i386: convert hardware exception 11 to an interrupt gate

Handle segment not present 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

@@ -639,7 +639,7 @@ DO_VM86_ERROR(5, SIGSEGV, "bounds", bounds)
 DO_ERROR_INFO(6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip, 0)
 DO_ERROR(9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun)
 DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS)
-DO_TRAP(11, SIGBUS, "segment not present", segment_not_present)
+DO_ERROR(11, SIGBUS, "segment not present", segment_not_present)
 DO_TRAP(12, SIGBUS, "stack segment", stack_segment)
 DO_TRAP_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0, 0)
 DO_TRAP_INFO(32, SIGILL, "iret exception", iret_error, ILL_BADSTK, 0, 1)
@@ -1271,7 +1271,7 @@ void __init trap_init(void)
 	set_task_gate(8, GDT_ENTRY_DOUBLEFAULT_TSS);
 	set_intr_gate(9, &coprocessor_segment_overrun);
 	set_intr_gate(10, &invalid_TSS);
-	set_trap_gate(11, &segment_not_present);
+	set_intr_gate(11, &segment_not_present);
 	set_trap_gate(12, &stack_segment);
 	set_trap_gate(13, &general_protection);
 	set_intr_gate(14, &page_fault);