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author | Thomas Gleixner <tglx@linutronix.de> | 2017-08-28 08:47:50 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-08-29 12:07:27 +0200 |
commit | 433f8924fa8e55a50ce57f3b8a33ed095c405644 (patch) | |
tree | 356eef1f4e9dc406d4b1535a1253cf97c010985d /arch/x86/kernel/traps.c | |
parent | 3318e9744244a415ee9481ca7e54234caf5e12c5 (diff) | |
download | op-kernel-dev-433f8924fa8e55a50ce57f3b8a33ed095c405644.zip op-kernel-dev-433f8924fa8e55a50ce57f3b8a33ed095c405644.tar.gz |
x86/idt: Switch early trap init to IDT tables
Add the initialization table for the early trap setup and replace the early
trap init code.
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/20170828064958.929139008@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/traps.c')
-rw-r--r-- | arch/x86/kernel/traps.c | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c index 41f4cd3..835c7e8 100644 --- a/arch/x86/kernel/traps.c +++ b/arch/x86/kernel/traps.c @@ -923,33 +923,6 @@ dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code) } #endif -/* Set of traps needed for early debugging. */ -void __init early_trap_init(void) -{ - /* - * Don't use IST to set DEBUG_STACK as it doesn't work until TSS - * is ready in cpu_init() <-- trap_init(). Before trap_init(), - * CPU runs at ring 0 so it is impossible to hit an invalid - * stack. Using the original stack works well enough at this - * early stage. DEBUG_STACK will be equipped after cpu_init() in - * trap_init(). - */ - set_intr_gate(X86_TRAP_DB, debug); - /* int3 can be called from all */ - set_system_intr_gate(X86_TRAP_BP, &int3); -#ifdef CONFIG_X86_32 - set_intr_gate(X86_TRAP_PF, page_fault); -#endif - load_idt(&idt_descr); -} - -void __init early_trap_pf_init(void) -{ -#ifdef CONFIG_X86_64 - set_intr_gate(X86_TRAP_PF, page_fault); -#endif -} - void __init trap_init(void) { int i; |