diff --git a/tests/libqos/pci-pc.c b/tests/libqos/pci-pc.c
index d0eb84a..84aee25 100644
--- a/tests/libqos/pci-pc.c
+++ b/tests/libqos/pci-pc.c
@@ -87,6 +87,17 @@ static void qpci_pc_mmio_writel(QPCIBus *bus, uint32_t addr, uint32_t val)
     writel(addr, val);
 }
 
+static void qpci_pc_memread(QPCIBus *bus, uint32_t addr, void *buf, size_t len)
+{
+    memread(addr, buf, len);
+}
+
+static void qpci_pc_memwrite(QPCIBus *bus, uint32_t addr,
+                             const void *buf, size_t len)
+{
+    memwrite(addr, buf, len);
+}
+
 static uint8_t qpci_pc_config_readb(QPCIBus *bus, int devfn, uint8_t offset)
 {
     outl(0xcf8, (1U << 31) | (devfn << 8) | offset);
@@ -145,6 +156,9 @@ QPCIBus *qpci_init_pc(QGuestAllocator *alloc)
     ret->bus.mmio_writew = qpci_pc_mmio_writew;
     ret->bus.mmio_writel = qpci_pc_mmio_writel;
 
+    ret->bus.memread = qpci_pc_memread;
+    ret->bus.memwrite = qpci_pc_memwrite;
+
     ret->bus.config_readb = qpci_pc_config_readb;
     ret->bus.config_readw = qpci_pc_config_readw;
     ret->bus.config_readl = qpci_pc_config_readl;
diff --git a/tests/libqos/pci-spapr.c b/tests/libqos/pci-spapr.c
index 70a24b5..ad12c2e 100644
--- a/tests/libqos/pci-spapr.c
+++ b/tests/libqos/pci-spapr.c
@@ -114,6 +114,20 @@ static void qpci_spapr_mmio32_writel(QPCIBus *bus, uint32_t addr, uint32_t val)
     writel(s->mmio32_cpu_base + addr, bswap32(val));
 }
 
+static void qpci_spapr_memread(QPCIBus *bus, uint32_t addr,
+                               void *buf, size_t len)
+{
+    QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
+    memread(s->mmio32_cpu_base + addr, buf, len);
+}
+
+static void qpci_spapr_memwrite(QPCIBus *bus, uint32_t addr,
+                                const void *buf, size_t len)
+{
+    QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
+    memwrite(s->mmio32_cpu_base + addr, buf, len);
+}
+
 static uint8_t qpci_spapr_config_readb(QPCIBus *bus, int devfn, uint8_t offset)
 {
     QPCIBusSPAPR *s = container_of(bus, QPCIBusSPAPR, bus);
@@ -188,6 +202,9 @@ QPCIBus *qpci_init_spapr(QGuestAllocator *alloc)
     ret->bus.mmio_writew = qpci_spapr_mmio32_writew;
     ret->bus.mmio_writel = qpci_spapr_mmio32_writel;
 
+    ret->bus.memread = qpci_spapr_memread;
+    ret->bus.memwrite = qpci_spapr_memwrite;
+
     ret->bus.config_readb = qpci_spapr_config_readb;
     ret->bus.config_readw = qpci_spapr_config_readw;
     ret->bus.config_readl = qpci_spapr_config_readl;
diff --git a/tests/libqos/pci.c b/tests/libqos/pci.c
index 98a2e56..146b063 100644
--- a/tests/libqos/pci.c
+++ b/tests/libqos/pci.c
@@ -289,6 +289,22 @@ void qpci_io_writel(QPCIDevice *dev, void *data, uint32_t value)
     }
 }
 
+void qpci_memread(QPCIDevice *dev, void *data, void *buf, size_t len)
+{
+    uintptr_t addr = (uintptr_t)data;
+
+    g_assert(addr >= QPCI_PIO_LIMIT);
+    dev->bus->memread(dev->bus, addr, buf, len);
+}
+
+void qpci_memwrite(QPCIDevice *dev, void *data, const void *buf, size_t len)
+{
+    uintptr_t addr = (uintptr_t)data;
+
+    g_assert(addr >= QPCI_PIO_LIMIT);
+    dev->bus->memwrite(dev->bus, addr, buf, len);
+}
+
 void *qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr)
 {
     QPCIBus *bus = dev->bus;
diff --git a/tests/libqos/pci.h b/tests/libqos/pci.h
index b6f855e..2b08362 100644
--- a/tests/libqos/pci.h
+++ b/tests/libqos/pci.h
@@ -39,6 +39,9 @@ struct QPCIBus {
     void (*mmio_writew)(QPCIBus *bus, uint32_t addr, uint16_t value);
     void (*mmio_writel)(QPCIBus *bus, uint32_t addr, uint32_t value);
 
+    void (*memread)(QPCIBus *bus, uint32_t addr, void *buf, size_t len);
+    void (*memwrite)(QPCIBus *bus, uint32_t addr, const void *buf, size_t len);
+
     uint8_t (*config_readb)(QPCIBus *bus, int devfn, uint8_t offset);
     uint16_t (*config_readw)(QPCIBus *bus, int devfn, uint8_t offset);
     uint32_t (*config_readl)(QPCIBus *bus, int devfn, uint8_t offset);
@@ -92,6 +95,9 @@ void qpci_io_writeb(QPCIDevice *dev, void *data, uint8_t value);
 void qpci_io_writew(QPCIDevice *dev, void *data, uint16_t value);
 void qpci_io_writel(QPCIDevice *dev, void *data, uint32_t value);
 
+void qpci_memread(QPCIDevice *bus, void *data, void *buf, size_t len);
+void qpci_memwrite(QPCIDevice *bus, void *data, const void *buf, size_t len);
+
 void *qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr);
 void qpci_iounmap(QPCIDevice *dev, void *data);
 void *qpci_legacy_iomap(QPCIDevice *dev, uint16_t addr);
