2 files changed, 1 insertions, 52 deletions

diff --git a/arch/x86/include/asm/debugreg.h b/arch/x86/include/asm/debugreg.h
index 3e1c5021d0f8..42fc35d86535 100644
--- a/arch/x86/include/asm/debugreg.h
+++ b/arch/x86/include/asm/debugreg.h
@@ -94,25 +94,6 @@ extern void aout_dump_debugregs(struct user *dump);
 
 extern void hw_breakpoint_restore(void);
 
-#ifdef CONFIG_X86_64
-DECLARE_PER_CPU(int, debug_stack_usage);
-static inline void debug_stack_usage_inc(void)
-{
-	__this_cpu_inc(debug_stack_usage);
-}
-static inline void debug_stack_usage_dec(void)
-{
-	__this_cpu_dec(debug_stack_usage);
-}
-void debug_stack_set_zero(void);
-void debug_stack_reset(void);
-#else /* !X86_64 */
-static inline void debug_stack_set_zero(void) { }
-static inline void debug_stack_reset(void) { }
-static inline void debug_stack_usage_inc(void) { }
-static inline void debug_stack_usage_dec(void) { }
-#endif /* X86_64 */
-
 static __always_inline unsigned long local_db_save(void)
 {
 	unsigned long dr7;
diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
index d6c3d346c63a..07632f31147a 100644
--- a/arch/x86/include/asm/desc.h
+++ b/arch/x86/include/asm/desc.h
@@ -42,8 +42,6 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in
 
 extern struct desc_ptr idt_descr;
 extern gate_desc idt_table[];
-extern const struct desc_ptr debug_idt_descr;
-extern gate_desc debug_idt_table[];
 
 struct gdt_page {
 	struct desc_struct gdt[GDT_ENTRIES];
@@ -390,31 +388,6 @@ void alloc_intr_gate(unsigned int n, const void *addr);
 
 extern unsigned long system_vectors[];
 
-#ifdef CONFIG_X86_64
-DECLARE_PER_CPU(u32, debug_idt_ctr);
-static __always_inline bool is_debug_idt_enabled(void)
-{
-	if (this_cpu_read(debug_idt_ctr))
-		return true;
-
-	return false;
-}
-
-static __always_inline void load_debug_idt(void)
-{
-	load_idt((const struct desc_ptr *)&debug_idt_descr);
-}
-#else
-static inline bool is_debug_idt_enabled(void)
-{
-	return false;
-}
-
-static inline void load_debug_idt(void)
-{
-}
-#endif
-
 /*
  * The load_current_idt() must be called with interrupts disabled
  * to avoid races. That way the IDT will always be set back to the expected
@@ -424,10 +397,7 @@ static inline void load_debug_idt(void)
  */
 static __always_inline void load_current_idt(void)
 {
-	if (is_debug_idt_enabled())
-		load_debug_idt();
-	else
-		load_idt((const struct desc_ptr *)&idt_descr);
+	load_idt((const struct desc_ptr *)&idt_descr);
 }
 
 extern void idt_setup_early_handler(void);
@@ -438,11 +408,9 @@ extern void idt_setup_apic_and_irq_gates(void);
 #ifdef CONFIG_X86_64
 extern void idt_setup_early_pf(void);
 extern void idt_setup_ist_traps(void);
-extern void idt_setup_debugidt_traps(void);
 #else
 static inline void idt_setup_early_pf(void) { }
 static inline void idt_setup_ist_traps(void) { }
-static inline void idt_setup_debugidt_traps(void) { }
 #endif
 
 extern void idt_invalidate(void *addr);