- Don't use 'rep insb' to read IO ports, vmm does not support that yet.

Index: src/fw/paravirt.c
--- src/fw/paravirt.c.orig
+++ src/fw/paravirt.c
@@ -310,7 +310,9 @@ qemu_cfg_read(void *buf, int len)
     if (qemu_cfg_dma_enabled()) {
         qemu_cfg_dma_transfer(buf, len, QEMU_CFG_DMA_CTL_READ);
     } else {
-        insb(PORT_QEMU_CFG_DATA, buf, len);
+	u8 *d = buf;
+	while (len-- > 0)
+		*d++ = inb(PORT_QEMU_CFG_DATA);
     }
 }