Changeset 65594 in vbox for trunk/src/VBox/Devices/PC/DevACPI.cpp

Timestamp:

Feb 2, 2017 5:19:11 PM (8 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

113262

Message:

ACPI: properly determine PciPref64 for bigger RAM sizes; that window will now always end at 16TB-1 and only MIN+LEN is calculated dynamically

File:

• trunk/src/VBox/Devices/PC/DevACPI.cpp (modified) (1 diff)

trunk/src/VBox/Devices/PC/DevACPI.cpp

@@ -3136 +3136 @@
     const uint64_t offRamHole = _4G - cbRamHole;
     if (pThis->fPciPref64Enabled)
-        pThis->u64PciPref64 = pThis->u64RamSize  < _4G ? _4G : RT_ALIGN_64(pThis->u64RamSize, _1G); /* MEM4 */
+    {
+        /* Activate MEM4 */
+        if (offRamHole >= pThis->u64RamSize)
+            pThis->u64PciPref64 = _4G;
+        else
+            pThis->u64PciPref64 = RT_ALIGN_64(pThis->u64RamSize + offRamHole, _1G);
+    }
     uint64_t cbRamLow = offRamHole < pThis->u64RamSize ? offRamHole : pThis->u64RamSize;
     if (cbRamLow > UINT32_C(0xffe00000)) /* See MEM3. */