diff --git a/README.md b/README.md
index f79a4e2..0009391 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,11 @@
 ### build-kernel
-This playbook is used to automatically build a kernel with an ACS overrides patch applied.  Useful to isolate PCI-e devices to their own IOMMU group for VFIO passthrough.
+This playbook is used to automatically build a kernel with an ACS overrides patch applied as well as Valve's fsync patches.  
 
-See this page for kernel configuration details: https://copr.fedorainfracloud.org/coprs/jlay/kernel-acspatch/
+The ACS patch is useful to isolate PCI-e devices to their own IOMMU group for VFIO passthrough.
+
+The fsync patches improve Proton performance.
+
+See this page for ACS kernel configuration details: https://copr.fedorainfracloud.org/coprs/jlay/kernel-acspatch/
 
 ### Requirements
  - Inventory with one host