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-rw-r--r--Documentation/x86_64/boot-options.txt14
1 files changed, 9 insertions, 5 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 12a9aacecaa..6177d881983 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -153,11 +153,15 @@ NUMA
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. If
- the last character of CMDLINE is a *, the remaining system RAM
- is instead divided up equally among its coefficient.
+ 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