AUBDump: Move PPGGT entries to lower physical memory (starting BIT31)

- 1GB remaining for regular allocations in AubDump

Change-Id: I9dcc7a6f0c495ed95622cf6d5ec366af06bbf350

Author: HoppeMateusz

runtime/aub_mem_dump/aub_mem_dump.cpp

@@ -52,18 +52,18 @@ const uint64_t PageTableTraits<48>::physicalMemory = 0; // 1ull <<addressingBits
 
 const uint64_t PageTableTraits<48>::numPTEntries  = BIT(PageTableTraits<48>::addressingBits - PageTableTraits<48>::NUM_OFFSET_BITS);
 const uint64_t PageTableTraits<48>::sizePT        = BIT(PageTableTraits<48>::addressingBits - PageTableTraits<48>::NUM_OFFSET_BITS) * sizeof(uint64_t);
-const uint64_t PageTableTraits<48>::ptBaseAddress = BIT(37);
+const uint64_t PageTableTraits<48>::ptBaseAddress = BIT(34);
 
 const uint64_t PageTableTraits<48>::numPDEntries  = BIT(PageTableTraits<48>::addressingBits - PageTableTraits<48>::NUM_OFFSET_BITS - PageTableTraits<48>::NUM_PTE_BITS);
 const uint64_t PageTableTraits<48>::sizePD        = BIT(PageTableTraits<48>::addressingBits - PageTableTraits<48>::NUM_OFFSET_BITS - PageTableTraits<48>::NUM_PTE_BITS) * sizeof(uint64_t);
-const uint64_t PageTableTraits<48>::pdBaseAddress = BIT(36);
+const uint64_t PageTableTraits<48>::pdBaseAddress = BIT(33);
 
 const uint64_t PageTableTraits<48>::numPDPEntries  = BIT(PageTableTraits<48>::addressingBits - PageTableTraits<48>::NUM_OFFSET_BITS - PageTableTraits<48>::NUM_PTE_BITS - PageTableTraits<48>::NUM_PDE_BITS);
 const uint64_t PageTableTraits<48>::sizePDP        = BIT(PageTableTraits<48>::addressingBits - PageTableTraits<48>::NUM_OFFSET_BITS - PageTableTraits<48>::NUM_PTE_BITS - PageTableTraits<48>::NUM_PDE_BITS) * sizeof(uint64_t);
-const uint64_t PageTableTraits<48>::pdpBaseAddress = BIT(35);
+const uint64_t PageTableTraits<48>::pdpBaseAddress = BIT(32);
 const uint64_t PageTableTraits<48>::numPML4Entries  = BIT(NUM_PML4_BITS);
 const uint64_t PageTableTraits<48>::sizePML4        = BIT(NUM_PML4_BITS) * sizeof(uint64_t);
-const uint64_t PageTableTraits<48>::pml4BaseAddress = BIT(34);
+const uint64_t PageTableTraits<48>::pml4BaseAddress = BIT(31);
 // clang-format on
 
 void LrcaHelper::setRingTail(void *pLRCIn, uint32_t ringTail) const {

unit_tests/aub_tests/command_stream/aub_mem_dump_tests.cpp

@@ -38,6 +38,19 @@ std::string getAubFileName(const OCLRT::Device *pDevice, const std::string baseN
     return strfilename.str();
 }
 
+TEST(PageTableTraits, when48BitTraitsAreUsedThenPageTableAddressesAreCorrect) {
+    EXPECT_EQ(BIT(34), AubMemDump::PageTableTraits<48>::ptBaseAddress);
+    EXPECT_EQ(BIT(33), AubMemDump::PageTableTraits<48>::pdBaseAddress);
+    EXPECT_EQ(BIT(32), AubMemDump::PageTableTraits<48>::pdpBaseAddress);
+    EXPECT_EQ(BIT(31), AubMemDump::PageTableTraits<48>::pml4BaseAddress);
+}
+
+TEST(PageTableTraits, when32BitTraitsAreUsedThenPageTableAddressesAreCorrect) {
+    EXPECT_EQ(BIT(38), AubMemDump::PageTableTraits<32>::ptBaseAddress);
+    EXPECT_EQ(BIT(37), AubMemDump::PageTableTraits<32>::pdBaseAddress);
+    EXPECT_EQ(BIT(36), AubMemDump::PageTableTraits<32>::pdpBaseAddress);
+}
+
 typedef Test<DeviceFixture> AubMemDumpTests;
 
 HWTEST_F(AubMemDumpTests, givenAubFileStreamWhenOpenAndCloseIsCalledThenFileNameIsReportedCorrectly) {