Merge branch 'for-2.6.25' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/pasem...

[linux-2.6-omap-h63xx.git] / Documentation / x86_64 / boot-options.txt

diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 85f51e5a749ff5a4367f65792350563fe6e84da8..945311840a10d29be3f8c680f1124a01e8cd4bed 100644 (file)
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -14,9 +14,11 @@ Machine check
    mce=nobootlog
                Disable boot machine check logging.
    mce=tolerancelevel (number)
-               0: always panic, 1: panic if deadlock possible,
-               2: try to avoid panic, 3: never panic or exit (for testing)
-               default is 1
+               0: always panic on uncorrected errors, log corrected errors
+               1: panic or SIGBUS on uncorrected errors, log corrected errors
+               2: SIGBUS or log uncorrected errors, log corrected errors
+               3: never panic or SIGBUS, log all errors (for testing only)
+               Default is 1
                Can be also set using sysfs which is preferable.
 
    nomce (for compatibility with i386): same as mce=off
@@ -134,12 +136,6 @@ Non Executable Mappings
 
 SMP
 
-  nosmp        Only use a single CPU
-
-  maxcpus=NUMBER only use upto NUMBER CPUs
-
-  cpumask=MASK   only use cpus with bits set in mask
-
   additional_cpus=NUM Allow NUM more CPUs for hotplug
                 (defaults are specified by the BIOS, see Documentation/x86_64/cpu-hotplug-spec)
 
@@ -149,7 +145,19 @@ NUMA
 
   numa=noacpi   Don't parse the SRAT table for NUMA setup
 
-  numa=fake=X   Fake X nodes and ignore NUMA setup of the actual machine.
+  numa=fake=CMDLINE
+               If a number, fakes CMDLINE nodes and ignores NUMA setup of the
+               actual machine.  Otherwise, system memory is configured
+               depending on the sizes and coefficients listed.  For example:
+                       numa=fake=2*512,1024,4*256,*128
+               gives two 512M nodes, a 1024M node, four 256M nodes, and the
+               rest split into 128M chunks.  If the last character of CMDLINE
+               is a *, the remaining memory is divided up equally among its
+               coefficient:
+                       numa=fake=2*512,2*
+               gives two 512M nodes and the rest split into two nodes.
+               Otherwise, the remaining system RAM is allocated to an
+               additional node.
 
   numa=hotadd=percent
                Only allow hotadd memory to preallocate page structures upto