diff --git a/share/man/man4/vmm.4 b/share/man/man4/vmm.4
--- a/share/man/man4/vmm.4
+++ b/share/man/man4/vmm.4
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 19, 2013
+.Dd May 11, 2013
 .Dt VMM 4
 .Os
 .Sh NAME
@@ -81,6 +81,16 @@
 and
 .Va pptdevs3
 variables can be used for additional entries.
+.Sh LOADER TUNABLES
+Tunables can be set at the
+.Xr loader 8
+prompt before booting the kernel or stored in
+.Xr loader.conf 5 .
+.Bl -tag -width indent
+.It Va hw.vmm.maxcpu
+Maximum number of vCPUs.
+Default is the number of active CPUs in the system.
+.El
 .Sh EXAMPLES
 Reserve three PCI devices for use by the hypervisor: bus 10 slot 0 function 0,
 bus 6 slot 5 function 0, and bus 6 slot 5 function 1.
diff --git a/usr.sbin/bhyve/bhyve.8 b/usr.sbin/bhyve/bhyve.8
--- a/usr.sbin/bhyve/bhyve.8
+++ b/usr.sbin/bhyve/bhyve.8
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd May 5, 2023
+.Dd May 11, 2023
 .Dt BHYVE 8
 .Os
 .Sh NAME
@@ -133,7 +133,6 @@
 and
 .Ar threads
 is 1.
-The current maximum number of guest virtual CPUs is 16.
 If
 .Ar numcpus
 is not specified then it will be calculated from the other arguments.
@@ -147,6 +146,12 @@
 If a
 .Ar setting
 is specified more than once the last one has precedence.
+.Pp
+The default maximum number of guest virtual CPUs equals to number of active
+CPUs in the system.
+See
+.Xr vmm 4
+for information on changing it.
 .It Fl D
 Destroy the VM on guest initiated power-off.
 .It Fl e