diff --git a/include/sysemu/kvm_int.h b/include/sysemu/kvm_int.h
index 31df465fdc..7f7520bce2 100644
--- a/include/sysemu/kvm_int.h
+++ b/include/sysemu/kvm_int.h
@@ -41,4 +41,5 @@ typedef struct KVMMemoryListener {
 void kvm_memory_listener_register(KVMState *s, KVMMemoryListener *kml,
                                   AddressSpace *as, int as_id);
 
+void kvm_set_max_memslot_size(hwaddr max_slot_size);
 #endif
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index f450f25295..8153556335 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -138,6 +138,7 @@ bool kvm_direct_msi_allowed;
 bool kvm_ioeventfd_any_length_allowed;
 bool kvm_msi_use_devid;
 static bool kvm_immediate_exit;
+static hwaddr kvm_max_slot_size = ~0;
 
 static const KVMCapabilityInfo kvm_required_capabilites[] = {
     KVM_CAP_INFO(USER_MEMORY),
@@ -951,6 +952,14 @@ kvm_check_extension_list(KVMState *s, const KVMCapabilityInfo *list)
     return NULL;
 }
 
+void kvm_set_max_memslot_size(hwaddr max_slot_size)
+{
+    g_assert(
+        ROUND_UP(max_slot_size, qemu_real_host_page_size) == max_slot_size
+    );
+    kvm_max_slot_size = max_slot_size;
+}
+
 static void kvm_set_phys_mem(KVMMemoryListener *kml,
                              MemoryRegionSection *section, bool add)
 {
@@ -958,7 +967,7 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml,
     int err;
     MemoryRegion *mr = section->mr;
     bool writeable = !mr->readonly && !mr->rom_device;
-    hwaddr start_addr, size;
+    hwaddr start_addr, size, slot_size;
     void *ram;
 
     if (!memory_region_is_ram(mr)) {
@@ -983,41 +992,52 @@ static void kvm_set_phys_mem(KVMMemoryListener *kml,
     kvm_slots_lock(kml);
 
     if (!add) {
-        mem = kvm_lookup_matching_slot(kml, start_addr, size);
-        if (!mem) {
-            goto out;
-        }
-        if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
-            kvm_physical_sync_dirty_bitmap(kml, section);
-        }
+        do {
+            slot_size = kvm_max_slot_size < size ? kvm_max_slot_size : size;
+            mem = kvm_lookup_matching_slot(kml, start_addr, slot_size);
+            if (!mem) {
+                goto out;
+            }
+            if (mem->flags & KVM_MEM_LOG_DIRTY_PAGES) {
+                kvm_physical_sync_dirty_bitmap(kml, section);
+            }
 
-        /* unregister the slot */
-        g_free(mem->dirty_bmap);
-        mem->dirty_bmap = NULL;
-        mem->memory_size = 0;
-        mem->flags = 0;
-        err = kvm_set_user_memory_region(kml, mem, false);
-        if (err) {
-            fprintf(stderr, "%s: error unregistering slot: %s\n",
-                    __func__, strerror(-err));
-            abort();
-        }
+            /* unregister the slot */
+            g_free(mem->dirty_bmap);
+            mem->dirty_bmap = NULL;
+            mem->memory_size = 0;
+            mem->flags = 0;
+            err = kvm_set_user_memory_region(kml, mem, false);
+            if (err) {
+                fprintf(stderr, "%s: error unregistering slot: %s\n",
+                        __func__, strerror(-err));
+                abort();
+            }
+            start_addr += slot_size;
+            size -= slot_size;
+        } while (size);
         goto out;
     }
 
     /* register the new slot */
-    mem = kvm_alloc_slot(kml);
-    mem->memory_size = size;
-    mem->start_addr = start_addr;
-    mem->ram = ram;
-    mem->flags = kvm_mem_flags(mr);
-
-    err = kvm_set_user_memory_region(kml, mem, true);
-    if (err) {
-        fprintf(stderr, "%s: error registering slot: %s\n", __func__,
-                strerror(-err));
-        abort();
-    }
+    do {
+        slot_size = kvm_max_slot_size < size ? kvm_max_slot_size : size;
+        mem = kvm_alloc_slot(kml);
+        mem->memory_size = slot_size;
+        mem->start_addr = start_addr;
+        mem->ram = ram;
+        mem->flags = kvm_mem_flags(mr);
+
+        err = kvm_set_user_memory_region(kml, mem, true);
+        if (err) {
+            fprintf(stderr, "%s: error registering slot: %s\n", __func__,
+                    strerror(-err));
+            abort();
+        }
+        start_addr += slot_size;
+        ram += slot_size;
+        size -= slot_size;
+    } while (size);
 
 out:
     kvm_slots_unlock(kml);
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 5b6a9a4e55..0c03ffb7c7 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -151,15 +151,6 @@ static void virtio_ccw_register_hcalls(void)
                                    virtio_ccw_hcall_early_printk);
 }
 
-/*
- * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
- * as the dirty bitmap must be managed by bitops that take an int as
- * position indicator. If we have a guest beyond that we will split off
- * new subregions. The split must happen on a segment boundary (1MB).
- */
-#define KVM_MEM_MAX_NR_PAGES ((1ULL << 31) - 1)
-#define SEG_MSK (~0xfffffULL)
-#define KVM_SLOT_MAX_BYTES ((KVM_MEM_MAX_NR_PAGES * TARGET_PAGE_SIZE) & SEG_MSK)
 static void s390_memory_init(ram_addr_t mem_size)
 {
     MemoryRegion *sysmem = get_system_memory();
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 6e814c230b..6b1428a760 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -28,6 +28,7 @@
 #include "cpu.h"
 #include "internal.h"
 #include "kvm_s390x.h"
+#include "sysemu/kvm_int.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
 #include "qemu/timer.h"
@@ -122,6 +123,16 @@
 #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
                                      (max_cpus + NR_LOCAL_IRQS))
 
+/*
+ * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
+ * as the dirty bitmap must be managed by bitops that take an int as
+ * position indicator. If we have a guest beyond that we will split off
+ * new subregions. The split must happen on a segment boundary (1MB).
+ */
+#define KVM_MEM_MAX_NR_PAGES ((1ULL << 31) - 1)
+#define SEG_MSK (~0xfffffULL)
+#define KVM_SLOT_MAX_BYTES ((KVM_MEM_MAX_NR_PAGES * TARGET_PAGE_SIZE) & SEG_MSK)
+
 static CPUWatchpoint hw_watchpoint;
 /*
  * We don't use a list because this structure is also used to transmit the
@@ -347,6 +358,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s)
      */
     /* kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0); */
 
+    kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES);
     return 0;
 }
 
