Revert "src: use SVM mechanism to register userptr memory"

This reverts commit 178a619b80.
There are some openMP issues that were introduced after SVM userptr
feature was added.

Signed-off-by: Alex Sierra <Alex.Sierra@amd.com>
Change-Id: I7ef87c5232a3bcbe594c743fa4b4958601845ba5

tests/kfdtest/src/KFDMemoryTest.cpp

@@ -464,6 +464,7 @@ TEST_F(KFDMemoryTest, MemoryRegisterSamePtr) {
     EXPECT_SUCCESS(hsaKmtRegisterMemory((void *)&mem[0], sizeof(HSAuint32)));
     EXPECT_SUCCESS(hsaKmtMapMemoryToGPU((void *)&mem[0], sizeof(HSAuint32),
                                         &gpuva2));
+    EXPECT_TRUE(gpuva1 != gpuva2);
     EXPECT_SUCCESS(hsaKmtUnmapMemoryToGPU(reinterpret_cast<void *>(gpuva1)));
     EXPECT_SUCCESS(hsaKmtDeregisterMemory(reinterpret_cast<void *>(gpuva1)));
     EXPECT_SUCCESS(hsaKmtUnmapMemoryToGPU(reinterpret_cast<void *>(gpuva2)));
@@ -1133,12 +1134,7 @@ TEST_F(KFDMemoryTest, QueryPointerInfo) {
     static volatile HSAuint32 mem[4];  // 8 bytes for register only and
                                        // 8 bytes for register to nodes
     HsaMemoryBuffer hsaBuffer((void *)(&mem[0]), sizeof(HSAuint32)*2);
-    /*
-     * APU doesn't use userptr.
-     * User pointers registered with SVM API, does not create vm_object_t.
-     * Therefore, pointer info can not be queried.
-     */
-    if (is_dgpu() && mem != hsaBuffer.As<void*>()) {
+    if (is_dgpu()) {  // APU doesn't use userptr
         EXPECT_SUCCESS(hsaKmtQueryPointerInfo((void *)(&mem[0]), &ptrInfo));
         EXPECT_EQ(ptrInfo.Type, HSA_POINTER_REGISTERED_USER);
         EXPECT_EQ(ptrInfo.CPUAddress, &mem[0]);
@@ -1165,7 +1161,7 @@ TEST_F(KFDMemoryTest, QueryPointerInfo) {
     EXPECT_SUCCESS(hsaKmtQueryPointerInfo(reinterpret_cast<void *>(address), &ptrInfo));
     EXPECT_EQ(ptrInfo.Type, HSA_POINTER_ALLOCATED);
     EXPECT_EQ(ptrInfo.CPUAddress, hostBuffer.As<void*>());
-    if (is_dgpu() && &mem[1] != hsaBuffer.As<HSAuint32 *>() + 1) {
+    if (is_dgpu()) {
         EXPECT_SUCCESS(hsaKmtQueryPointerInfo((void *)(&mem[1]), &ptrInfo));
         EXPECT_EQ(ptrInfo.Type, HSA_POINTER_REGISTERED_USER);
         EXPECT_EQ(ptrInfo.CPUAddress, &mem[0]);