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-rw-r--r--hw/misc/bcm2835_property.c7
-rw-r--r--hw/misc/imx_rngc.c6
-rw-r--r--hw/misc/macio/mac_dbdma.c2
3 files changed, 12 insertions, 3 deletions
diff --git a/hw/misc/bcm2835_property.c b/hw/misc/bcm2835_property.c
index 890ae7bae5..de056ea2df 100644
--- a/hw/misc/bcm2835_property.c
+++ b/hw/misc/bcm2835_property.c
@@ -382,6 +382,13 @@ static void bcm2835_property_init(Object *obj)
 
     memory_region_init_io(&s->iomem, OBJECT(s), &bcm2835_property_ops, s,
                           TYPE_BCM2835_PROPERTY, 0x10);
+
+    /*
+     * bcm2835_property_ops call into bcm2835_mbox, which in-turn reads from
+     * iomem. As such, mark iomem as re-entracy safe.
+     */
+    s->iomem.disable_reentrancy_guard = true;
+
     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem);
     sysbus_init_irq(SYS_BUS_DEVICE(s), &s->mbox_irq);
 }
diff --git a/hw/misc/imx_rngc.c b/hw/misc/imx_rngc.c
index 632c03779c..082c6980ad 100644
--- a/hw/misc/imx_rngc.c
+++ b/hw/misc/imx_rngc.c
@@ -228,8 +228,10 @@ static void imx_rngc_realize(DeviceState *dev, Error **errp)
     sysbus_init_mmio(sbd, &s->iomem);
 
     sysbus_init_irq(sbd, &s->irq);
-    s->self_test_bh = qemu_bh_new(imx_rngc_self_test, s);
-    s->seed_bh = qemu_bh_new(imx_rngc_seed, s);
+    s->self_test_bh = qemu_bh_new_guarded(imx_rngc_self_test, s,
+                                          &dev->mem_reentrancy_guard);
+    s->seed_bh = qemu_bh_new_guarded(imx_rngc_seed, s,
+                                     &dev->mem_reentrancy_guard);
 }
 
 static void imx_rngc_reset(DeviceState *dev)
diff --git a/hw/misc/macio/mac_dbdma.c b/hw/misc/macio/mac_dbdma.c
index 43bb1f56ba..80a789f32b 100644
--- a/hw/misc/macio/mac_dbdma.c
+++ b/hw/misc/macio/mac_dbdma.c
@@ -914,7 +914,7 @@ static void mac_dbdma_realize(DeviceState *dev, Error **errp)
 {
     DBDMAState *s = MAC_DBDMA(dev);
 
-    s->bh = qemu_bh_new(DBDMA_run_bh, s);
+    s->bh = qemu_bh_new_guarded(DBDMA_run_bh, s, &dev->mem_reentrancy_guard);
 }
 
 static void mac_dbdma_class_init(ObjectClass *oc, void *data)