Return always true for P2P validation under ROCr

Change-Id: Id32a5a94a642e708d1d042c5247af38501bec153


[ROCm/clr commit: 059832b526]

projects/clr/rocclr/device/device.hpp

@@ -581,7 +581,8 @@ class Settings : public amd::HeapObject {
       uint enableCoopGroups_ : 1;     //!< Enable cooperative groups feature
       uint enableCoopMultiDeviceGroups_ : 1; //!< Enable cooperative groups multi device
       uint fenceScopeAgent_ : 1;      //!< Enable fence scope agent in AQL dispatch packet
-      uint reserved_ : 11;
+      uint rocr_backend_ : 1;         //!< Device uses ROCr backend for submissions
+      uint reserved_ : 10;
     };
     uint value_;
   };

projects/clr/rocclr/device/rocm/rocsettings.cpp

@@ -89,6 +89,8 @@ Settings::Settings() {
 
   hmmFlags_ = (!flagIsDefault(ROC_HMM_FLAGS)) ? ROC_HMM_FLAGS :
       Hmm::EnableSystemMemory | Hmm::EnableMallocPrefetch;
+
+  rocr_backend_ = true;
 }
 
 bool Settings::create(bool fullProfile, int gfxipMajor, int gfxipMinor, bool coop_groups) {

projects/clr/rocclr/platform/command.cpp

@@ -590,6 +590,13 @@ bool TransferBufferFileCommand::validateMemory() {
 }
 
 bool CopyMemoryP2PCommand::validateMemory() {
+  amd::Device* queue_device = &queue()->device();
+  // Rocr backend maps memory from different devices by default and runtime doesn't need to track
+  // extra memory objects. Also P2P staging buffer always allocated
+  if (queue_device->settings().rocr_backend_) {
+    return true;
+  }
+
   const std::vector<Device*>& devices = memory1_->getContext().devices();
   if (devices.size() != 1) {
     LogError("Can't allocate memory object for P2P extension");
@@ -614,11 +621,7 @@ bool CopyMemoryP2PCommand::validateMemory() {
   // Validate P2P memories on the current device, if any of them is null, then it's p2p staging
   if ((nullptr == memory1_->getDeviceMemory(queue()->device())) ||
       (nullptr == memory2_->getDeviceMemory(queue()->device()))) {
-    // HIP doesn't support emulation
-    p2pStaging = !amd::IS_HIP;
-    if (!p2pStaging) {
-      return false;
-    }
+    p2pStaging = true;
   }
 
   if (devices[0]->P2PStage() != nullptr && p2pStaging) {