Optional setup tsm configfs

Author: kvinwang

basefiles/dstack-prepare.sh

@@ -103,20 +103,22 @@ if ! [[ -e /dev/tdx_guest ]]; then
 	modprobe tdx-guest
 fi
 
-# Mount configfs for TSM (required for TDX quote generation)
-if [[ ! -d /sys/kernel/config ]]; then
-	mkdir -p /sys/kernel/config
-fi
-if ! mountpoint -q /sys/kernel/config; then
-	log "Mounting configfs for TSM..."
-	mount -t configfs none /sys/kernel/config
-fi
-
-# Create TSM report directory for TDX attestation
-if [[ -e /dev/tdx_guest ]] && [[ ! -d /sys/kernel/config/tsm/report/com.intel.dcap ]]; then
-	log "Creating TSM report directory..."
-	mkdir -p /sys/kernel/config/tsm/report/com.intel.dcap
-fi
+# Setup configfs and TSM for TDX attestation
+setup_tsm() {
+	if ! grep -q configfs /proc/filesystems; then
+		log "Warning: configfs not available in kernel, TSM may not work"
+		return 1
+	fi
+	if ! mountpoint -q /sys/kernel/config 2>/dev/null; then
+		log "Mounting configfs for TSM..."
+		mount -t configfs none /sys/kernel/config
+	fi
+	if [[ -e /dev/tdx_guest ]] && [[ ! -d /sys/kernel/config/tsm/report/com.intel.dcap ]]; then
+		log "Creating TSM report directory..."
+		mkdir -p /sys/kernel/config/tsm/report/com.intel.dcap
+	fi
+}
+setup_tsm || true
 
 # Setup dstack system
 log "Preparing dstack system..."