diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
index 6f707bb..584d4a2 100644
--- a/pc-bios/s390-ccw/main.c
+++ b/pc-bios/s390-ccw/main.c
@@ -12,6 +12,7 @@
 #include "virtio.h"
 
 char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
+char ring_area[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
 uint64_t boot_value;
 static struct subchannel_id blk_schid = { .one = 1 };
 
diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h
index ceb7418..9b3868b 100644
--- a/pc-bios/s390-ccw/s390-ccw.h
+++ b/pc-bios/s390-ccw/s390-ccw.h
@@ -52,6 +52,7 @@
 void virtio_panic(const char *string);
 void write_subsystem_identification(void);
 extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
+extern char ring_area[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
 extern uint64_t boot_value;
 
 /* sclp-ascii.c */
diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c
index 4dc91a7..76919f7 100644
--- a/pc-bios/s390-ccw/virtio.c
+++ b/pc-bios/s390-ccw/virtio.c
@@ -378,10 +378,10 @@
     if (run_ccw(schid, CCW_CMD_READ_CONF, &blk_cfg, sizeof(blk_cfg))) {
         virtio_panic("Could not get block device configuration\n");
     }
-    vring_init(&block, config.num, (void *)(100 * 1024 * 1024),
+    vring_init(&block, config.num, ring_area,
                KVM_S390_VIRTIO_RING_ALIGN);
 
-    info.queue = (100ULL * 1024ULL* 1024ULL);
+    info.queue = (unsigned long long) ring_area;
     info.align = KVM_S390_VIRTIO_RING_ALIGN;
     info.index = 0;
     info.num = config.num;