diff options
| -rw-r--r-- | hw/s390-virtio.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c index 37945d5..61b67e8 100644 --- a/hw/s390-virtio.c +++ b/hw/s390-virtio.c @@ -165,6 +165,9 @@ static void s390_init(ram_addr_t my_ram_size, ram_addr_t initrd_size = 0; int shift = 0; uint8_t *storage_keys; + void *virtio_region; + target_phys_addr_t virtio_region_len; + target_phys_addr_t virtio_region_start; int i; /* s390x ram size detection needs a 16bit multiplier + an increment. So @@ -184,6 +187,15 @@ static void s390_init(ram_addr_t my_ram_size, memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size); memory_region_add_subregion(sysmem, 0, ram); + /* clear virtio region */ + virtio_region_len = my_ram_size - ram_size; + virtio_region_start = ram_size; + virtio_region = cpu_physical_memory_map(virtio_region_start, + &virtio_region_len, true); + memset(virtio_region, 0, virtio_region_len); + cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1, + virtio_region_len); + /* allocate storage keys */ storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE); |