[patch V3 18/32] x86/cpu: Remove orig_ist array

Thomas Gleixner
2019-04-14T16:02:52Z

All users gone.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/include/asm/processor.h | 9 ---------
arch/x86/kernel/cpu/common.c | 6 ------
2 files changed, 15 deletions(-)

--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -374,16 +374,7 @@ DECLARE_PER_CPU(unsigned long, cpu_curre
#define cpu_current_top_of_stack cpu_tss_rw.x86_tss.sp1
#endif

-/*
- * Save the original ist values for checking stack pointers during debugging
- */
-struct orig_ist {
- unsigned long ist[7];
-};
-
#ifdef CONFIG_X86_64
-DECLARE_PER_CPU(struct orig_ist, orig_ist);
-
union irq_stack_union {
char irq_stack[IRQ_STACK_SIZE];
/*
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1549,12 +1549,6 @@ void syscall_init(void)
X86_EFLAGS_IOPL|X86_EFLAGS_AC|X86_EFLAGS_NT);
}

-/*
- * Copies of the original ist values from the tss are only accessed during
- * debugging, no special alignment required.
- */
-DEFINE_PER_CPU(struct orig_ist, orig_ist);
-
static DEFINE_PER_CPU(unsigned long, debug_stack_addr);
DEFINE_PER_CPU(int, debug_stack_usage);