diff --git a/util/udma_barrier.h b/util/udma_barrier.h
index 23acf23..899acf5 100644
--- a/util/udma_barrier.h
+++ b/util/udma_barrier.h
@@ -96,6 +96,8 @@
 #define udma_to_device_barrier() asm volatile("dsb st" ::: "memory");
 #elif defined(__sparc__) || defined(__s390x__)
 #define udma_to_device_barrier() asm volatile("" ::: "memory")
+#elif defined(__riscv)
+#define udma_to_device_barrier() asm volatile("fence w,w" ::: "memory");
 #else
 #error No architecture specific memory barrier defines found!
 #endif
@@ -128,6 +130,8 @@
 #define udma_from_device_barrier() asm volatile("dsb ld" ::: "memory");
 #elif defined(__sparc__) || defined(__s390x__)
 #define udma_from_device_barrier() asm volatile("" ::: "memory")
+#elif defined(__riscv)
+#define udma_from_device_barrier() asm volatile("fence r,rw" ::: "memory");
 #else
 #error No architecture specific memory barrier defines found!
 #endif
@@ -192,6 +196,8 @@
 #define mmio_flush_writes() asm volatile("dsb st" ::: "memory");
 #elif defined(__sparc__) || defined(__s390x__)
 #define mmio_flush_writes() asm volatile("" ::: "memory")
+#elif defined(__riscv)
+#define mmio_flush_writes() asm volatile("fence w,w" ::: "memory");
 #else
 #error No architecture specific memory barrier defines found!
 #endif