AWS cli documentation change

Service: cli · 2026-02-13 · Documentation low

File: cli/latest/reference/ec2/modify-instance-cpu-options.md

Summary

Added nested virtualization parameter and made core-count/threads-per-core optional. Updated AWS CLI version reference.

Security assessment

Added documentation for nested virtualization feature which mentions that enabling it automatically disables Virtual Secure Mode (VSM), a security feature. This documents security implications but doesn't address a specific vulnerability.

Diff

diff --git a/cli/latest/reference/ec2/modify-instance-cpu-options.md b/cli/latest/reference/ec2/modify-instance-cpu-options.md
index cf4d3931e..4ba4857de 100644
--- a//cli/latest/reference/ec2/modify-instance-cpu-options.md
+++ b//cli/latest/reference/ec2/modify-instance-cpu-options.md
@@ -15 +15 @@
-  * [AWS CLI 2.33.18 Command Reference](../../index.html) »
+  * [AWS CLI 2.33.21 Command Reference](../../index.html) »
@@ -74,2 +74,3 @@ See also: [AWS API Documentation](https://docs.aws.amazon.com/goto/WebAPI/ec2-20
-    --core-count <value>
-    --threads-per-core <value>
+    [--core-count <value>]
+    [--threads-per-core <value>]
+    [--nested-virtualization <value>]
@@ -105 +106 @@ See also: [AWS API Documentation](https://docs.aws.amazon.com/goto/WebAPI/ec2-20
-`--core-count` (integer) [required]
+`--core-count` (integer)
@@ -109 +110 @@ See also: [AWS API Documentation](https://docs.aws.amazon.com/goto/WebAPI/ec2-20
-`--threads-per-core` (integer) [required]
+`--threads-per-core` (integer)
@@ -112,0 +114,11 @@ See also: [AWS API Documentation](https://docs.aws.amazon.com/goto/WebAPI/ec2-20
+`--nested-virtualization` (string)
+
+> Indicates whether to enable or disable nested virtualization for the instance. When nested virtualization is enabled, Virtual Secure Mode (VSM) is automatically disabled for the instance.
+> 
+> Possible values:
+> 
+>   * `enabled`
+>   * `disabled`
+> 
+
+
@@ -227,0 +240,11 @@ ThreadsPerCore -> (integer)
+NestedVirtualization -> (string)
+
+> Indicates whether nested virtualization has been enabled or disabled.
+> 
+> Possible values:
+> 
+>   * `enabled`
+>   * `disabled`
+> 
+
+
@@ -238 +261 @@ ThreadsPerCore -> (integer)
-  * [AWS CLI 2.33.18 Command Reference](../../index.html) »
+  * [AWS CLI 2.33.21 Command Reference](../../index.html) »