diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index 00eaf91fca..fbc475f27a 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -877,7 +877,7 @@ static void pnv_phb4_update_regions(PnvPhb4PecStack *stack)
         memory_region_del_subregion(&phb->phbbar, &phb->mr_regs);
     }
     if (memory_region_is_mapped(&phb->xsrc.esb_mmio)) {
-        memory_region_del_subregion(&stack->intbar, &phb->xsrc.esb_mmio);
+        memory_region_del_subregion(&phb->intbar, &phb->xsrc.esb_mmio);
     }
 
     /* Map registers if enabled */
@@ -886,8 +886,8 @@ static void pnv_phb4_update_regions(PnvPhb4PecStack *stack)
     }
 
     /* Map ESB if enabled */
-    if (memory_region_is_mapped(&stack->intbar)) {
-        memory_region_add_subregion(&stack->intbar, 0, &phb->xsrc.esb_mmio);
+    if (memory_region_is_mapped(&phb->intbar)) {
+        memory_region_add_subregion(&phb->intbar, 0, &phb->xsrc.esb_mmio);
     }
 
     /* Check/update m32 */
@@ -924,9 +924,9 @@ static void pnv_pec_stk_update_map(PnvPhb4PecStack *stack)
         !(bar_en & PEC_NEST_STK_BAR_EN_PHB)) {
         memory_region_del_subregion(sysmem, &phb->phbbar);
     }
-    if (memory_region_is_mapped(&stack->intbar) &&
+    if (memory_region_is_mapped(&phb->intbar) &&
         !(bar_en & PEC_NEST_STK_BAR_EN_INT)) {
-        memory_region_del_subregion(sysmem, &stack->intbar);
+        memory_region_del_subregion(sysmem, &phb->intbar);
     }
 
     /* Update PHB */
@@ -966,14 +966,14 @@ static void pnv_pec_stk_update_map(PnvPhb4PecStack *stack)
         memory_region_init(&phb->phbbar, OBJECT(phb), name, size);
         memory_region_add_subregion(sysmem, bar, &phb->phbbar);
     }
-    if (!memory_region_is_mapped(&stack->intbar) &&
+    if (!memory_region_is_mapped(&phb->intbar) &&
         (bar_en & PEC_NEST_STK_BAR_EN_INT)) {
         bar = stack->nest_regs[PEC_NEST_STK_INT_BAR] >> 8;
         size = PNV_PHB4_MAX_INTs << 16;
-        snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-int",
+        snprintf(name, sizeof(name), "pec-%d.%d-phb-%d-int",
                  stack->pec->chip_id, stack->pec->index, stack->stack_no);
-        memory_region_init(&stack->intbar, OBJECT(stack), name, size);
-        memory_region_add_subregion(sysmem, bar, &stack->intbar);
+        memory_region_init(&phb->intbar, OBJECT(phb), name, size);
+        memory_region_add_subregion(sysmem, bar, &phb->intbar);
     }
 
     /* Update PHB */
diff --git a/include/hw/pci-host/pnv_phb4.h b/include/hw/pci-host/pnv_phb4.h
index b11fa80e81..cf5dd4009c 100644
--- a/include/hw/pci-host/pnv_phb4.h
+++ b/include/hw/pci-host/pnv_phb4.h
@@ -114,6 +114,7 @@ struct PnvPHB4 {
 
     /* Memory windows from PowerBus to PHB */
     MemoryRegion phbbar;
+    MemoryRegion intbar;
 
     /* On-chip IODA tables */
     uint64_t ioda_LIST[PNV_PHB4_MAX_LSIs];
@@ -169,7 +170,6 @@ struct PnvPhb4PecStack {
     /* Memory windows from PowerBus to PHB */
     MemoryRegion mmbar0;
     MemoryRegion mmbar1;
-    MemoryRegion intbar;
     uint64_t mmio0_base;
     uint64_t mmio0_size;
     uint64_t mmio1_base;