diff --git a/hw/intc/i8259.c b/hw/intc/i8259.c
index 17910f3bcb..bbae2d87f4 100644
--- a/hw/intc/i8259.c
+++ b/hw/intc/i8259.c
@@ -133,7 +133,7 @@ static void pic_set_irq(void *opaque, int irq, int level)
     }
 #endif
 
-    if (s->elcr & mask) {
+    if (s->ltim || (s->elcr & mask)) {
         /* level triggered */
         if (level) {
             s->irr |= mask;
@@ -167,7 +167,7 @@ static void pic_intack(PICCommonState *s, int irq)
         s->isr |= (1 << irq);
     }
     /* We don't clear a level sensitive interrupt here */
-    if (!(s->elcr & (1 << irq))) {
+    if (!s->ltim && !(s->elcr & (1 << irq))) {
         s->irr &= ~(1 << irq);
     }
     pic_update_irq(s);
@@ -224,6 +224,7 @@ static void pic_reset(DeviceState *dev)
     PICCommonState *s = PIC_COMMON(dev);
 
     s->elcr = 0;
+    s->ltim = 0;
     pic_init_reset(s);
 }
 
@@ -243,10 +244,7 @@ static void pic_ioport_write(void *opaque, hwaddr addr64,
             s->init_state = 1;
             s->init4 = val & 1;
             s->single_mode = val & 2;
-            if (val & 0x08) {
-                qemu_log_mask(LOG_UNIMP,
-                              "i8259: level sensitive irq not supported\n");
-            }
+            s->ltim = val & 8;
         } else if (val & 0x08) {
             if (val & 0x04) {
                 s->poll = 1;
diff --git a/hw/intc/i8259_common.c b/hw/intc/i8259_common.c
index af2e4a2241..c931dc2d07 100644
--- a/hw/intc/i8259_common.c
+++ b/hw/intc/i8259_common.c
@@ -51,7 +51,7 @@ void pic_reset_common(PICCommonState *s)
     s->special_fully_nested_mode = 0;
     s->init4 = 0;
     s->single_mode = 0;
-    /* Note: ELCR is not reset */
+    /* Note: ELCR and LTIM are not reset */
 }
 
 static int pic_dispatch_pre_save(void *opaque)
@@ -144,6 +144,24 @@ static void pic_print_info(InterruptStatsProvider *obj, Monitor *mon)
                    s->special_fully_nested_mode);
 }
 
+static bool ltim_state_needed(void *opaque)
+{
+    PICCommonState *s = PIC_COMMON(opaque);
+
+    return !!s->ltim;
+}
+
+static const VMStateDescription vmstate_pic_ltim = {
+    .name = "i8259/ltim",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = ltim_state_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT8(ltim, PICCommonState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 static const VMStateDescription vmstate_pic_common = {
     .name = "i8259",
     .version_id = 1,
@@ -168,6 +186,10 @@ static const VMStateDescription vmstate_pic_common = {
         VMSTATE_UINT8(single_mode, PICCommonState),
         VMSTATE_UINT8(elcr, PICCommonState),
         VMSTATE_END_OF_LIST()
+    },
+    .subsections = (const VMStateDescription*[]) {
+        &vmstate_pic_ltim,
+        NULL
     }
 };
 
diff --git a/include/hw/isa/i8259_internal.h b/include/hw/isa/i8259_internal.h
index 155b098452..f9dcc4163e 100644
--- a/include/hw/isa/i8259_internal.h
+++ b/include/hw/isa/i8259_internal.h
@@ -61,6 +61,7 @@ struct PICCommonState {
     uint8_t single_mode; /* true if slave pic is not initialized */
     uint8_t elcr; /* PIIX edge/trigger selection*/
     uint8_t elcr_mask;
+    uint8_t ltim; /* Edge/Level Bank Select (pre-PIIX, chip-wide) */
     qemu_irq int_out[1];
     uint32_t master; /* reflects /SP input pin */
     uint32_t iobase;