diff --git a/[refs] b/[refs]
index b4aa8eade4aa..01f293e22c18 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8fa2206821953a50a3a02ea33fcfb3ced2fd9997
+refs/heads/master: 76d25402dfc972a135a656613736fe3602045a95
diff --git a/trunk/Documentation/kvm/api.txt b/trunk/Documentation/kvm/api.txt
index f64c41f8ba61..42542eb802ca 100644
--- a/trunk/Documentation/kvm/api.txt
+++ b/trunk/Documentation/kvm/api.txt
@@ -175,7 +175,10 @@ Parameters: vcpu id (apic id on x86)
 Returns: vcpu fd on success, -1 on error
 
 This API adds a vcpu to a virtual machine.  The vcpu id is a small integer
-in the range [0, max_vcpus).
+in the range [0, max_vcpus).  You can use KVM_CAP_NR_VCPUS of the
+KVM_CHECK_EXTENSION ioctl() to determine the value for max_vcpus at run-time.
+If the KVM_CAP_NR_VCPUS does not exist, you should assume that max_vcpus is 4
+cpus max.
 
 4.8 KVM_GET_DIRTY_LOG (vm ioctl)