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-rw-r--r--docs/system/arm/virt.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/system/arm/virt.rst b/docs/system/arm/virt.rst
index 20442ea2c1..4454706392 100644
--- a/docs/system/arm/virt.rst
+++ b/docs/system/arm/virt.rst
@@ -94,6 +94,10 @@ highmem
   address space above 32 bits. The default is ``on`` for machine types
   later than ``virt-2.12``.
 
+compact-highmem
+  Set ``on``/``off`` to enable/disable the compact layout for high memory regions.
+  The default is ``on`` for machine types later than ``virt-7.2``.
+
 gic-version
   Specify the version of the Generic Interrupt Controller (GIC) to provide.
   Valid values are: