diff --git a/build.config.allmodconfig b/build.config.allmodconfig
new file mode 100644
index 000000000000..43b1a70d5800
--- /dev/null
+++ b/build.config.allmodconfig
@@ -0,0 +1,11 @@
+DEFCONFIG=allmodconfig
+
+# XFS_FS is currently broken on this branch with clang-9
+POST_DEFCONFIG_CMDS="update_config"
+function update_config() {
+    ${KERNEL_DIR}/scripts/config --file ${OUT_DIR}/.config \
+         -d TEST_KMOD  \
+         -d XFS_FS
+    (cd ${OUT_DIR} && \
+     make O=${OUT_DIR} $archsubarch CC=${CC} CROSS_COMPILE=${CROSS_COMPILE} olddefconfig)
+}
diff --git a/build.config.allmodconfig.aarch64 b/build.config.allmodconfig.aarch64
new file mode 100644
index 000000000000..863ab1caddab
--- /dev/null
+++ b/build.config.allmodconfig.aarch64
@@ -0,0 +1,4 @@
+. ${ROOT_DIR}/common/build.config.common
+. ${ROOT_DIR}/common/build.config.aarch64
+. ${ROOT_DIR}/common/build.config.allmodconfig
+
diff --git a/build.config.allmodconfig.x86_64 b/build.config.allmodconfig.x86_64
new file mode 100644
index 000000000000..bedb3869d99b
--- /dev/null
+++ b/build.config.allmodconfig.x86_64
@@ -0,0 +1,4 @@
+. ${ROOT_DIR}/common/build.config.common
+. ${ROOT_DIR}/common/build.config.x86_64
+. ${ROOT_DIR}/common/build.config.allmodconfig
+