif - static __init void setup_cpu_entry_area_ptes(void) { #ifdef CONFIG_X86_32 |