i386: convert hardware exception 4 to an interrupt gate

Handle overflow exception with interrupt initially off.

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

diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c
index e3c4809f414a8efea08eddf556481adf083896fa..6f685e61325aff7651ec943072fa15960d311b3d 100644 (file)
--- a/arch/x86/kernel/traps_32.c
+++ b/arch/x86/kernel/traps_32.c
@@ -633,7 +633,7 @@ 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_TRAP(4, SIGSEGV, "overflow", overflow)
+DO_VM86_ERROR(4, SIGSEGV, "overflow", overflow)
 DO_VM86_TRAP(5, SIGSEGV, "bounds", bounds)
 DO_TRAP_INFO(6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->ip, 0)
 DO_TRAP(9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun)
@@ -1252,7 +1252,7 @@ void __init trap_init(void)
        set_intr_gate(1, &debug);
        set_intr_gate(2, &nmi);
        set_system_intr_gate(3, &int3); /* int3 can be called from all */
-       set_system_gate(4, &overflow); /* int4 can be called from all */
+       set_system_intr_gate(4, &overflow); /* int4 can be called from all */
        set_trap_gate(5, &bounds);
        set_trap_gate(6, &invalid_op);
        set_trap_gate(7, &device_not_available);