1 files changed, 10 insertions, 1 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8dd7248508a9..3a0009e03d14 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -455,7 +455,7 @@ and is between 256 and 4096 characters. It is defined in the file
                         [ARM] imx_timer1,OSTS,netx_timer,mpu_timer2,
                                 pxa_timer,timer3,32k_counter,timer0_1
                         [AVR32] avr32
-                        [X86-32] pit,hpet,tsc,vmi-timer;
+                        [X86-32] pit,hpet,tsc;
                                 scx200_hrt on Geode; cyclone on IBM x440
                         [MIPS] MIPS
                         [PARISC] cr16
@@ -2153,6 +2153,11 @@ and is between 256 and 4096 characters. It is defined in the file
                         Reserves a hole at the top of the kernel virtual
                         address space.
 
+        reservelow=     [X86]
+                        Format: nn[K]
+                        Set the amount of memory to reserve for BIOS at
+                        the bottom of the address space.
+
         reset_devices   [KNL] Force drivers to reset the underlying device
                         during initialization.
 
@@ -2435,6 +2440,10 @@ and is between 256 and 4096 characters. It is defined in the file
                         disables clocksource verification at runtime.
                         Used to enable high-resolution timer mode on older
                         hardware, and in virtualized environment.
+                        [x86] noirqtime: Do not use TSC to do irq accounting.
+                        Used to run time disable IRQ_TIME_ACCOUNTING on any
+                        platforms where RDTSC is slow and this accounting
+                        can add overhead.
 
         turbografx.map[2|3]=    [HW,JOY]
                         TurboGraFX parallel port interface