i386: convert hardware exception 9 to an interrupt gate

Handle coprocessor segment overrun exception with interrupt initially off.
Signed-off-by: NAlexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/traps_32.c

@@ -637,7 +637,7 @@ 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_ERROR_INFO(6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip, 0)
-DO_TRAP(9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun)
+DO_ERROR(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)
 DO_TRAP(12, SIGBUS, "stack segment", stack_segment)
@@ -1269,7 +1269,7 @@ void __init trap_init(void)
 	set_intr_gate(6, &invalid_op);
 	set_intr_gate(7, &device_not_available);
 	set_task_gate(8, GDT_ENTRY_DOUBLEFAULT_TSS);
-	set_trap_gate(9, &coprocessor_segment_overrun);
+	set_intr_gate(9, &coprocessor_segment_overrun);
 	set_trap_gate(10, &invalid_TSS);
 	set_trap_gate(11, &segment_not_present);
 	set_trap_gate(12, &stack_segment);