Commit 4d68c3d0 authored Apr 14, 2019 by Thomas Gleixner Committed by Borislav Petkov Apr 17, 2019

x86/cpu: Remove orig_ist array

All users gone.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: "Chang S. Bae" <chang.seok.bae@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pingfan Liu <kernelfans@gmail.com>
Cc: Pu Wen <puwen@hygon.cn>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190414160145.151435667@linutronix.de

parent f6ef7322

arch/x86/include/asm/processor.h

+0 −9

Original line number	Diff line number	Diff line
		@@ -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];
		/*

arch/x86/kernel/cpu/common.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -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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