x86/irq: Seperate unused system vectors from spurious entry again

[platform/kernel/linux-rpi.git] / arch / x86 / entry / entry_32.S

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index 7b23431..44c6e6f 100644 (file)
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -1104,6 +1104,30 @@ ENTRY(irq_entries_start)
     .endr
 END(irq_entries_start)
 
+#ifdef CONFIG_X86_LOCAL_APIC
+       .align 8
+ENTRY(spurious_entries_start)
+    vector=FIRST_SYSTEM_VECTOR
+    .rept (NR_VECTORS - FIRST_SYSTEM_VECTOR)
+       pushl   $(~vector+0x80)                 /* Note: always in signed byte range */
+    vector=vector+1
+       jmp     common_spurious
+       .align  8
+    .endr
+END(spurious_entries_start)
+
+common_spurious:
+       ASM_CLAC
+       addl    $-0x80, (%esp)                  /* Adjust vector into the [-256, -1] range */
+       SAVE_ALL switch_stacks=1
+       ENCODE_FRAME_POINTER
+       TRACE_IRQS_OFF
+       movl    %esp, %eax
+       call    smp_spurious_interrupt
+       jmp     ret_from_intr
+ENDPROC(common_interrupt)
+#endif
+
 /*
  * the CPU automatically disables interrupts when executing an IRQ vector,
  * so IRQ-flags tracing has to follow that: