diff --git a/.github/workflows/build-and-test-Xen.yml b/.github/workflows/build-and-test-Xen.yml
index 7aab6780232..ce19353ffe0 100644
--- a/.github/workflows/build-and-test-Xen.yml
+++ b/.github/workflows/build-and-test-Xen.yml
@@ -1,6 +1,8 @@
 name: Build and Test Xen
 
-on: [push]
+on:
+  pull_request:
+    branches: [ develop ]
 
 jobs:
   Linux:
@@ -14,7 +16,8 @@ jobs:
         software-properties-common libwww-perl python \
         bin86 gdb bcc liblzma-dev python-dev gettext iasl \
         uuid-dev libncurses5-dev libncursesw5-dev pkg-config \
-        libgtk2.0-dev libyajl-dev sudo time
+        libgtk2.0-dev libyajl-dev sudo \
+        time
 
     - uses: actions/checkout@v1
 
@@ -22,5 +25,17 @@ jobs:
       run: make -C src minisat2-download
       run: make -C src cbmc.dir goto-cc.dir goto-diff.dir
 
+    - name: get one-line-scan
+      run: git clone https://github.com/awslabs/one-line-scan.git
+
     - name: get Xen 4.13
       run: git clone git://xenbits.xen.org/xen.git xen_4_13 && cd xen_4_13 && git reset --hard RELEASE-4.13.0
+
+    - name: compile Xen with CBMC via one-line-scan
+      run: ls
+      run: pwd
+      run: ls src/*
+      run: ln -sf src/goto-cc/goto-cc src/goto-cc/goto-ld
+      run: ln -sf src/goto-cc/goto-cc src/goto-cc/goto-as
+      run: ln -sf src/goto-cc/goto-cc src/goto-cc/goto-g++
+      run: PATH=$PATH:src/cbmc:src/goto-cc one-line-scan/one-line-scan --no-analysis --trunc-existing --extra-cflags -Wno-error -o CPROVER -j 3 -- make -C xen xen -j $(nproc) -k