1 files changed, 32 insertions, 1 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index bffffa4e8ee9..2c95cae8302b 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1396,7 +1396,20 @@ and is between 256 and 4096 characters. It is defined in the file
                         when a NMI is triggered.
                         Format: [state][,regs][,debounce][,die]
 
-        nmi_watchdog=   [KNL,BUGS=X86-32] Debugging features for SMP kernels
+        nmi_watchdog=   [KNL,BUGS=X86-32,X86-64] Debugging features for SMP kernels
+                        Format: [panic,][num]
+                        Valid num: 0,1,2
+                        0 - turn nmi_watchdog off
+                        1 - use the IO-APIC timer for the NMI watchdog
+                        2 - use the local APIC for the NMI watchdog using
+                        a performance counter. Note: This will use one performance
+                        counter and the local APIC's performance vector.
+                        When panic is specified panic when an NMI watchdog timeout occurs.
+                        This is useful when you use a panic=... timeout and need the box
+                        quickly up again.
+                        Instead of 1 and 2 it is possible to use the following
+                        symbolic names: lapic and ioapic
+                        Example: nmi_watchdog=2 or nmi_watchdog=panic,lapic
 
         no387           [BUGS=X86-32] Tells the kernel to use the 387 maths
                         emulation library even if a 387 maths coprocessor
@@ -1633,6 +1646,17 @@ and is between 256 and 4096 characters. It is defined in the file
                 nomsi           [MSI] If the PCI_MSI kernel config parameter is
                                 enabled, this kernel boot option can be used to
                                 disable the use of MSI interrupts system-wide.
+                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.
+                noioapicreroute [APIC] Disable workaround that uses the
+                                boot IRQ equivalent of an IRQ that connects to
+                                a chipset where boot IRQs cannot be disabled.
+                                The opposite of ioapicreroute.
                 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
@@ -2262,6 +2286,13 @@ and is between 256 and 4096 characters. It is defined in the file
                         Format:
                         <io>,<irq>,<dma>,<dma2>,<sb_io>,<sb_irq>,<sb_dma>,<mpu_io>,<mpu_irq>
 
+        tsc=            Disable clocksource-must-verify flag for TSC.
+                        Format: <string>
+                        [x86] reliable: mark tsc clocksource as reliable, this
+                        disables clocksource verification at runtime.
+                        Used to enable high-resolution timer mode on older
+                        hardware, and in virtualized environment.
+
         turbografx.map[2|3]=    [HW,JOY]
                         TurboGraFX parallel port interface
                         Format: