diff --git a/hw/intc/spapr_xive_kvm.c b/hw/intc/spapr_xive_kvm.c
index 893a1ee77e..6130882be6 100644
--- a/hw/intc/spapr_xive_kvm.c
+++ b/hw/intc/spapr_xive_kvm.c
@@ -742,7 +742,7 @@ int kvmppc_xive_connect(SpaprInterruptController *intc, uint32_t nr_servers,
     SpaprXive *xive = SPAPR_XIVE(intc);
     XiveSource *xsrc = &xive->source;
     Error *local_err = NULL;
-    size_t esb_len = (1ull << xsrc->esb_shift) * xsrc->nr_irqs;
+    size_t esb_len = xive_source_esb_len(xsrc);
     size_t tima_len = 4ull << TM_SHIFT;
     CPUState *cs;
     int fd;
@@ -788,7 +788,7 @@ int kvmppc_xive_connect(SpaprInterruptController *intc, uint32_t nr_servers,
     }
 
     memory_region_init_ram_device_ptr(&xsrc->esb_mmio_kvm, OBJECT(xsrc),
-                                      "xive.esb", esb_len, xsrc->esb_mmap);
+                                      "xive.esb-kvm", esb_len, xsrc->esb_mmap);
     memory_region_add_subregion_overlap(&xsrc->esb_mmio, 0,
                                         &xsrc->esb_mmio_kvm, 1);
 
diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index 9b55e0356c..561d746cd1 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -1128,6 +1128,7 @@ static void xive_source_reset(void *dev)
 static void xive_source_realize(DeviceState *dev, Error **errp)
 {
     XiveSource *xsrc = XIVE_SOURCE(dev);
+    size_t esb_len = xive_source_esb_len(xsrc);
 
     assert(xsrc->xive);
 
@@ -1147,11 +1148,11 @@ static void xive_source_realize(DeviceState *dev, Error **errp)
     xsrc->status = g_malloc0(xsrc->nr_irqs);
     xsrc->lsi_map = bitmap_new(xsrc->nr_irqs);
 
-    if (!kvm_irqchip_in_kernel()) {
-        memory_region_init_io(&xsrc->esb_mmio, OBJECT(xsrc),
-                              &xive_source_esb_ops, xsrc, "xive.esb",
-                              (1ull << xsrc->esb_shift) * xsrc->nr_irqs);
-    }
+    memory_region_init(&xsrc->esb_mmio, OBJECT(xsrc), "xive.esb", esb_len);
+    memory_region_init_io(&xsrc->esb_mmio_emulated, OBJECT(xsrc),
+                          &xive_source_esb_ops, xsrc, "xive.esb-emulated",
+                          esb_len);
+    memory_region_add_subregion(&xsrc->esb_mmio, 0, &xsrc->esb_mmio_emulated);
 
     qemu_register_reset(xive_source_reset, dev);
 }
diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index 705cf48176..82a61eaca7 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -191,6 +191,7 @@ typedef struct XiveSource {
     uint64_t        esb_flags;
     uint32_t        esb_shift;
     MemoryRegion    esb_mmio;
+    MemoryRegion    esb_mmio_emulated;
 
     /* KVM support */
     void            *esb_mmap;
@@ -215,6 +216,11 @@ static inline bool xive_source_esb_has_2page(XiveSource *xsrc)
         xsrc->esb_shift == XIVE_ESB_4K_2PAGE;
 }
 
+static inline size_t xive_source_esb_len(XiveSource *xsrc)
+{
+    return (1ull << xsrc->esb_shift) * xsrc->nr_irqs;
+}
+
 /* The trigger page is always the first/even page */
 static inline hwaddr xive_source_esb_page(XiveSource *xsrc, uint32_t srcno)
 {