diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
index 5e275f8dda8c..b2d5b1747086 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.c
+++ b/drivers/gpu/drm/i915/gt/intel_rps.c
@@ -936,8 +936,23 @@ void intel_rps_park(struct intel_rps *rps)
 	GT_TRACE(rps_to_gt(rps), "park:%x\n", rps->cur_freq);
 }
 
+void intel_rps_dec_waiters(struct intel_rps *rps)
+{
+	struct intel_guc_slpc *slpc;
+
+	if (rps_uses_slpc(rps)) {
+		slpc = rps_to_slpc(rps);
+
+		intel_guc_slpc_dec_waiters(slpc);
+	} else {
+		atomic_dec(&rps->num_waiters);
+	}
+}
+
 void intel_rps_boost(struct i915_request *rq)
 {
+	struct intel_guc_slpc *slpc;
+
 	if (i915_request_signaled(rq) || i915_request_has_waitboost(rq))
 		return;
 
@@ -945,6 +960,17 @@ void intel_rps_boost(struct i915_request *rq)
 	if (!test_and_set_bit(I915_FENCE_FLAG_BOOST, &rq->fence.flags)) {
 		struct intel_rps *rps = &READ_ONCE(rq->engine)->gt->rps;
 
+		if (rps_uses_slpc(rps)) {
+			slpc = rps_to_slpc(rps);
+
+			/* Return if old value is non zero */
+			if (atomic_fetch_inc(&slpc->num_waiters))
+				return;
+
+			if (intel_rps_get_requested_frequency(rps) < slpc->boost_freq)
+				schedule_work(&slpc->boost_work);
+		}
+
 		if (atomic_fetch_inc(&rps->num_waiters))
 			return;
 
diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
index 11960d64ca82..407e878d5006 100644
--- a/drivers/gpu/drm/i915/gt/intel_rps.h
+++ b/drivers/gpu/drm/i915/gt/intel_rps.h
@@ -23,6 +23,7 @@ void intel_rps_disable(struct intel_rps *rps);
 void intel_rps_park(struct intel_rps *rps);
 void intel_rps_unpark(struct intel_rps *rps);
 void intel_rps_boost(struct i915_request *rq);
+void intel_rps_dec_waiters(struct intel_rps *rps);
 
 int intel_rps_set(struct intel_rps *rps, u8 val);
 void intel_rps_mark_interactive(struct intel_rps *rps, bool interactive);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
index cc51987b2535..65da454b6693 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
@@ -445,7 +445,11 @@ int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val)
 	    val > slpc->max_freq_softlimit)
 		return -EINVAL;
 
+	/* Need a lock now since waitboost can be modifying min as well */
+	mutex_lock(&slpc->lock);
+
 	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+
 		ret = slpc_set_param(slpc,
 				     SLPC_PARAM_GLOBAL_MIN_GT_UNSLICE_FREQ_MHZ,
 				     val);
@@ -458,6 +462,8 @@ int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val)
 	if (!ret)
 		slpc->min_freq_softlimit = val;
 
+	mutex_unlock(&slpc->lock);
+
 	return ret;
 }
 
@@ -643,6 +649,19 @@ int intel_guc_slpc_enable(struct intel_guc_slpc *slpc)
 	return 0;
 }
 
+void intel_guc_slpc_dec_waiters(struct intel_guc_slpc *slpc)
+{
+	/* Return min back to the softlimit.
+	 * This is called during request retire,
+	 * so we don't need to fail that if the
+	 * set_param fails.
+	 */
+	mutex_lock(&slpc->lock);
+	if (atomic_dec_and_test(&slpc->num_waiters))
+		slpc_force_min_freq(slpc, slpc->min_freq_softlimit);
+	mutex_unlock(&slpc->lock);
+}
+
 int intel_guc_slpc_print_info(struct intel_guc_slpc *slpc, struct drm_printer *p)
 {
 	struct drm_i915_private *i915 = slpc_to_i915(slpc);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
index b62528647770..d74d6d749bdc 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
@@ -39,5 +39,6 @@ int intel_guc_slpc_get_min_freq(struct intel_guc_slpc *slpc, u32 *val);
 int intel_guc_slpc_print_info(struct intel_guc_slpc *slpc, struct drm_printer *p);
 void intel_guc_pm_intrmsk_enable(struct intel_gt *gt);
 void intel_guc_slpc_boost(struct intel_guc_slpc *slpc);
+void intel_guc_slpc_dec_waiters(struct intel_guc_slpc *slpc);
 
 #endif
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
index 2c3cd6e635b5..08f38e86231d 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -339,7 +339,7 @@ bool i915_request_retire(struct i915_request *rq)
 	}
 
 	if (test_and_set_bit(I915_FENCE_FLAG_BOOST, &rq->fence.flags))
-		atomic_dec(&rq->engine->gt->rps.num_waiters);
+		intel_rps_dec_waiters(&rq->engine->gt->rps);
 
 	/*
 	 * We only loosely track inflight requests across preemption,
