kfdtest: Ensure devices are peer-accessible for peer mapping

If the devices aren't peer-accessible, we shouldn't try to run a test
that requires that the devices be peer-accessible. Thus, add a check in
MapVramToGPUNodesTest to check for peer accessibility before executing
the peer mappings.

Signed-off-by: Kent Russell <kent.russell@amd.com>
Change-Id: Ib79b141f8c1ac6d85f5ab49d62af62ec10b988b7

tests/kfdtest/src/KFDLocalMemoryTest.cpp

@@ -516,6 +516,11 @@ TEST_F(KFDLocalMemoryTest, MapVramToGPUNodesTest) {
         }
     }
 
+    if (!m_NodeInfo.IsPeerAccessibleByNode(dst_node, src_node)) {
+        LOG() << "Skipping test: GPUs are not peer-accessible" << std::endl;
+        return;
+    }
+
     LOG() << "Testing from GPU " << src_node << " to GPU " << dst_node << std::endl;
 
     void *shared_addr;