diff --git a/README.md b/README.md
index 286a6c7..f5e1dbd 100644
--- a/README.md
+++ b/README.md
@@ -1258,6 +1258,8 @@ Vagrant.configure("2") do |config|
     libvirt.hyperv_feature :name => 'relaxed', :state => 'on'
     # Enable virtual APIC
     libvirt.hyperv_feature :name => 'vapic', :state => 'on'
+    # Enable spinlocks (requires retries to be specified)
+    libvirt.hyperv_feature :name => 'spinlocks', :state => 'on', :retries => '8191'
   end
 end
 ```
diff --git a/lib/vagrant-libvirt/action/create_domain.rb b/lib/vagrant-libvirt/action/create_domain.rb
index cb082c1..db31586 100644
--- a/lib/vagrant-libvirt/action/create_domain.rb
+++ b/lib/vagrant-libvirt/action/create_domain.rb
@@ -237,7 +237,11 @@ module VagrantPlugins
             env[:ui].info(" -- Feature:           #{feature}")
           end
           @features_hyperv.each do |feature|
-            env[:ui].info(" -- Feature (HyperV):  name=#{feature[:name]}, state=#{feature[:state]}")
+            if feature[:name] == 'spinlocks'
+              env[:ui].info(" -- Feature (HyperV):  name=#{feature[:name]}, state=#{feature[:state]}, retries=#{feature[:retries]}")
+            else
+              env[:ui].info(" -- Feature (HyperV):  name=#{feature[:name]}, state=#{feature[:state]}")
+            end
           end
           env[:ui].info(" -- Clock offset:      #{@clock_offset}")
           @clock_timers.each do |timer|
diff --git a/lib/vagrant-libvirt/config.rb b/lib/vagrant-libvirt/config.rb
index 6bf0cd9..e7de501 100644
--- a/lib/vagrant-libvirt/config.rb
+++ b/lib/vagrant-libvirt/config.rb
@@ -398,10 +398,20 @@ module VagrantPlugins
           raise 'Feature name AND state must be specified'
         end
 
+        if options[:name] == 'spinlocks' && options[:retries].nil?
+          raise 'Feature spinlocks requires retries parameter'
+        end
+
         @features_hyperv = []  if @features_hyperv == UNSET_VALUE
 
-        @features_hyperv.push(name: options[:name],
-                              state: options[:state])
+        if options[:name] == 'spinlocks'
+          @features_hyperv.push(name:   options[:name],
+                             state: options[:state],
+                             retries: options[:retries])
+        else
+          @features_hyperv.push(name:   options[:name],
+                             state: options[:state])
+        end
       end
 
       def clock_timer(options = {})
diff --git a/lib/vagrant-libvirt/templates/domain.xml.erb b/lib/vagrant-libvirt/templates/domain.xml.erb
index 7d53054..6ea1fcd 100644
--- a/lib/vagrant-libvirt/templates/domain.xml.erb
+++ b/lib/vagrant-libvirt/templates/domain.xml.erb
@@ -99,7 +99,7 @@
     <% if !@features_hyperv.empty? %>
     <hyperv>
       <% @features_hyperv.each do |feature| %>
-      <<%= feature[:name] %> state='<%= feature[:state] %>' />
+      <<%= feature[:name] %> state='<%= feature[:state] %>'<% if feature[:name] == 'spinlocks' %> retries='<%= feature[:retries] %>'<% end %> />
       <% end %>
     </hyperv>
     <% end %>
diff --git a/spec/unit/templates/domain_all_settings.xml b/spec/unit/templates/domain_all_settings.xml
index 4686396..05f048c 100644
--- a/spec/unit/templates/domain_all_settings.xml
+++ b/spec/unit/templates/domain_all_settings.xml
@@ -34,6 +34,7 @@
     <pae/>
     <hyperv>
       <BBB state='on' />
+      <spinlocks state='on' retries='4096' />
     </hyperv>
   </features>
   <clock offset='variable'>
diff --git a/spec/unit/templates/domain_spec.rb b/spec/unit/templates/domain_spec.rb
index 51aaf61..b9b8289 100644
--- a/spec/unit/templates/domain_spec.rb
+++ b/spec/unit/templates/domain_spec.rb
@@ -43,6 +43,7 @@ describe 'templates/domain' do
       domain.clock_offset = 'variable'
       domain.clock_timer(name: 't1')
       domain.clock_timer(name: 't2', track: 'b', tickpolicy: 'c', frequency: 'd', mode: 'e',  present: 'yes')
+      domain.hyperv_feature(name: 'spinlocks', state: 'on', retries: '4096')
       domain.cputopology(sockets: '1', cores: '3', threads: '2')
       domain.machine_type = 'pc-compatible'
       domain.machine_arch = 'x86_64'