i386: convert hardware exception 6 to an interrupt gate

Handle invalid opcode exception with interrupt initially off.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/traps_32.c

@@ -635,7 +635,7 @@ void do_##name(struct pt_regs *regs, long error_code)			\
 DO_VM86_ERROR_INFO(0, SIGFPE, "divide error", divide_error, FPE_INTDIV, regs->ip)
 DO_VM86_ERROR(4, SIGSEGV, "overflow", overflow)
 DO_VM86_ERROR(5, SIGSEGV, "bounds", bounds)
-DO_TRAP_INFO(6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip, 0)
+DO_ERROR_INFO(6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip, 0)
 DO_TRAP(9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun)
 DO_TRAP(10, SIGSEGV, "invalid TSS", invalid_TSS)
 DO_TRAP(11, SIGBUS, "segment not present", segment_not_present)
@@ -1254,7 +1254,7 @@ void __init trap_init(void)
 	set_system_intr_gate(3, &int3); /* int3 can be called from all */
 	set_system_intr_gate(4, &overflow); /* int4 can be called from all */
 	set_intr_gate(5, &bounds);
-	set_trap_gate(6, &invalid_op);
+	set_intr_gate(6, &invalid_op);
 	set_trap_gate(7, &device_not_available);
 	set_task_gate(8, GDT_ENTRY_DOUBLEFAULT_TSS);
 	set_trap_gate(9, &coprocessor_segment_overrun);