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diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1aebe9dffbaa..df262b3c3d6e 100644
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+++ b/Documentation/kernel-parameters.txt
@@ -1521,6 +1521,10 @@ and is between 256 and 4096 characters. It is defined in the file
noioapicquirk [APIC] Disable all boot interrupt quirks.
Safety option to keep boot IRQs enabled. This
should never be necessary.
+ ioapicreroute [APIC] Enable rerouting of boot IRQs to the
+ primary IO-APIC for bridges that cannot disable
+ boot IRQs. This fixes a source of spurious IRQs
+ when the system masks IRQs.
biosirq [X86-32] Use PCI BIOS calls to get the interrupt
routing table. These calls are known to be buggy
on several machines and they hang the machine