linux-kernel - [tip:x86/irq] x86/cpu: Remove orig

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Date:   Wed, 17 Apr 2019 07:13:51 -0700
From:   tip-bot for Thomas Gleixner <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     hpa@...or.com, jpoimboe@...hat.com, x86@...nel.org,
        chang.seok.bae@...el.com, bp@...e.de, konrad.wilk@...cle.com,
        tglx@...utronix.de, mingo@...nel.org, jgross@...e.com,
        kernelfans@...il.com, luto@...nel.org, ndesaulniers@...gle.com,
        peterz@...radead.org, sean.j.christopherson@...el.com,
        linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        vbabka@...e.cz, puwen@...on.cn, jkosina@...e.cz, mingo@...hat.com,
        linux@...inikbrodowski.net, dave.hansen@...ux.intel.com
Subject: [tip:x86/irq] x86/cpu: Remove orig_ist array

Commit-ID:  4d68c3d0ecd5fcba8876e8a58ac41ffb360de43e
Gitweb:     https://git.kernel.org/tip/4d68c3d0ecd5fcba8876e8a58ac41ffb360de43e
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Sun, 14 Apr 2019 17:59:54 +0200
Committer:  Borislav Petkov <bp@...e.de>
CommitDate: Wed, 17 Apr 2019 14:44:17 +0200

x86/cpu: Remove orig_ist array

All users gone.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: "Chang S. Bae" <chang.seok.bae@...el.com>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Dominik Brodowski <linux@...inikbrodowski.net>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Jiri Kosina <jkosina@...e.cz>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Juergen Gross <jgross@...e.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Nick Desaulniers <ndesaulniers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Pingfan Liu <kernelfans@...il.com>
Cc: Pu Wen <puwen@...on.cn>
Cc: Sean Christopherson <sean.j.christopherson@...el.com>
Cc: Vlastimil Babka <vbabka@...e.cz>
Cc: x86-ml <x86@...nel.org>
Link: https://lkml.kernel.org/r/20190414160145.151435667@linutronix.de
---
 arch/x86/include/asm/processor.h | 9 ---------
 arch/x86/kernel/cpu/common.c     | 6 ------
 2 files changed, 15 deletions(-)

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 2bb3a648fc12..8fcfcd1a8375 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -374,16 +374,7 @@ DECLARE_PER_CPU(unsigned long, cpu_current_top_of_stack);
 #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];
 	/*
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 4b01b71415f5..8243f198fb7f 100644
--- 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);