diff --git a/docs/user-guide.rst b/docs/user-guide.rst
index 79d660d..04acbe7 100644
--- a/docs/user-guide.rst
+++ b/docs/user-guide.rst
@@ -354,6 +354,17 @@
    The default is 1 but is automatically disabled when the target architecture
    is AArch32.
 
+-  ``ENABLE_SVE_FOR_NS``: Boolean option to enable Scalable Vector Extension
+   (SVE) for the Non-secure world only. SVE is an optional architectural feature
+   for AArch64. Note that when SVE is enabled for the Non-secure world, access
+   to SIMD and floating-point functionality from the Secure world is disabled.
+   This is to avoid corruption of the Non-secure world data in the Z-registers
+   which are aliased by the SIMD and FP registers. The build option is not
+   compatible with the ``CTX_INCLUDE_FPREGS`` build option, and will raise an
+   assert on platforms where SVE is implemented and ``ENABLE_SVE_FOR_NS`` set to
+   1. The default is 1 but is automatically disabled when the target
+   architecture is AArch32.
+
 -  ``ENABLE_STACK_PROTECTOR``: String option to enable the stack protection
    checks in GCC. Allowed values are "all", "strong" and "0" (default).
    "strong" is the recommended stack protection level if this feature is