diff --git a/repos/dde_linux/src/include/lx_emul/mmio.h b/repos/dde_linux/src/include/lx_emul/mmio.h
index 0db1ff469..3fe823ab5 100644
--- a/repos/dde_linux/src/include/lx_emul/mmio.h
+++ b/repos/dde_linux/src/include/lx_emul/mmio.h
@@ -19,12 +19,15 @@
  ** asm-generic/io.h **
  **********************/
 
-#define writeq(value, addr) (*(volatile uint64_t *)(addr) = (value))
-#define writel(value, addr) (*(volatile uint32_t *)(addr) = (value))
-#define writew(value, addr) (*(volatile uint16_t *)(addr) = (value))
-#define writeb(value, addr) (*(volatile uint8_t *)(addr) = (value))
+#define iowmb dma_wmb
+#define iormb dma_rmb
 
-#define readq(addr) (*(volatile uint64_t *)(addr))
-#define readl(addr) (*(volatile uint32_t *)(addr))
-#define readw(addr) (*(volatile uint16_t *)(addr))
-#define readb(addr) (*(volatile uint8_t  *)(addr))
+#define writeq(value, addr) ({ iowmb(); *(volatile uint64_t *)(addr) = (value); })
+#define writel(value, addr) ({ iowmb(); *(volatile uint32_t *)(addr) = (value); })
+#define writew(value, addr) ({ iowmb(); *(volatile uint16_t *)(addr) = (value); })
+#define writeb(value, addr) ({ iowmb(); *(volatile uint8_t  *)(addr) = (value); })
+
+#define readq(addr) ({ uint64_t const r = *(volatile uint64_t *)(addr); iormb(); r; })
+#define readl(addr) ({ uint32_t const r = *(volatile uint32_t *)(addr); iormb(); r; })
+#define readw(addr) ({ uint16_t const r = *(volatile uint16_t *)(addr); iormb(); r; })
+#define readb(addr) ({ uint8_t  const r = *(volatile uint8_t  *)(addr); iormb(); r; })
diff --git a/repos/dde_linux/src/include/spec/arm_64/lx_emul/barrier.h b/repos/dde_linux/src/include/spec/arm_64/lx_emul/barrier.h
index 76f0e6d85..215521c01 100644
--- a/repos/dde_linux/src/include/spec/arm_64/lx_emul/barrier.h
+++ b/repos/dde_linux/src/include/spec/arm_64/lx_emul/barrier.h
@@ -19,6 +19,9 @@
 #define rmb() mb()
 #define wmb() asm volatile ("dsb st": : :"memory")
 
+#define dma_wmb() __asm__ __volatile__ ("dmb oshst" : : : "memory")
+#define dma_rmb() __asm__ __volatile__ ("dmb oshld" : : : "memory")
+
 /*
  * This is the "safe" implementation as needed for a configuration
  * with bufferable DMA memory and SMP enabled.
diff --git a/repos/dde_linux/src/include/spec/arm_v6/lx_emul/barrier.h b/repos/dde_linux/src/include/spec/arm_v6/lx_emul/barrier.h
index 221eb6536..a754f14d5 100644
--- a/repos/dde_linux/src/include/spec/arm_v6/lx_emul/barrier.h
+++ b/repos/dde_linux/src/include/spec/arm_v6/lx_emul/barrier.h
@@ -19,6 +19,9 @@
 #define rmb() mb()
 #define wmb() asm volatile ("": : :"memory")
 
+#define dma_wmb() barrier()
+#define dma_rmb() barrier()
+
 /*
  * This is the "safe" implementation as needed for a configuration
  * with SMP enabled.
diff --git a/repos/dde_linux/src/include/spec/arm_v7/lx_emul/barrier.h b/repos/dde_linux/src/include/spec/arm_v7/lx_emul/barrier.h
index 6f2b80520..ccc7957f0 100644
--- a/repos/dde_linux/src/include/spec/arm_v7/lx_emul/barrier.h
+++ b/repos/dde_linux/src/include/spec/arm_v7/lx_emul/barrier.h
@@ -19,6 +19,9 @@
 #define rmb() mb()
 #define wmb() asm volatile ("dsb st": : :"memory")
 
+#define dma_wmb() barrier()
+#define dma_rmb() barrier()
+
 /*
  * This is the "safe" implementation as needed for a configuration
  * with bufferable DMA memory and SMP enabled.
diff --git a/repos/dde_linux/src/include/spec/x86/lx_emul/barrier.h b/repos/dde_linux/src/include/spec/x86/lx_emul/barrier.h
index d0575003d..4813ef079 100644
--- a/repos/dde_linux/src/include/spec/x86/lx_emul/barrier.h
+++ b/repos/dde_linux/src/include/spec/x86/lx_emul/barrier.h
@@ -7,6 +7,9 @@
 #define rmb() asm volatile ("lfence": : :"memory")
 #define wmb() asm volatile ("sfence": : :"memory")
 
+#define dma_wmb() barrier()
+#define dma_rmb() barrier()
+
 /*
  * This is the "safe" implementation as needed for a configuration
  * with SMP enabled.