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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 12a9aacecaae..6177d881983f 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -153,11 +153,15 @@ NUMA
153 If a number, fakes CMDLINE nodes and ignores NUMA setup of the 153 If a number, fakes CMDLINE nodes and ignores NUMA setup of the
154 actual machine. Otherwise, system memory is configured 154 actual machine. Otherwise, system memory is configured
155 depending on the sizes and coefficients listed. For example: 155 depending on the sizes and coefficients listed. For example:
156 numa=fake=2*512,1024,4*256 156 numa=fake=2*512,1024,4*256,*128
157 gives two 512M nodes, a 1024M node, and four 256M nodes. The 157 gives two 512M nodes, a 1024M node, four 256M nodes, and the
158 remaining system RAM is allocated to an additional node. If 158 rest split into 128M chunks. If the last character of CMDLINE
159 the last character of CMDLINE is a *, the remaining system RAM 159 is a *, the remaining memory is divided up equally among its
160 is instead divided up equally among its coefficient. 160 coefficient:
161 numa=fake=2*512,2*
162 gives two 512M nodes and the rest split into two nodes.
163 Otherwise, the remaining system RAM is allocated to an
164 additional node.
161 165
162 numa=hotadd=percent 166 numa=hotadd=percent
163 Only allow hotadd memory to preallocate page structures upto 167 Only allow hotadd memory to preallocate page structures upto