x86: clean up memory corruption check and add more kernel parameters

[linux-2.6-omap-h63xx.git] / Documentation / kernel-parameters.txt

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index df48af505d15466b9f2312cda9feb7135ad5155c..6a2629d00598989182d523f1701de6beb90c7401 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -360,11 +360,6 @@ and is between 256 and 4096 characters. It is defined in the file
                        Format: <io>,<irq>,<mode>
                        See header of drivers/net/hamradio/baycom_ser_hdx.c.
 
-       bios_corruption_check=0/1 [X86]
-                       Some BIOSes seem to corrupt the first 64k of memory
-                       when doing things like suspend/resume.  Setting this
-                       option will scan the memory looking for corruption.
-
        boot_delay=     Milliseconds to delay each printk during boot.
                        Values larger than 10 seconds (10000) are changed to
                        no delay (0).
@@ -1233,6 +1228,29 @@ and is between 256 and 4096 characters. It is defined in the file
                                 or
                                 memmap=0x10000$0x18690000
 
+       memory_corruption_check=0/1 [X86]
+                       Some BIOSes seem to corrupt the first 64k of
+                       memory when doing things like suspend/resume.
+                       Setting this option will scan the memory
+                       looking for corruption.  Enabling this will
+                       both detect corruption and prevent the kernel
+                       from using the memory being corrupted.
+                       However, its intended as a diagnostic tool; if
+                       repeatable BIOS-originated corruption always
+                       affects the same memory, you can use memmap=
+                       to prevent the kernel from using that memory.
+
+       memory_corruption_check_size=size [X86]
+                       By default it checks for corruption in the low
+                       64k, making this memory unavailable for normal
+                       use.  Use this parameter to scan for
+                       corruption in more or less memory.
+
+       memory_corruption_check_period=seconds [X86]
+                       By default it checks for corruption every 60
+                       seconds.  Use this parameter to check at some
+                       other rate.  0 disables periodic checking.
+
        memtest=        [KNL,X86] Enable memtest
                        Format: <integer>
                        range: 0,4 : pattern number