diff options
| -rw-r--r-- | hw/s390x/s390-virtio-ccw.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 67ae34aead..f2a17ecace 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -180,6 +180,17 @@ static void s390_memory_init(MemoryRegion *ram) { MemoryRegion *sysmem = get_system_memory(); + if (!QEMU_IS_ALIGNED(memory_region_size(ram), 1 * MiB)) { + /* + * SCLP cannot possibly expose smaller granularity right now and KVM + * cannot handle smaller granularity. As we don't support NUMA, the + * region size directly corresponds to machine->ram_size, and the region + * is a single RAM memory region. + */ + error_report("ram size must be multiples of 1 MiB"); + exit(EXIT_FAILURE); + } + /* allocate RAM for core */ memory_region_add_subregion(sysmem, 0, ram); |