diff --git a/projects/clr/rocclr/runtime/device/pal/palblit.cpp b/projects/clr/rocclr/runtime/device/pal/palblit.cpp
index 40030668df..c32a6aa687 100644
--- a/projects/clr/rocclr/runtime/device/pal/palblit.cpp
+++ b/projects/clr/rocclr/runtime/device/pal/palblit.cpp
@@ -298,7 +298,9 @@ bool DmaBlitManager::writeBuffer(const void* srcHost, device::Memory& dstMemory,
                                  const amd::Coord3D& origin, const amd::Coord3D& size,
                                  bool entire) const {
   // Use host copy if memory has direct access or it's persistent
-  if (setup_.disableWriteBuffer_ || gpuMem(dstMemory).isHostMemDirectAccess() ||
+  if (setup_.disableWriteBuffer_ ||
+      (gpuMem(dstMemory).isHostMemDirectAccess() &&
+      (gpuMem(dstMemory).memoryType() != Resource::ExternalPhysical)) ||
       gpuMem(dstMemory).isPersistentDirectMap()) {
     return HostBlitManager::writeBuffer(srcHost, dstMemory, origin, size, entire);
   } else {
@@ -384,7 +386,9 @@ bool DmaBlitManager::writeBufferRect(const void* srcHost, device::Memory& dstMem
                                      const amd::BufferRect& bufRect, const amd::Coord3D& size,
                                      bool entire) const {
   // Use host copy if memory has direct access or it's persistent
-  if (setup_.disableWriteBufferRect_ || dstMemory.isHostMemDirectAccess() ||
+  if (setup_.disableWriteBufferRect_ ||
+      (dstMemory.isHostMemDirectAccess() &&
+      (gpuMem(dstMemory).memoryType() != Resource::ExternalPhysical)) ||
       gpuMem(dstMemory).isPersistentDirectMap()) {
     return HostBlitManager::writeBufferRect(srcHost, dstMemory, hostRect, bufRect, size, entire);
   } else {
@@ -1926,7 +1930,9 @@ bool KernelBlitManager::writeBuffer(const void* srcHost, device::Memory& dstMemo
   bool result = false;
 
   // Use host copy if memory has direct access or it's persistent
-  if (setup_.disableWriteBuffer_ || gpuMem(dstMemory).isHostMemDirectAccess() ||
+  if (setup_.disableWriteBuffer_ ||
+      (gpuMem(dstMemory).isHostMemDirectAccess() &&
+      (gpuMem(dstMemory).memoryType() != Resource::ExternalPhysical)) ||
       (gpuMem(dstMemory).memoryType() == Resource::Persistent)) {
     result = HostBlitManager::writeBuffer(srcHost, dstMemory, origin, size, entire);
     synchronize();
@@ -1975,7 +1981,9 @@ bool KernelBlitManager::writeBufferRect(const void* srcHost, device::Memory& dst
   bool result = false;
 
   // Use host copy if memory has direct access or it's persistent
-  if (setup_.disableWriteBufferRect_ || gpuMem(dstMemory).isHostMemDirectAccess() ||
+  if (setup_.disableWriteBufferRect_ ||
+      (gpuMem(dstMemory).isHostMemDirectAccess() &&
+      (gpuMem(dstMemory).memoryType() != Resource::ExternalPhysical)) ||
       gpuMem(dstMemory).isPersistentDirectMap()) {
     result = HostBlitManager::writeBufferRect(srcHost, dstMemory, hostRect, bufRect, size, entire);
     synchronize();
diff --git a/projects/clr/rocclr/runtime/device/pal/palmemory.cpp b/projects/clr/rocclr/runtime/device/pal/palmemory.cpp
index 4777390de9..b498d5c9e3 100644
--- a/projects/clr/rocclr/runtime/device/pal/palmemory.cpp
+++ b/projects/clr/rocclr/runtime/device/pal/palmemory.cpp
@@ -127,6 +127,7 @@ bool Memory::create(Resource::MemoryType memType, Resource::CreateParams* params
   if (result) {
     switch (memoryType()) {
       case Resource::Pinned:
+      case Resource::ExternalPhysical:
         // Marks memory object for direct GPU access to the host memory
         flags_ |= HostMemoryDirectAccess;
         break;
diff --git a/projects/clr/rocclr/runtime/device/pal/palvirtual.cpp b/projects/clr/rocclr/runtime/device/pal/palvirtual.cpp
index dbfa84e012..bce0b937b9 100644
--- a/projects/clr/rocclr/runtime/device/pal/palvirtual.cpp
+++ b/projects/clr/rocclr/runtime/device/pal/palvirtual.cpp
@@ -2570,7 +2570,11 @@ void VirtualGPU::submitSignal(amd::SignalCommand& vcmd) {
     queues_[engineID_]->addCmdMemRef(pGpuMemory->memRef());
 
     queues_[engineID_]->iCmd()->
+#if (PAL_CLIENT_INTERFACE_MAJOR_VERSION < 396)
         CmdUpdateBusAddressableMemoryMarker(*(pGpuMemory->iMem()), value);
+#else
+        CmdUpdateBusAddressableMemoryMarker(*(pGpuMemory->iMem()), vcmd.markerOffset(), value);
+#endif
     eventEnd(engineID_, gpuEvent);
 
     // Restore the original engine