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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Andy Lutomirski <luto@kernel.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>
Subject: [patch 13/14] x86/cpu: Remove orig_ist array
Date: Sun, 31 Mar 2019 23:40:33 +0200	[thread overview]
Message-ID: <20190331215135.946570217@linutronix.de> (raw)
In-Reply-To: 20190331214020.836098943@linutronix.de

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);
 



  parent reply	other threads:[~2019-03-31 22:10 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-31 21:40 [patch 00/14] x86/exceptions: Add guard patches to IST stacks Thomas Gleixner
2019-03-31 21:40 ` [patch 01/14] x86/irq/64: Limit IST stack overflow check to #DB stack Thomas Gleixner
2019-04-01 18:03   ` Borislav Petkov
2019-04-02 16:34   ` Sean Christopherson
2019-03-31 21:40 ` [patch 02/14] x86/idt: Remove unused macro SISTG Thomas Gleixner
2019-04-01  4:04   ` Andy Lutomirski
2019-03-31 21:40 ` [patch 03/14] x86/exceptions: Remove unused stack defines on 32bit Thomas Gleixner
2019-03-31 21:40 ` [patch 04/14] x86/exceptions: Make IST index zero based Thomas Gleixner
2019-04-01  7:30   ` Peter Zijlstra
2019-04-01  7:33     ` Thomas Gleixner
2019-04-02 16:49   ` Sean Christopherson
2019-04-03 16:35   ` Borislav Petkov
2019-03-31 21:40 ` [patch 05/14] x86/cpu_entry_area: Cleanup setup functions Thomas Gleixner
2019-03-31 21:40 ` [patch 06/14] x86/exceptions: Add structs for exception stacks Thomas Gleixner
2019-03-31 21:40 ` [patch 07/14] x86/cpu_entry_area: Prepare for IST guard pages Thomas Gleixner
2019-03-31 21:40 ` [patch 08/14] x86/cpu_entry_area: Provide exception stack accessor Thomas Gleixner
2019-03-31 21:40 ` [patch 09/14] x86/traps: Use cpu_entry_area instead of orig_ist Thomas Gleixner
2019-03-31 21:40 ` [patch 10/14] x86/irq/64: Use cpu entry area " Thomas Gleixner
2019-03-31 21:40 ` [patch 11/14] x86/dumpstack/64: Use cpu_entry_area " Thomas Gleixner
2019-03-31 21:40 ` [patch 12/14] x86/cpu: Prepare TSS.IST setup for guard pages Thomas Gleixner
2019-04-02 16:57   ` Sean Christopherson
2019-03-31 21:40 ` Thomas Gleixner [this message]
2019-03-31 21:40 ` [patch 14/14] x86/exceptions: Enable IST " Thomas Gleixner
2019-04-02 10:19   ` [patch 15/14] x86/dumpstack/64: Speedup in_exception_stack() Thomas Gleixner
2019-04-02 15:43     ` Josh Poimboeuf
2019-04-02 15:48       ` Thomas Gleixner
2019-04-02 15:51         ` Josh Poimboeuf
2019-04-02 15:53           ` Josh Poimboeuf
2019-04-03  8:08           ` Peter Zijlstra
2019-04-03  8:10             ` Peter Zijlstra
2019-04-03 15:11               ` Josh Poimboeuf
2019-04-02 16:11         ` Andy Lutomirski
2019-04-02 18:27           ` Thomas Gleixner
2019-04-02 19:29             ` Thomas Gleixner
2019-04-03  0:36               ` Andy Lutomirski
2019-04-03 16:26                 ` Thomas Gleixner
2019-04-03 19:42                   ` Thomas Gleixner
2019-04-04  0:03                     ` Andy Lutomirski
2019-04-02 19:02         ` Rasmus Villemoes
2019-04-02 19:21           ` Thomas Gleixner
2019-04-03  8:02       ` Peter Zijlstra
2019-04-01  4:03 ` [patch 00/14] x86/exceptions: Add guard patches to IST stacks Andy Lutomirski
2019-04-03 16:30   ` Thomas Gleixner

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