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List:       linux-kernel
Subject:    [patch 13/14] x86/cpu: Remove orig_ist array
From:       Thomas Gleixner <tglx () linutronix ! de>
Date:       2019-03-31 21:40:33
Message-ID: 20190331215135.946570217 () linutronix ! de
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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);
 


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