diff --git a/src/dev/hsa/hsa_driver.cc b/src/dev/hsa/hsa_driver.cc
index a1215c4..3b27149 100644
--- a/src/dev/hsa/hsa_driver.cc
+++ b/src/dev/hsa/hsa_driver.cc
@@ -101,10 +101,9 @@
  * be mapped into that page.
  */
 void
-HSADriver::allocateQueue(PortProxy &mem_proxy, Addr ioc_buf)
+HSADriver::allocateQueue(ThreadContext *tc, Addr ioc_buf)
 {
-    TypedBufferArg<kfd_ioctl_create_queue_args> args(ioc_buf);
-    args.copyIn(mem_proxy);
+    VPtr<kfd_ioctl_create_queue_args> args(ioc_buf, tc);
 
     if (queueId >= 0x1000) {
         fatal("%s: Exceeded maximum number of HSA queues allowed\n", name());
@@ -115,5 +114,4 @@
     hsa_pp.setDeviceQueueDesc(args->read_pointer_address,
                               args->ring_base_address, args->queue_id,
                               args->ring_size);
-    args.copyOut(mem_proxy);
 }
diff --git a/src/dev/hsa/hsa_driver.hh b/src/dev/hsa/hsa_driver.hh
index abf79ab..19982f7 100644
--- a/src/dev/hsa/hsa_driver.hh
+++ b/src/dev/hsa/hsa_driver.hh
@@ -74,7 +74,7 @@
     HSADevice *device;
     uint32_t queueId;
 
-    void allocateQueue(PortProxy &mem_proxy, Addr ioc_buf);
+    void allocateQueue(ThreadContext *tc, Addr ioc_buf);
 };
 
 #endif // __DEV_HSA_HSA_DRIVER_HH__
diff --git a/src/gpu-compute/gpu_compute_driver.cc b/src/gpu-compute/gpu_compute_driver.cc
index 6bdb314..b4d65ce6 100644
--- a/src/gpu-compute/gpu_compute_driver.cc
+++ b/src/gpu-compute/gpu_compute_driver.cc
@@ -71,7 +71,7 @@
           {
             DPRINTF(GPUDriver, "ioctl: AMDKFD_IOC_CREATE_QUEUE\n");
 
-            allocateQueue(virt_proxy, ioc_buf);
+            allocateQueue(tc, ioc_buf);
 
             DPRINTF(GPUDriver, "Creating queue %d\n", queueId);
           }