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-rw-r--r--hw/isa/piix3.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/hw/isa/piix3.c b/hw/isa/piix3.c
index 04895ce2e5..72dbf688d9 100644
--- a/hw/isa/piix3.c
+++ b/hw/isa/piix3.c
@@ -290,7 +290,11 @@ static uint64_t rcr_read(void *opaque, hwaddr addr, unsigned len)
 static const MemoryRegionOps rcr_ops = {
     .read = rcr_read,
     .write = rcr_write,
-    .endianness = DEVICE_LITTLE_ENDIAN
+    .endianness = DEVICE_LITTLE_ENDIAN,
+    .impl = {
+        .min_access_size = 1,
+        .max_access_size = 1,
+    },
 };
 
 static void pci_piix3_realize(PCIDevice *dev, Error **errp)