diff --git a/drivers/accel/habanalabs/common/command_submission.c b/drivers/accel/habanalabs/common/command_submission.c
index 24f3d82ee4cb..6c4d9b1aa5de 100644
--- a/drivers/accel/habanalabs/common/command_submission.c
+++ b/drivers/accel/habanalabs/common/command_submission.c
@@ -1082,9 +1082,8 @@ static void
 wake_pending_user_interrupt_threads(struct hl_user_interrupt *interrupt)
 {
 	struct hl_user_pending_interrupt *pend, *temp;
-	unsigned long flags;
 
-	spin_lock_irqsave(&interrupt->wait_list_lock, flags);
+	spin_lock(&interrupt->wait_list_lock);
 	list_for_each_entry_safe(pend, temp, &interrupt->wait_list_head, wait_list_node) {
 		if (pend->ts_reg_info.buf) {
 			list_del(&pend->wait_list_node);
@@ -1095,7 +1094,7 @@ wake_pending_user_interrupt_threads(struct hl_user_interrupt *interrupt)
 			complete_all(&pend->fence.completion);
 		}
 	}
-	spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+	spin_unlock(&interrupt->wait_list_lock);
 }
 
 void hl_release_pending_user_interrupts(struct hl_device *hdev)
@@ -3159,7 +3158,7 @@ static int ts_buff_get_kernel_ts_record(struct hl_mmap_mem_buf *buf,
 	struct hl_user_pending_interrupt *cb_last =
 			(struct hl_user_pending_interrupt *)ts_buff->kernel_buff_address +
 			(ts_buff->kernel_buff_size / sizeof(struct hl_user_pending_interrupt));
-	unsigned long flags, iter_counter = 0;
+	unsigned long iter_counter = 0;
 	u64 current_cq_counter;
 	ktime_t timestamp;
 
@@ -3173,7 +3172,7 @@ static int ts_buff_get_kernel_ts_record(struct hl_mmap_mem_buf *buf,
 	timestamp = ktime_get();
 
 start_over:
-	spin_lock_irqsave(wait_list_lock, flags);
+	spin_lock(wait_list_lock);
 
 	/* Unregister only if we didn't reach the target value
 	 * since in this case there will be no handling in irq context
@@ -3184,7 +3183,7 @@ static int ts_buff_get_kernel_ts_record(struct hl_mmap_mem_buf *buf,
 		current_cq_counter = *requested_offset_record->cq_kernel_addr;
 		if (current_cq_counter < requested_offset_record->cq_target_value) {
 			list_del(&requested_offset_record->wait_list_node);
-			spin_unlock_irqrestore(wait_list_lock, flags);
+			spin_unlock(wait_list_lock);
 
 			hl_mmap_mem_buf_put(requested_offset_record->ts_reg_info.buf);
 			hl_cb_put(requested_offset_record->ts_reg_info.cq_cb);
@@ -3195,8 +3194,8 @@ static int ts_buff_get_kernel_ts_record(struct hl_mmap_mem_buf *buf,
 			dev_dbg(buf->mmg->dev,
 				"ts node in middle of irq handling\n");
 
-			/* irq handling in the middle give it time to finish */
-			spin_unlock_irqrestore(wait_list_lock, flags);
+			/* irq thread handling in the middle give it time to finish */
+			spin_unlock(wait_list_lock);
 			usleep_range(100, 1000);
 			if (++iter_counter == MAX_TS_ITER_NUM) {
 				dev_err(buf->mmg->dev,
@@ -3217,7 +3216,7 @@ static int ts_buff_get_kernel_ts_record(struct hl_mmap_mem_buf *buf,
 				(u64 *) cq_cb->kernel_address + cq_offset;
 		requested_offset_record->cq_target_value = target_value;
 
-		spin_unlock_irqrestore(wait_list_lock, flags);
+		spin_unlock(wait_list_lock);
 	}
 
 	*pend = requested_offset_record;
@@ -3237,7 +3236,7 @@ static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx,
 	struct hl_user_pending_interrupt *pend;
 	struct hl_mmap_mem_buf *buf;
 	struct hl_cb *cq_cb;
-	unsigned long timeout, flags;
+	unsigned long timeout;
 	long completion_rc;
 	int rc = 0;
 
@@ -3284,7 +3283,7 @@ static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx,
 		pend->cq_target_value = target_value;
 	}
 
-	spin_lock_irqsave(&interrupt->wait_list_lock, flags);
+	spin_lock(&interrupt->wait_list_lock);
 
 	/* We check for completion value as interrupt could have been received
 	 * before we added the node to the wait list
@@ -3292,7 +3291,7 @@ static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx,
 	if (*pend->cq_kernel_addr >= target_value) {
 		if (register_ts_record)
 			pend->ts_reg_info.in_use = 0;
-		spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+		spin_unlock(&interrupt->wait_list_lock);
 
 		*status = HL_WAIT_CS_STATUS_COMPLETED;
 
@@ -3304,7 +3303,7 @@ static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx,
 			goto set_timestamp;
 		}
 	} else if (!timeout_us) {
-		spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+		spin_unlock(&interrupt->wait_list_lock);
 		*status = HL_WAIT_CS_STATUS_BUSY;
 		pend->fence.timestamp = ktime_get();
 		goto set_timestamp;
@@ -3329,7 +3328,7 @@ static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx,
 		pend->ts_reg_info.in_use = 1;
 
 	list_add_tail(&pend->wait_list_node, &interrupt->wait_list_head);
-	spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+	spin_unlock(&interrupt->wait_list_lock);
 
 	if (register_ts_record) {
 		rc = *status = HL_WAIT_CS_STATUS_COMPLETED;
@@ -3373,9 +3372,9 @@ static int _hl_interrupt_wait_ioctl(struct hl_device *hdev, struct hl_ctx *ctx,
 	 * for ts record, the node will be deleted in the irq handler after
 	 * we reach the target value.
 	 */
-	spin_lock_irqsave(&interrupt->wait_list_lock, flags);
+	spin_lock(&interrupt->wait_list_lock);
 	list_del(&pend->wait_list_node);
-	spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+	spin_unlock(&interrupt->wait_list_lock);
 
 set_timestamp:
 	*timestamp = ktime_to_ns(pend->fence.timestamp);
@@ -3403,7 +3402,7 @@ static int _hl_interrupt_wait_ioctl_user_addr(struct hl_device *hdev, struct hl_
 				u64 *timestamp)
 {
 	struct hl_user_pending_interrupt *pend;
-	unsigned long timeout, flags;
+	unsigned long timeout;
 	u64 completion_value;
 	long completion_rc;
 	int rc = 0;
@@ -3423,9 +3422,9 @@ static int _hl_interrupt_wait_ioctl_user_addr(struct hl_device *hdev, struct hl_
 	/* Add pending user interrupt to relevant list for the interrupt
 	 * handler to monitor
 	 */
-	spin_lock_irqsave(&interrupt->wait_list_lock, flags);
+	spin_lock(&interrupt->wait_list_lock);
 	list_add_tail(&pend->wait_list_node, &interrupt->wait_list_head);
-	spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+	spin_unlock(&interrupt->wait_list_lock);
 
 	/* We check for completion value as interrupt could have been received
 	 * before we added the node to the wait list
@@ -3456,14 +3455,14 @@ static int _hl_interrupt_wait_ioctl_user_addr(struct hl_device *hdev, struct hl_
 	 * If comparison fails, keep waiting until timeout expires
 	 */
 	if (completion_rc > 0) {
-		spin_lock_irqsave(&interrupt->wait_list_lock, flags);
+		spin_lock(&interrupt->wait_list_lock);
 		/* reinit_completion must be called before we check for user
 		 * completion value, otherwise, if interrupt is received after
 		 * the comparison and before the next wait_for_completion,
 		 * we will reach timeout and fail
 		 */
 		reinit_completion(&pend->fence.completion);
-		spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+		spin_unlock(&interrupt->wait_list_lock);
 
 		if (copy_from_user(&completion_value, u64_to_user_ptr(user_address), 8)) {
 			dev_err(hdev->dev, "Failed to copy completion value from user\n");
@@ -3500,9 +3499,9 @@ static int _hl_interrupt_wait_ioctl_user_addr(struct hl_device *hdev, struct hl_
 	}
 
 remove_pending_user_interrupt:
-	spin_lock_irqsave(&interrupt->wait_list_lock, flags);
+	spin_lock(&interrupt->wait_list_lock);
 	list_del(&pend->wait_list_node);
-	spin_unlock_irqrestore(&interrupt->wait_list_lock, flags);
+	spin_unlock(&interrupt->wait_list_lock);
 
 	*timestamp = ktime_to_ns(pend->fence.timestamp);
 
diff --git a/drivers/accel/habanalabs/common/habanalabs.h b/drivers/accel/habanalabs/common/habanalabs.h
index bf81eda88e2e..5624ea19ec0b 100644
--- a/drivers/accel/habanalabs/common/habanalabs.h
+++ b/drivers/accel/habanalabs/common/habanalabs.h
@@ -3650,6 +3650,7 @@ irqreturn_t hl_irq_handler_eq(int irq, void *arg);
 irqreturn_t hl_irq_handler_dec_abnrm(int irq, void *arg);
 irqreturn_t hl_irq_handler_user_interrupt(int irq, void *arg);
 irqreturn_t hl_irq_handler_default(int irq, void *arg);
+irqreturn_t hl_irq_user_interrupt_thread_handler(int irq, void *arg);
 u32 hl_cq_inc_ptr(u32 ptr);
 
 int hl_asid_init(struct hl_device *hdev);
diff --git a/drivers/accel/habanalabs/common/irq.c b/drivers/accel/habanalabs/common/irq.c
index 04844e843a7b..c61c9a294ab8 100644
--- a/drivers/accel/habanalabs/common/irq.c
+++ b/drivers/accel/habanalabs/common/irq.c
@@ -334,6 +334,19 @@ static void handle_user_interrupt(struct hl_device *hdev, struct hl_user_interru
  *
  */
 irqreturn_t hl_irq_handler_user_interrupt(int irq, void *arg)
+{
+	return IRQ_WAKE_THREAD;
+}
+
+/**
+ * hl_irq_user_interrupt_thread_handler - irq thread handler for user interrupts.
+ * This function is invoked by threaded irq mechanism
+ *
+ * @irq: irq number
+ * @arg: pointer to user interrupt structure
+ *
+ */
+irqreturn_t hl_irq_user_interrupt_thread_handler(int irq, void *arg)
 {
 	struct hl_user_interrupt *user_int = arg;
 	struct hl_device *hdev = user_int->hdev;
diff --git a/drivers/accel/habanalabs/gaudi2/gaudi2.c b/drivers/accel/habanalabs/gaudi2/gaudi2.c
index 8e3cb761219f..a3e01e287f9d 100644
--- a/drivers/accel/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/accel/habanalabs/gaudi2/gaudi2.c
@@ -3923,7 +3923,6 @@ static void gaudi2_dec_disable_msix(struct hl_device *hdev, u32 max_irq_num)
 static int gaudi2_dec_enable_msix(struct hl_device *hdev)
 {
 	int rc, i, irq_init_cnt, irq, relative_idx;
-	irq_handler_t irq_handler;
 	struct hl_dec *dec;
 
 	for (i = GAUDI2_IRQ_NUM_DCORE0_DEC0_NRM, irq_init_cnt = 0;
@@ -3933,20 +3932,24 @@ static int gaudi2_dec_enable_msix(struct hl_device *hdev)
 		irq = pci_irq_vector(hdev->pdev, i);
 		relative_idx = i - GAUDI2_IRQ_NUM_DCORE0_DEC0_NRM;
 
-		irq_handler = (relative_idx % 2) ?
-				hl_irq_handler_dec_abnrm :
-				hl_irq_handler_user_interrupt;
-
-		dec = hdev->dec + relative_idx / 2;
-
 		/* We pass different structures depending on the irq handler. For the abnormal
 		 * interrupt we pass hl_dec and for the regular interrupt we pass the relevant
 		 * user_interrupt entry
+		 *
+		 * TODO: change the dec abnrm to threaded irq
 		 */
-		rc = request_irq(irq, irq_handler, 0, gaudi2_irq_name(i),
-				((relative_idx % 2) ?
-				(void *) dec :
-				(void *) &hdev->user_interrupt[dec->core_id]));
+
+		dec = hdev->dec + relative_idx / 2;
+		if (relative_idx % 2) {
+			rc = request_irq(irq, hl_irq_handler_dec_abnrm, 0,
+						gaudi2_irq_name(i), (void *) dec);
+		} else {
+			rc = request_threaded_irq(irq, hl_irq_handler_user_interrupt,
+					hl_irq_user_interrupt_thread_handler, IRQF_ONESHOT,
+					gaudi2_irq_name(i),
+					(void *) &hdev->user_interrupt[dec->core_id]);
+		}
+
 		if (rc) {
 			dev_err(hdev->dev, "Failed to request IRQ %d", irq);
 			goto free_dec_irqs;
@@ -4008,7 +4011,9 @@ static int gaudi2_enable_msix(struct hl_device *hdev)
 		irq = pci_irq_vector(hdev->pdev, i);
 		irq_handler = hl_irq_handler_user_interrupt;
 
-		rc = request_irq(irq, irq_handler, 0, gaudi2_irq_name(i), &hdev->user_interrupt[j]);
+		rc = request_threaded_irq(irq, irq_handler, hl_irq_user_interrupt_thread_handler,
+				IRQF_ONESHOT, gaudi2_irq_name(i), &hdev->user_interrupt[j]);
+
 		if (rc) {
 			dev_err(hdev->dev, "Failed to request IRQ %d", irq);
 			goto free_user_irq;
