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-rw-r--r--Documentation/x86_64/boot-options.txt8
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 85f51e5a749f..7500aad95f3c 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -149,7 +149,13 @@ 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
+ gives two 512M nodes, a 1024M node, and four 256M nodes. The
+ remaining system RAM is allocated to an additional node.
numa=hotadd=percent
Only allow hotadd memory to preallocate page structures upto