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x86/idt: Move IST stack based traps to table init

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Initialize the IST based traps via a table.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20170828064959.091328949@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner
2017-08-28 08:47:52 +02:00
committed by Ingo Molnar
parent 0a30908b91
commit 90f6225fba
3 changed files with 25 additions and 8 deletions
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9
arch/x86/kernel/traps.c
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@@ -979,14 +979,7 @@ void __init trap_init(void)
*/
cpu_init();
/*
* X86_TRAP_DB and X86_TRAP_BP have been set
* in early_trap_init(). However, ITS works only after
* cpu_init() loads TSS. See comments in early_trap_init().
*/
set_intr_gate_ist(X86_TRAP_DB, &debug, DEBUG_STACK);
/* int3 can be called from all */
set_system_intr_gate_ist(X86_TRAP_BP, &int3, DEBUG_STACK);
idt_setup_ist_traps();
x86_init.irqs.trap_init();