Index: qemu-kvm-1.0.1/ioport.c
===================================================================
--- qemu-kvm-1.0.1.orig/ioport.c
+++ qemu-kvm-1.0.1/ioport.c
@@ -177,6 +177,22 @@ int register_ioport_write(pio_addr_t sta
     return 0;
 }
 
+static uint32_t ioport_readb_nop(void *opaque, uint32_t addr)
+{
+    IORange *ioport = opaque;
+
+    printf("ignore 1byte read to %lx\n", addr - ioport->base);
+    return 0;
+}
+
+static uint32_t ioport_readw_nop(void *opaque, uint32_t addr)
+{
+    IORange *ioport = opaque;
+
+    printf("ignore 2byte read to %lx\n", addr - ioport->base);
+    return 0;
+}
+
 static uint32_t ioport_readb_thunk(void *opaque, uint32_t addr)
 {
     IORange *ioport = opaque;
@@ -204,6 +220,20 @@ static uint32_t ioport_readl_thunk(void
     return data;
 }
 
+static void ioport_writeb_nop(void *opaque, uint32_t addr, uint32_t data)
+{
+    IORange *ioport = opaque;
+
+    printf("ignore 1byte write to %lx data %x\n", addr - ioport->base, data);
+}
+
+static void ioport_writew_nop(void *opaque, uint32_t addr, uint32_t data)
+{
+    IORange *ioport = opaque;
+
+    printf("ignore 2byte write to %lx data %x\n", addr - ioport->base, data);
+}
+
 static void ioport_writeb_thunk(void *opaque, uint32_t addr, uint32_t data)
 {
     IORange *ioport = opaque;
@@ -227,6 +257,24 @@ static void ioport_writel_thunk(void *op
 
 void ioport_register(IORange *ioport)
 {
+    if ((ioport->base == 0xcf8 || ioport->base == 0xcfc) &&
+        ioport->len == 4) {
+	    register_ioport_read(ioport->base, ioport->len, 1,
+	                         ioport_readb_nop, ioport);
+	    register_ioport_read(ioport->base, ioport->len, 2,
+	                         ioport_readw_nop, ioport);
+	    
+	    register_ioport_write(ioport->base, ioport->len, 1,
+	                          ioport_writeb_nop, ioport);
+	    register_ioport_write(ioport->base, ioport->len, 2,
+	                          ioport_writew_nop, ioport);
+
+	    register_ioport_read(ioport->base, ioport->len, 4,
+	                         ioport_readl_thunk, ioport);
+	    register_ioport_write(ioport->base, ioport->len, 4,
+	                          ioport_writel_thunk, ioport);
+    	return;
+    }
     register_ioport_read(ioport->base, ioport->len, 1,
                          ioport_readb_thunk, ioport);
     register_ioport_read(ioport->base, ioport->len, 2,